paper_id
string
title
string
paper_url
string
pdf_url
string
authors
list
abstract
large_string
track
string
primary_area
string
doi
string
volume
string
issue
string
pages
string
abstract_source
string
arxiv_id
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arxiv_id_source
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10.1609/aaai.v35i7.16807
On Exploiting Hitting Sets for Model Reconciliation
https://ojs.aaai.org/index.php/AAAI/article/view/16807
https://ojs.aaai.org/index.php/AAAI/article/download/16807/16614
[ "Stylianos Loukas Vasileiou", "Alessandro Previti", "William Yeoh" ]
In human-aware planning, a planning agent may need to provide an explanation to a human user on why its plan is optimal. A popular approach to do this is called model reconciliation, where the agent tries to reconcile the differences in its model and the human's model such that the plan is also optimal in the human's m...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16807
35
7
6514-6521
official
2012.09274
title_snapshot
10.1609/aaai.v35i7.16806
On the Tractability of SHAP Explanations
https://ojs.aaai.org/index.php/AAAI/article/view/16806
https://ojs.aaai.org/index.php/AAAI/article/download/16806/16613
[ "Guy Van den Broeck", "Anton Lykov", "Maximilian Schleich", "Dan Suciu" ]
SHAP explanations are a popular feature-attribution mechanism for explainable AI. They use game-theoretic notions to measure the influence of individual features on the prediction of a machine learning model. Despite a lot of recent interest from both academia and industry, it is not known whether SHAP explanations of ...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16806
35
7
6505-6513
official
2009.08634
title_snapshot
10.1609/aaai.v35i7.16805
Strong Explanations in Abstract Argumentation
https://ojs.aaai.org/index.php/AAAI/article/view/16805
https://ojs.aaai.org/index.php/AAAI/article/download/16805/16612
[ "Markus Ulbricht", "Johannes P. Wallner" ]
argumentation constitutes both a major research strand and a key approach that provides the core reasoning engine for a multitude of formalisms in computational argumentation in AI. Reasoning in abstract argumentation is carried out by viewing arguments and their relationships as abstract entities, with argumentation f...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16805
35
7
6496-6504
official
null
null
10.1609/aaai.v35i7.16804
Stratified Negation in Datalog with Metric Temporal Operators
https://ojs.aaai.org/index.php/AAAI/article/view/16804
https://ojs.aaai.org/index.php/AAAI/article/download/16804/16611
[ "David J Tena Cucala", "Przemysław A Wałęga", "Bernardo Cuenca Grau", "Egor Kostylev" ]
We extend DatalogMTL—Datalog with operators from metric temporal logic—by adding stratified negation as failure. The new language provides additional expressive power for representing and reasoning about temporal data and knowledge in a wide range of applications. We consider models over the rational timeline, study th...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16804
35
7
6488-6495
official
null
null
10.1609/aaai.v35i7.16803
Quantification of Resource Production Incompleteness
https://ojs.aaai.org/index.php/AAAI/article/view/16803
https://ojs.aaai.org/index.php/AAAI/article/download/16803/16610
[ "Yakoub Salhi" ]
In a situation where an agent has to produce specific resources using the available ones, it may not be possible to achieve the complete goal, but only obtaining some of its parts.This incompleteness problem calls for reasoning models to make rational decisions. In this paper, we introduce a logic-based framework for m...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16803
35
7
6480-6487
official
null
null
10.1609/aaai.v35i7.16790
Mining EL Bases with Adaptable Role Depth
https://ojs.aaai.org/index.php/AAAI/article/view/16790
https://ojs.aaai.org/index.php/AAAI/article/download/16790/16597
[ "Ricardo Guimarães", "Ana Ozaki", "Cosimo Persia", "Baris Sertkaya" ]
In Formal Concept Analysis, a base for a finite structure is a set of implications that characterizes all valid implications of the structure. This notion can be adapted to the context of Description Logic, where the base consists of a set of concept inclusions instead of implications. In this setting, concept expressi...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16790
35
7
6367-6374
official
2102.10689
title_snapshot
10.1609/aaai.v35i7.16789
Constraint Logic Programming for Real-World Test Laboratory Scheduling
https://ojs.aaai.org/index.php/AAAI/article/view/16789
https://ojs.aaai.org/index.php/AAAI/article/download/16789/16596
[ "Tobias Geibinger", "Florian Mischek", "Nysret Musliu" ]
The Test Laboratory Scheduling Problem (TLSP) and its subproblem TLSP-S are real-world industrial scheduling problems that are extensions of the Resource-Constrained Project Scheduling Problem (RCPSP). Besides several additional constraints, TLSP includes a grouping phase where the jobs to be scheduled have to be assem...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16789
35
7
6358-6366
official
null
null
10.1609/aaai.v35i7.16791
REM-Net: Recursive Erasure Memory Network for Commonsense Evidence Refinement
https://ojs.aaai.org/index.php/AAAI/article/view/16791
https://ojs.aaai.org/index.php/AAAI/article/download/16791/16598
[ "Yinya Huang", "Meng Fang", "Xunlin Zhan", "Qingxing Cao", "Xiaodan Liang" ]
When answering a question, people often draw upon their rich world knowledge in addition to the particular context. While recent works retrieve supporting facts/evidence from commonsense knowledge bases to supply additional information to each question, there is still ample opportunity to advance it on the quality of t...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16791
35
7
6375-6383
official
2012.13185
title_snapshot
10.1609/aaai.v35i7.16792
(Comet-) Atomic 2020: On Symbolic and Neural Commonsense Knowledge Graphs
https://ojs.aaai.org/index.php/AAAI/article/view/16792
https://ojs.aaai.org/index.php/AAAI/article/download/16792/16599
[ "Jena D. Hwang", "Chandra Bhagavatula", "Ronan Le Bras", "Jeff Da", "Keisuke Sakaguchi", "Antoine Bosselut", "Yejin Choi" ]
Recent years have brought about a renewed interest in commonsense representation and reasoning in the field of natural language understanding. The development of new commonsense knowledge graphs (CSKG) has been central to these advances as their diverse facts can be used and referenced by machine learning models for ta...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16792
35
7
6384-6392
official
2010.05953
title_snapshot
10.1609/aaai.v35i7.16793
Commonsense Knowledge Augmentation for Low-Resource Languages via Adversarial Learning
https://ojs.aaai.org/index.php/AAAI/article/view/16793
https://ojs.aaai.org/index.php/AAAI/article/download/16793/16600
[ "Bosung Kim", "Juae Kim", "Youngjoong Ko", "Jungyun Seo" ]
Commonsense reasoning is one of the ultimate goals of artificial intelligence research because it simulates the human thinking process. However, most commonsense reasoning studies have focused on English because available commonsense knowledge for low-resource languages is scarce due to high construction costs. Transla...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16793
35
7
6393-6401
official
null
null
10.1609/aaai.v35i7.16794
Parameterized Logical Theories
https://ojs.aaai.org/index.php/AAAI/article/view/16794
https://ojs.aaai.org/index.php/AAAI/article/download/16794/16601
[ "Fangzhen Lin" ]
A theory in first-order logic is a set of sentences. A parameterized theory is a first-order theory with some of its predicates and functions identified as parameters, together with some import statements that call other parameterized theories. A KB is then a collection of these interconnected parameterised theories, s...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16794
35
7
6402-6409
official
null
null
10.1609/aaai.v35i7.16795
Learning Term Embeddings for Lexical Taxonomies
https://ojs.aaai.org/index.php/AAAI/article/view/16795
https://ojs.aaai.org/index.php/AAAI/article/download/16795/16602
[ "Jingping Liu", "Menghui Wang", "Chao Wang", "Jiaqing Liang", "Lihan Chen", "Haiyun Jiang", "Yanghua Xiao", "Yunwen Chen" ]
Lexical taxonomies, a special kind of knowledge graph, are essential for natural language understanding. This paper studies the problem of lexical taxonomy embedding. Most existing graph embedding methods are difficult to apply to lexical taxonomies since 1) they ignore implicit but important information, namely, sibli...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16795
35
7
6410-6417
official
null
null
10.1609/aaai.v35i7.16796
KG-BART: Knowledge Graph-Augmented BART for Generative Commonsense Reasoning
https://ojs.aaai.org/index.php/AAAI/article/view/16796
https://ojs.aaai.org/index.php/AAAI/article/download/16796/16603
[ "Ye Liu", "Yao Wan", "Lifang He", "Hao Peng", "Philip S. Yu" ]
Generative commonsense reasoning which aims to empower machines to generate sentences with the capacity of reasoning over a set of concepts is a critical bottleneck for text generation. Even the state-of-the-art pre-trained language generation models struggle at this task and often produce implausible and anomalous sen...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16796
35
7
6418-6425
official
2009.12677
title_snapshot
10.1609/aaai.v35i7.16797
Parameterized Complexity of Logic-Based Argumentation in Schaefer's Framework
https://ojs.aaai.org/index.php/AAAI/article/view/16797
https://ojs.aaai.org/index.php/AAAI/article/download/16797/16604
[ "Yasir Mahmood", "Arne Meier", "Johannes Schmidt" ]
Logic-based argumentation is a well-established formalism modeling nonmonotonic reasoning. It has been playing a major role in AI for decades, now. Informally, a set of formulas is the support for a given claim if it is consistent, subset-minimal, and implies the claim. In such a case, the pair of the support and the c...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16797
35
7
6426-6434
official
2102.11782
title_snapshot
10.1609/aaai.v35i7.16798
Ranking Sets of Defeasible Elements in Preferential Approaches to Structured Argumentation: Postulates, Relations, and Characterizations
https://ojs.aaai.org/index.php/AAAI/article/view/16798
https://ojs.aaai.org/index.php/AAAI/article/download/16798/16605
[ "Jan Maly", "Johannes P. Wallner" ]
Preferences play a key role in computational argumentation in AI, as they reflect various notions of argument strength vital for the representation of argumentation. Within central formal approaches to structured argumentation, preferential approaches are applied by lifting preferences over defeasible elements to ranki...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16798
35
7
6435-6443
official
null
null
10.1609/aaai.v35i7.16799
GENSYNTH: Synthesizing Datalog Programs without Language Bias
https://ojs.aaai.org/index.php/AAAI/article/view/16799
https://ojs.aaai.org/index.php/AAAI/article/download/16799/16606
[ "Jonathan Mendelson", "Aaditya Naik", "Mukund Raghothaman", "Mayur Naik" ]
Techniques for learning logic programs from data typically rely on language bias mechanisms to restrict the hypothesis space. These methods are therefore limited by the user's ability to tune them such that the hypothesis space is simultaneously large enough to include the target program but small enough to admit a tra...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16799
35
7
6444-6453
official
null
null
10.1609/aaai.v35i7.16800
Parameterized Complexity of Small Decision Tree Learning
https://ojs.aaai.org/index.php/AAAI/article/view/16800
https://ojs.aaai.org/index.php/AAAI/article/download/16800/16607
[ "Sebastian Ordyniak", "Stefan Szeider" ]
We study the NP-hard problem of learning a decision tree (DT) of smallest depth or size from data. We provide the first parameterized complexity analysis of the problem and draw a detailed parameterized complexity map for the natural parameters: size or depth of the DT, maximum domain size of all features, and the maxi...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16800
35
7
6454-6462
official
null
null
10.1609/aaai.v35i7.16801
Interpreting Neural Networks as Quantitative Argumentation Frameworks
https://ojs.aaai.org/index.php/AAAI/article/view/16801
https://ojs.aaai.org/index.php/AAAI/article/download/16801/16608
[ "Nico Potyka" ]
We show that an interesting class of feed-forward neural networks can be understood as quantitative argumentation frameworks. This connection creates a bridge between research in Formal Argumentation and Machine Learning. We generalize the semantics of feed-forward neural networks to acyclic graphs and study the result...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16801
35
7
6463-6470
official
null
null
10.1609/aaai.v35i7.16802
ChronoR: Rotation Based Temporal Knowledge Graph Embedding
https://ojs.aaai.org/index.php/AAAI/article/view/16802
https://ojs.aaai.org/index.php/AAAI/article/download/16802/16609
[ "Ali Sadeghian", "Mohammadreza Armandpour", "Anthony Colas", "Daisy Zhe Wang" ]
Despite the importance and abundance of temporal knowledge graphs, most of the current research has been focused on reasoning on static graphs. In this paper, we study the challenging problem of inference over temporal knowledge graphs. In particular, the task of temporal link prediction. In general, this is a difficul...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16802
35
7
6471-6479
official
2103.10379
title_snapshot
10.1609/aaai.v35i7.16788
Knowledge-Base Degrees of Inconsistency: Complexity and Counting
https://ojs.aaai.org/index.php/AAAI/article/view/16788
https://ojs.aaai.org/index.php/AAAI/article/download/16788/16595
[ "Johannes K. Fichte", "Markus Hecher", "Arne Meier" ]
Description logics (DLs) are knowledge representation languages that are used in the field of artificial intelligence (AI). A common technique is to query DL knowledge bases, e.g., by Boolean Datalog queries, and ask for entailment. But real world knowledge-bases are often obtained by combining data from various source...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16788
35
7
6349-6357
official
null
null
10.1609/aaai.v35i7.16787
Answering Regular Path Queries Under Approximate Semantics in Lightweight Description Logics
https://ojs.aaai.org/index.php/AAAI/article/view/16787
https://ojs.aaai.org/index.php/AAAI/article/download/16787/16594
[ "Oliver Fernández Gil", "Anni-Yasmin Turhan" ]
Classical regular path queries (RPQs) can be too restrictive for some applications and answering such queries under approximate semantics to relax the query is desirable. While for answering regular path queries over graph databases under approximate semantics algorithms are available, such algorithms are scarce for th...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16787
35
7
6340-6348
official
null
null
10.1609/aaai.v35i7.16786
A Simple Framework for Cognitive Planning
https://ojs.aaai.org/index.php/AAAI/article/view/16786
https://ojs.aaai.org/index.php/AAAI/article/download/16786/16593
[ "Jorge Luis Fernandez Davila", "Dominique Longin", "Emiliano Lorini", "Frédéric Maris" ]
We present a novel approach to cognitive planning, i.e., an agent's planning aimed at changing the cognitive attitudes of another agent including her beliefs and intentions. We encode the cognitive planning problem in an epistemic logic with a semantics exploiting belief bases. We study a NP-fragment of the logic whose...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16786
35
7
6331-6339
official
null
null
10.1609/aaai.v35i7.16785
SMT-based Safety Checking of Parameterized Multi-Agent Systems
https://ojs.aaai.org/index.php/AAAI/article/view/16785
https://ojs.aaai.org/index.php/AAAI/article/download/16785/16592
[ "Paolo Felli", "Alessandro Gianola", "Marco Montali" ]
We study the problem of verifying whether a given parameterized multi-agent system (PMAS) is safe, namely whether none of its possible executions can lead to bad states. These are captured by a state formula existentially quantifying over agents. As the MAS is parameterized, it only describes the finite set of possible...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16785
35
7
6321-6330
official
null
null
10.1609/aaai.v35i7.16784
Treewidth-Aware Complexity in ASP: Not all Positive Cycles are Equally Hard
https://ojs.aaai.org/index.php/AAAI/article/view/16784
https://ojs.aaai.org/index.php/AAAI/article/download/16784/16591
[ "Jorge Fandinno", "Markus Hecher" ]
It is well-known that deciding consistency for normal answer set programs (ASP) is NP-complete, thus, as hard as the satisfaction problem for propositional logic (SAT). The exponential time hypothesis (ETH) implies that the best algorithms to solve these problems take exponential time in the worst case. However, accoun...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16784
35
7
6312-6320
official
2007.04620
title_snapshot
10.1609/aaai.v35i7.16783
On the Complexity of Sum-of-Products Problems over Semirings
https://ojs.aaai.org/index.php/AAAI/article/view/16783
https://ojs.aaai.org/index.php/AAAI/article/download/16783/16590
[ "Thomas Eiter", "Rafael Kiesel" ]
Many important problems in AI, among them SAT, #SAT, and probabilistic inference, amount to Sum-of-Products Problems, i.e. evaluating a sum of products of values from some semiring R. While efficiently solvable cases are known, a systematic study of the complexity of this problem is missing. We characterize the latter ...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16783
35
7
6304-6311
official
null
null
10.1609/aaai.v35i7.16769
A General Setting for Gradual Semantics Dealing with Similarity
https://ojs.aaai.org/index.php/AAAI/article/view/16769
https://ojs.aaai.org/index.php/AAAI/article/download/16769/16576
[ "Leila Amgoud", "Victor David" ]
The paper discusses theoretical foundations that describe principles and processes involved in defining semantics that deal with similarity between arguments. Such semantics compute the strength of an argument on the basis of the strengths of its attackers, similarities between those attackers, and an initial weight as...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16769
35
7
6185-6192
official
null
null
10.1609/aaai.v35i7.16768
Argumentation Frameworks with Strong and Weak Constraints: Semantics and Complexity
https://ojs.aaai.org/index.php/AAAI/article/view/16768
https://ojs.aaai.org/index.php/AAAI/article/download/16768/16575
[ "Gianvincenzo Alfano", "Sergio Greco", "Francesco Parisi", "Irina Trubitsyna" ]
Dung's abstract Argumentation Framework (AF) has emerged as a central formalism in formal argumentation. Key aspects of the success and popularity of Dung's framework include its simplicity and expressiveness. Integrity constraints help to express domain knowledge in a compact and natural way, thus keeping easy the mod...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16768
35
7
6175-6184
official
null
null
10.1609/aaai.v35i7.16770
Living Without Beth and Craig: Definitions and Interpolants in Description Logics with Nominals and Role Inclusions
https://ojs.aaai.org/index.php/AAAI/article/view/16770
https://ojs.aaai.org/index.php/AAAI/article/download/16770/16577
[ "Alessandro Artale", "Jean Christoph Jung", "Andrea Mazzullo", "Ana Ozaki", "Frank Wolter" ]
The Craig interpolation property (CIP) states that an interpolant for an implication exists iff it is valid. The projective Beth definability property (PBDP) states that an explicit definition exists iff a formula stating implicit definability is valid. Thus, the CIP and PBDP transform potentially hard existence proble...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16770
35
7
6193-6201
official
2007.02736
title_judge
10.1609/aaai.v35i7.16771
Equivalent Causal Models
https://ojs.aaai.org/index.php/AAAI/article/view/16771
https://ojs.aaai.org/index.php/AAAI/article/download/16771/16578
[ "Sander Beckers" ]
The aim of this paper is to offer the first systematic exploration and definition of equivalent causal models in the context where both models are not made up of the same variables. The idea is that two models are equivalent when they agree on all "essential" causal information that can be expressed using their common ...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16771
35
7
6202-6209
official
2012.05603
title_snapshot
10.1609/aaai.v35i7.16772
The Counterfactual NESS Definition of Causation
https://ojs.aaai.org/index.php/AAAI/article/view/16772
https://ojs.aaai.org/index.php/AAAI/article/download/16772/16579
[ "Sander Beckers" ]
Beckers & Vennekens recently proposed a definition of actual causation that is based on certain plausible principles, thereby allowing the debate on causation to shift away from its heavy focus on examples towards a more systematic analysis. This paper contributes to that analysis in two ways. First, I show that their ...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16772
35
7
6210-6217
official
2012.05123
title_snapshot
10.1609/aaai.v35i7.16773
Network Satisfaction for Symmetric Relation Algebras with a Flexible Atom
https://ojs.aaai.org/index.php/AAAI/article/view/16773
https://ojs.aaai.org/index.php/AAAI/article/download/16773/16580
[ "Manuel Bodirsky", "Simon Knäuer" ]
Robin Hirsch posed in 1996 the Really Big Complexity Problem: classify the computational complexity of the network satisfaction problem for all finite relation algebras A. We provide a complete classification for the case that A is symmetric and has a flexible atom; the problem is in this case NP-complete or in P. If a...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16773
35
7
6218-6226
official
2008.11943
title_judge
10.1609/aaai.v35i7.16774
Conditional Inference under Disjunctive Rationality
https://ojs.aaai.org/index.php/AAAI/article/view/16774
https://ojs.aaai.org/index.php/AAAI/article/download/16774/16581
[ "Richard Booth", "Ivan Varzinczak" ]
The question of conditional inference, i.e., of which conditional sentences of the form ``if A then, normally, B'' should follow from a set KB of such sentences, has been one of the classic questions of AI, with several well-known solutions proposed. Perhaps the most notable is the rational closure construction of Lehm...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16774
35
7
6227-6234
official
null
null
10.1609/aaai.v35i7.16775
Algebra of Modular Systems: Containment and Equivalence
https://ojs.aaai.org/index.php/AAAI/article/view/16775
https://ojs.aaai.org/index.php/AAAI/article/download/16775/16582
[ "Andrei Bulatov", "Eugenia Ternovska" ]
The Algebra of Modular System is a KR formalism that allows for combinations of modules written in multiple languages. Informally, a module represents a piece of knowledge. It can be given by a knowledge base, be an agent, an ASP, ILP, CP program, etc. Formally, a module is a class of structures over the same vocabular...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16775
35
7
6235-6243
official
null
null
10.1609/aaai.v35i7.16776
Certifying Top-Down Decision-DNNF Compilers
https://ojs.aaai.org/index.php/AAAI/article/view/16776
https://ojs.aaai.org/index.php/AAAI/article/download/16776/16583
[ "Florent Capelli", "Jean-Marie Lagniez", "Pierre Marquis" ]
Certifying the output of tools solving complex problems so as to ensure the correctness of the results they provide is of tremendous importance. Despite being widespread for SAT-solvers, this level of exigence has not yet percolated for tools solving more complex tasks, such as model counting or knowledge compilation. ...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16776
35
7
6244-6253
official
null
null
10.1609/aaai.v35i7.16777
Contextual Conditional Reasoning
https://ojs.aaai.org/index.php/AAAI/article/view/16777
https://ojs.aaai.org/index.php/AAAI/article/download/16777/16584
[ "Giovanni Casini", "Thomas Meyer", "Ivan Varzinczak" ]
We extend the expressivity of classical conditional reasoning by introducing context as a new parameter. The enriched conditional logic generalises the defeasible setting in the style of Kraus, Lehmann and Magidor, and allows for a more refined representation of an agent’s epistemic state, distinguishing, for example, ...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16777
35
7
6254-6261
official
null
null
10.1609/aaai.v35i7.16778
Preferred Explanations for Ontology-Mediated Queries under Existential Rules
https://ojs.aaai.org/index.php/AAAI/article/view/16778
https://ojs.aaai.org/index.php/AAAI/article/download/16778/16585
[ "İsmail İlkan Ceylan", "Thomas Lukasiewicz", "Enrico Malizia", "Cristian Molinaro", "Andrius Vaicenavičius" ]
Recently, explanations for query answers under existential rules have been investigated, where an explanation is an inclusion-minimal subset of a given database that, together with the ontology, entails the query. In this paper, we take a step further and study explanations under different minimality criteria. In parti...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16778
35
7
6262-6270
official
null
null
10.1609/aaai.v35i7.16779
Topology-Aware Correlations Between Relations for Inductive Link Prediction in Knowledge Graphs
https://ojs.aaai.org/index.php/AAAI/article/view/16779
https://ojs.aaai.org/index.php/AAAI/article/download/16779/16586
[ "Jiajun Chen", "Huarui He", "Feng Wu", "Jie Wang" ]
Inductive link prediction---where entities during training and inference stages can be different---has been shown to be promising for completing continuously evolving knowledge graphs. Existing models of inductive reasoning mainly focus on predicting missing links by learning logical rules. However, many existing appro...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16779
35
7
6271-6278
official
2103.03642
title_snapshot
10.1609/aaai.v35i7.16780
A Deep Reinforcement Learning Approach to First-Order Logic Theorem Proving
https://ojs.aaai.org/index.php/AAAI/article/view/16780
https://ojs.aaai.org/index.php/AAAI/article/download/16780/16587
[ "Maxwell Crouse", "Ibrahim Abdelaziz", "Bassem Makni", "Spencer Whitehead", "Cristina Cornelio", "Pavan Kapanipathi", "Kavitha Srinivas", "Veronika Thost", "Michael Witbrock", "Achille Fokoue" ]
Automated theorem provers have traditionally relied on manually tuned heuristics to guide how they perform proof search. Deep reinforcement learning has been proposed as a way to obviate the need for such heuristics, however, its deployment in automated theorem proving remains a challenge. In this paper we introduce TR...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16780
35
7
6279-6287
official
1911.02065
title_snapshot
10.1609/aaai.v35i7.16781
Recursion in Abstract Argumentation is Hard --- On the Complexity of Semantics Based on Weak Admissibility
https://ojs.aaai.org/index.php/AAAI/article/view/16781
https://ojs.aaai.org/index.php/AAAI/article/download/16781/16588
[ "Wolfgang Dvořák", "Markus Ulbricht", "Stefan Woltran" ]
We study the computational complexity of abstract argumentation semantics based on weak admissibility, a recently introduced concept to deal with arguments of self-defeating nature. Our results reveal that semantics based on weak admissibility are of much higher complexity (under typical assumptions) compared to all ar...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16781
35
7
6288-6295
official
null
null
10.1609/aaai.v35i7.16782
The Complexity Landscape of Claim-Augmented Argumentation Frameworks
https://ojs.aaai.org/index.php/AAAI/article/view/16782
https://ojs.aaai.org/index.php/AAAI/article/download/16782/16589
[ "Wolfgang Dvořák", "Alexander Greßler", "Anna Rapberger", "Stefan Woltran" ]
Claim-augmented argumentation frameworks (CAFs) provide a formal basis to analyze conclusion-oriented problems in argumentation by adapting a claim-focused perspective; they extend Dung AFs by associating a claim to each argument representing its conclusion. This additional layer offers various possibilities to general...
main
Knowledge Representation and Reasoning
10.1609/aaai.v35i7.16782
35
7
6296-6303
official
null
null
10.1609/aaai.v35i8.16903
Deep Graph Spectral Evolution Networks for Graph Topological Evolution
https://ojs.aaai.org/index.php/AAAI/article/view/16903
https://ojs.aaai.org/index.php/AAAI/article/download/16903/16710
[ "Negar Etemadyrad", "Qingzhe Li", "Liang Zhao" ]
Characterizing the underlying mechanism of graph topological evolution from a source graph to a target graph has attracted fast increasing attention in the deep graph learning domain. However, it is very challenging to build expressive and efficient models that can handle global and local evolution patterns between sou...
main
Machine Learning
10.1609/aaai.v35i8.16903
35
8
7358-7366
official
null
null
10.1609/aaai.v35i8.16904
Adversarial Training and Provable Robustness: A Tale of Two Objectives
https://ojs.aaai.org/index.php/AAAI/article/view/16904
https://ojs.aaai.org/index.php/AAAI/article/download/16904/16711
[ "Jiameng Fan", "Wenchao Li" ]
We propose a principled framework that combines adversarial training and provable robustness verification for training certifiably robust neural networks. We formulate the training problem as a joint optimization problem with both empirical and provable robustness objectives and develop a novel gradient-descent techniq...
main
Machine Learning
10.1609/aaai.v35i8.16904
35
8
7367-7376
official
2008.06081
title_snapshot
10.1609/aaai.v35i8.16905
Learning a Gradient-free Riemannian Optimizer on Tangent Spaces
https://ojs.aaai.org/index.php/AAAI/article/view/16905
https://ojs.aaai.org/index.php/AAAI/article/download/16905/16712
[ "Xiaomeng Fan", "Zhi Gao", "Yuwei Wu", "Yunde Jia", "Mehrtash Harandi" ]
A principal way of addressing constrained optimization problems is to model them as problems on Riemannian manifolds. Recently, Riemannian meta-optimization provides a promising way for solving constrained optimization problems by learning optimizers on Riemannian manifolds in a data-driven fashion, making it possible ...
main
Machine Learning
10.1609/aaai.v35i8.16905
35
8
7377-7384
official
null
null
10.1609/aaai.v35i8.16906
Learning to Reweight with Deep Interactions
https://ojs.aaai.org/index.php/AAAI/article/view/16906
https://ojs.aaai.org/index.php/AAAI/article/download/16906/16713
[ "Yang Fan", "Yingce Xia", "Lijun Wu", "Shufang Xie", "Weiqing Liu", "Jiang Bian", "Tao Qin", "Xiang-Yang Li" ]
Recently the concept of teaching has been introduced into machine learning, in which a teacher model is used to guide the training of a student model (which will be used in real tasks) through data selection, loss function design, etc. Learning to reweight, which is a specific kind of teaching that reweights training d...
main
Machine Learning
10.1609/aaai.v35i8.16906
35
8
7385-7393
official
2007.04649
title_snapshot
10.1609/aaai.v35i8.16907
Deep Switching Auto-Regressive Factorization: Application to Time Series Forecasting
https://ojs.aaai.org/index.php/AAAI/article/view/16907
https://ojs.aaai.org/index.php/AAAI/article/download/16907/16714
[ "Amirreza Farnoosh", "Bahar Azari", "Sarah Ostadabbas" ]
We introduce deep switching auto-regressive factorization (DSARF), a deep generative model for spatio-temporal data with the capability to unravel recurring patterns in the data and perform robust short- and long-term predictions. Similar to other factor analysis methods, DSARF approximates high dimensional data by a p...
main
Machine Learning
10.1609/aaai.v35i8.16907
35
8
7394-7403
official
2009.05135
title_snapshot
10.1609/aaai.v35i8.16908
UAG: Uncertainty-aware Attention Graph Neural Network for Defending Adversarial Attacks
https://ojs.aaai.org/index.php/AAAI/article/view/16908
https://ojs.aaai.org/index.php/AAAI/article/download/16908/16715
[ "Boyuan Feng", "Yuke Wang", "Yufei Ding" ]
With the increasing popularity of graph-based learning, graph neural networks (GNNs) emerge as the essential tool for gaining insights from graphs. However, unlike the conventional CNNs that have been extensively explored and exhaustively tested, people are still worrying about the GNNs' robustness under the critical s...
main
Machine Learning
10.1609/aaai.v35i8.16908
35
8
7404-7412
official
2009.10235
title_judge
10.1609/aaai.v35i8.16909
SHOT-VAE: Semi-supervised Deep Generative Models With Label-aware ELBO Approximations
https://ojs.aaai.org/index.php/AAAI/article/view/16909
https://ojs.aaai.org/index.php/AAAI/article/download/16909/16716
[ "Hao-Zhe Feng", "Kezhi Kong", "Minghao Chen", "Tianye Zhang", "Minfeng Zhu", "Wei Chen" ]
Semi-supervised variational autoencoders (VAEs) have obtained strong results, but have also encountered the challenge that good ELBO values do not always imply accurate inference results.In this paper, we investigate and propose two causes of this problem: (1) The ELBO objective cannot utilize the label information dir...
main
Machine Learning
10.1609/aaai.v35i8.16909
35
8
7413-7421
official
2011.10684
title_snapshot
10.1609/aaai.v35i8.16910
Learning to Augment for Data-scarce Domain BERT Knowledge Distillation
https://ojs.aaai.org/index.php/AAAI/article/view/16910
https://ojs.aaai.org/index.php/AAAI/article/download/16910/16717
[ "Lingyun Feng", "Minghui Qiu", "Yaliang Li", "Hai-Tao Zheng", "Ying Shen" ]
Despite pre-trained language models such as BERT have achieved appealing performance in a wide range of Natural Language Processing (NLP) tasks, they are computationally expensive to be deployed in real-time applications. A typical method is to adopt knowledge distillation to compress these large pre-trained models (te...
main
Machine Learning
10.1609/aaai.v35i8.16910
35
8
7422-7430
official
2101.08106
title_snapshot
10.1609/aaai.v35i8.16911
Collaborative Group Learning
https://ojs.aaai.org/index.php/AAAI/article/view/16911
https://ojs.aaai.org/index.php/AAAI/article/download/16911/16718
[ "Shaoxiong Feng", "Hongshen Chen", "Xuancheng Ren", "Zhuoye Ding", "Kan Li", "Xu Sun" ]
Collaborative learning has successfully applied knowledge transfer to guide a pool of small student networks towards robust local minima. However, previous approaches typically struggle with drastically aggravated student homogenization when the number of students rises. In this paper, we propose Collaborative Group Le...
main
Machine Learning
10.1609/aaai.v35i8.16911
35
8
7431-7438
official
2009.07712
title_snapshot
10.1609/aaai.v35i8.16912
Practical and Rigorous Uncertainty Bounds for Gaussian Process Regression
https://ojs.aaai.org/index.php/AAAI/article/view/16912
https://ojs.aaai.org/index.php/AAAI/article/download/16912/16719
[ "Christian Fiedler", "Carsten W. Scherer", "Sebastian Trimpe" ]
Gaussian Process regression is a popular nonparametric regression method based on Bayesian principles that provides uncertainty estimates for its predictions. However, these estimates are of a Bayesian nature, whereas for some important applications, like learning-based control with safety guarantees, frequentist uncer...
main
Machine Learning
10.1609/aaai.v35i8.16912
35
8
7439-7447
official
2105.02796
title_snapshot
10.1609/aaai.v35i8.16913
Few-Shot One-Class Classification via Meta-Learning
https://ojs.aaai.org/index.php/AAAI/article/view/16913
https://ojs.aaai.org/index.php/AAAI/article/download/16913/16720
[ "Ahmed Frikha", "Denis Krompaß", "Hans-Georg Köpken", "Volker Tresp" ]
Although few-shot learning and one-class classification (OCC), i.e., learning a binary classifier with data from only one class, have been separately well studied, their intersection remains rather unexplored. Our work addresses the few-shot OCC problem and presents a method to modify the episodic data sampling strateg...
main
Machine Learning
10.1609/aaai.v35i8.16913
35
8
7448-7456
official
2007.04146
title_snapshot
10.1609/aaai.v35i8.16914
Towards Effective Context for Meta-Reinforcement Learning: an Approach based on Contrastive Learning
https://ojs.aaai.org/index.php/AAAI/article/view/16914
https://ojs.aaai.org/index.php/AAAI/article/download/16914/16721
[ "Haotian Fu", "Hongyao Tang", "Jianye Hao", "Chen Chen", "Xidong Feng", "Dong Li", "Wulong Liu" ]
Context, the embedding of previous collected trajectories, is a powerful construct for Meta-Reinforcement Learning (Meta-RL) algorithms. By conditioning on an effective context, Meta-RL policies can easily generalize to new tasks within a few adaptation steps. We argue that improving the quality of context involves ans...
main
Machine Learning
10.1609/aaai.v35i8.16914
35
8
7457-7465
official
2009.13891
title_snapshot
10.1609/aaai.v35i8.16915
Agreement-Discrepancy-Selection: Active Learning with Progressive Distribution Alignment
https://ojs.aaai.org/index.php/AAAI/article/view/16915
https://ojs.aaai.org/index.php/AAAI/article/download/16915/16722
[ "Mengying Fu", "Tianning Yuan", "Fang Wan", "Songcen Xu", "Qixiang Ye" ]
In active learning, the ignorance of aligning unlabeled samples' distribution with that of labeled samples hinders the model trained upon labeled samples from selecting informative unlabeled samples. In this paper, we propose an agreement-discrepancy-selection (ADS) approach, and target at unifying distribution alignme...
main
Machine Learning
10.1609/aaai.v35i8.16915
35
8
7466-7473
official
null
null
10.1609/aaai.v35i8.16916
Generalize a Small Pre-trained Model to Arbitrarily Large TSP Instances
https://ojs.aaai.org/index.php/AAAI/article/view/16916
https://ojs.aaai.org/index.php/AAAI/article/download/16916/16723
[ "Zhang-Hua Fu", "Kai-Bin Qiu", "Hongyuan Zha" ]
For the traveling salesman problem (TSP), the existing supervised learning based algorithms suffer seriously from the lack of generalization ability. To overcome this drawback, this paper tries to train (in supervised manner) a small-scale model, which could be repetitively used to build heat maps for TSP instances of ...
main
Machine Learning
10.1609/aaai.v35i8.16916
35
8
7474-7482
official
2012.10658
title_snapshot
10.1609/aaai.v35i8.16883
Generalized Adversarially Learned Inference
https://ojs.aaai.org/index.php/AAAI/article/view/16883
https://ojs.aaai.org/index.php/AAAI/article/download/16883/16690
[ "Yatin Dandi", "Homanga Bharadhwaj", "Abhishek Kumar", "Piyush Rai" ]
Allowing effective inference of latent vectors while training GANs can greatly increase their applicability in various downstream tasks. Recent approaches, such as ALI and BiGAN frameworks, develop methods of inference of latent variables in GANs by adversarially training an image generator along with an encoder to mat...
main
Machine Learning
10.1609/aaai.v35i8.16883
35
8
7185-7192
official
2006.08089
title_snapshot
10.1609/aaai.v35i8.16884
Sample-Efficient L0-L2 Constrained Structure Learning of Sparse Ising Models
https://ojs.aaai.org/index.php/AAAI/article/view/16884
https://ojs.aaai.org/index.php/AAAI/article/download/16884/16691
[ "Antoine Dedieu", "Miguel Lázaro-Gredilla", "Dileep George" ]
We consider the problem of learning the underlying graph of a sparse Ising model with p nodes from n i.i.d. samples. The most recent and best performing approaches combine an empirical loss (the logistic regression loss or the interaction screening loss) with a regularizer (an L1 penalty or an L1 constraint). This resu...
main
Machine Learning
10.1609/aaai.v35i8.16884
35
8
7193-7200
official
2012.01744
title_snapshot
10.1609/aaai.v35i8.16885
Learning with Retrospection
https://ojs.aaai.org/index.php/AAAI/article/view/16885
https://ojs.aaai.org/index.php/AAAI/article/download/16885/16692
[ "Xiang Deng", "Zhongfei Zhang" ]
Deep neural networks have been successfully deployed in various domains of artificial intelligence, including computer vision and natural language processing. We observe that the current standard procedure for training DNNs discards all the learned information in the past epochs except the current learned weights. An i...
main
Machine Learning
10.1609/aaai.v35i8.16885
35
8
7201-7209
official
2012.13098
title_snapshot
10.1609/aaai.v35i8.16886
Mercer Features for Efficient Combinatorial Bayesian Optimization
https://ojs.aaai.org/index.php/AAAI/article/view/16886
https://ojs.aaai.org/index.php/AAAI/article/download/16886/16693
[ "Aryan Deshwal", "Syrine Belakaria", "Janardhan Rao Doppa" ]
Bayesian optimization (BO) is an efficient framework for solving black-box optimization problems with expensive function evaluations. This paper addresses the BO problem setting for combinatorial spaces (e.g., sequences and graphs) that occurs naturally in science and engineering applications. A prototypical example is...
main
Machine Learning
10.1609/aaai.v35i8.16886
35
8
7210-7218
official
2012.07762
title_snapshot
10.1609/aaai.v35i8.16887
Differentially Private and Communication Efficient Collaborative Learning
https://ojs.aaai.org/index.php/AAAI/article/view/16887
https://ojs.aaai.org/index.php/AAAI/article/download/16887/16694
[ "Jiahao Ding", "Guannan Liang", "Jinbo Bi", "Miao Pan" ]
Collaborative learning has received huge interests due to its capability of exploiting the collective computing power of the wireless edge devices. However, during the learning process, model updates using local private samples and large-scale parameter exchanges among agents impose severe privacy concerns and communic...
main
Machine Learning
10.1609/aaai.v35i8.16887
35
8
7219-7227
official
null
null
10.1609/aaai.v35i8.16888
Knowledge Refinery: Learning from Decoupled Label
https://ojs.aaai.org/index.php/AAAI/article/view/16888
https://ojs.aaai.org/index.php/AAAI/article/download/16888/16695
[ "Qianggang Ding", "Sifan Wu", "Tao Dai", "Hao Sun", "Jiadong Guo", "Zhang-Hua Fu", "Shutao Xia" ]
Recently, a variety of regularization techniques have been widely applied in deep neural networks, which mainly focus on the regularization of weight parameters to encourage generalization effectively. Label regularization techniques are also proposed with the motivation of softening the labels while neglecting the rel...
main
Machine Learning
10.1609/aaai.v35i8.16888
35
8
7228-7235
official
null
null
10.1609/aaai.v35i8.16889
Semi-Supervised Learning with Variational Bayesian Inference and Maximum Uncertainty Regularization
https://ojs.aaai.org/index.php/AAAI/article/view/16889
https://ojs.aaai.org/index.php/AAAI/article/download/16889/16696
[ "Kien Do", "Truyen Tran", "Svetha Venkatesh" ]
We propose two generic methods for improving semi-supervised learning (SSL). The first integrates weight perturbation (WP) into existing “consistency regularization” (CR) based methods. We implement WP by leveraging variational Bayesian inference (VBI). The second method proposes a novel consistency loss called “maximu...
main
Machine Learning
10.1609/aaai.v35i8.16889
35
8
7236-7244
official
2012.01793
title_snapshot
10.1609/aaai.v35i8.16890
Residual Shuffle-Exchange Networks for Fast Processing of Long Sequences
https://ojs.aaai.org/index.php/AAAI/article/view/16890
https://ojs.aaai.org/index.php/AAAI/article/download/16890/16697
[ "Andis Draguns", "Emīls Ozoliņš", "Agris Šostaks", "Matīss Apinis", "Karlis Freivalds" ]
Attention is a commonly used mechanism in sequence processing, but it is of O(n^2) complexity which prevents its application to long sequences. The recently introduced neural Shuffle-Exchange network offers a computation-efficient alternative, enabling the modelling of long-range dependencies in O(n log n) time. The mo...
main
Machine Learning
10.1609/aaai.v35i8.16890
35
8
7245-7253
official
2004.04662
title_snapshot
10.1609/aaai.v35i8.16891
A One-Size-Fits-All Solution to Conservative Bandit Problems
https://ojs.aaai.org/index.php/AAAI/article/view/16891
https://ojs.aaai.org/index.php/AAAI/article/download/16891/16698
[ "Yihan Du", "Siwei Wang", "Longbo Huang" ]
In this paper, we study a family of conservative bandit problems (CBPs) with sample-path reward constraints, i.e., the learner's reward performance must be at least as well as a given baseline at any time. We propose a One-Size-Fits-All solution to CBPs and present its applications to three encompassed problems, i.e. c...
main
Machine Learning
10.1609/aaai.v35i8.16891
35
8
7254-7261
official
2012.07341
title_snapshot
10.1609/aaai.v35i8.16892
Combinatorial Pure Exploration with Full-Bandit or Partial Linear Feedback
https://ojs.aaai.org/index.php/AAAI/article/view/16892
https://ojs.aaai.org/index.php/AAAI/article/download/16892/16699
[ "Yihan Du", "Yuko Kuroki", "Wei Chen" ]
In this paper, we first study the problem of combinatorial pure exploration with full-bandit feedback (CPE-BL), where a learner is given a combinatorial action space X \subseteq {0,1}^d, and in each round the learner pulls an action x \in X and receives a random reward with expectation x^T \theta, with \theta \in \R^d ...
main
Machine Learning
10.1609/aaai.v35i8.16892
35
8
7262-7270
official
2006.07905
title_snapshot
10.1609/aaai.v35i8.16893
Knowledge Refactoring for Inductive Program Synthesis
https://ojs.aaai.org/index.php/AAAI/article/view/16893
https://ojs.aaai.org/index.php/AAAI/article/download/16893/16700
[ "Sebastijan Dumancic", "Tias Guns", "Andrew Cropper" ]
Humans constantly restructure knowledge to use it more efficiently. Our goal is to give a machine learning system similar abilities so that it can learn more efficiently. We introduce the knowledge refactoring problem, where the goal is to restructure a learner's knowledge base to reduce its size and to minimise redund...
main
Machine Learning
10.1609/aaai.v35i8.16893
35
8
7271-7278
official
2004.09931
title_snapshot
10.1609/aaai.v35i8.16894
Semi-Supervised Metric Learning: A Deep Resurrection
https://ojs.aaai.org/index.php/AAAI/article/view/16894
https://ojs.aaai.org/index.php/AAAI/article/download/16894/16701
[ "Ujjal Kr Dutta", "Mehrtash Harandi", "C Chandra Shekhar" ]
Distance Metric Learning (DML) seeks to learn a discriminative embedding where similar examples are closer, and dissimilar examples are apart. In this paper, we address the problem of Semi-Supervised DML (SSDML) that tries to learn a metric using a few labeled examples, and abundantly available unlabeled examples. SSDM...
main
Machine Learning
10.1609/aaai.v35i8.16894
35
8
7279-7287
official
2105.05061
title_snapshot
10.1609/aaai.v35i8.16895
Reinforcement Learning with Trajectory Feedback
https://ojs.aaai.org/index.php/AAAI/article/view/16895
https://ojs.aaai.org/index.php/AAAI/article/download/16895/16702
[ "Yonathan Efroni", "Nadav Merlis", "Shie Mannor" ]
The standard feedback model of reinforcement learning requires revealing the reward of every visited state-action pair. However, in practice, it is often the case that such frequent feedback is not available. In this work, we take a first step towards relaxing this assumption and require a weaker form of feedback, whic...
main
Machine Learning
10.1609/aaai.v35i8.16895
35
8
7288-7295
official
2008.06036
title_snapshot
10.1609/aaai.v35i8.16896
The Parameterized Complexity of Clustering Incomplete Data
https://ojs.aaai.org/index.php/AAAI/article/view/16896
https://ojs.aaai.org/index.php/AAAI/article/download/16896/16703
[ "Eduard Eiben", "Robert Ganian", "Iyad Kanj", "Sebastian Ordyniak", "Stefan Szeider" ]
We study fundamental clustering problems for incomplete data. Specifically, given a set of incomplete d-dimensional vectors (representing rows of a matrix), the goal is to complete the missing vector entries in a way that admits a partitioning of the vectors into at most k clusters with radius or diameter at most r. We...
main
Machine Learning
10.1609/aaai.v35i8.16896
35
8
7296-7304
official
1911.01465
title_snapshot
10.1609/aaai.v35i8.16897
Learning Prediction Intervals for Model Performance
https://ojs.aaai.org/index.php/AAAI/article/view/16897
https://ojs.aaai.org/index.php/AAAI/article/download/16897/16704
[ "Benjamin Elder", "Matthew Arnold", "Anupama Murthi", "Jiří Navrátil" ]
Understanding model performance on unlabeled data is a fundamental challenge of developing, deploying, and maintaining AI systems. Model performance is typically evaluated using test sets or periodic manual quality assessments, both of which require laborious manual data labeling. Automated performance prediction techn...
main
Machine Learning
10.1609/aaai.v35i8.16897
35
8
7305-7313
official
2012.08625
title_snapshot
10.1609/aaai.v35i8.16898
Adaptive Gradient Methods for Constrained Convex Optimization and Variational Inequalities
https://ojs.aaai.org/index.php/AAAI/article/view/16898
https://ojs.aaai.org/index.php/AAAI/article/download/16898/16705
[ "Alina Ene", "Huy L. Nguyen", "Adrian Vladu" ]
We provide new adaptive first-order methods for constrained convex optimization. Our main algorithms AdaACSA and AdaAGD+ are accelerated methods, which are universal in the sense that they achieve nearly-optimal convergence rates for both smooth and non-smooth functions, even when they only have access to stochastic gr...
main
Machine Learning
10.1609/aaai.v35i8.16898
35
8
7314-7321
official
2007.08840
title_snapshot
10.1609/aaai.v35i8.16899
Projection-Free Bandit Optimization with Privacy Guarantees
https://ojs.aaai.org/index.php/AAAI/article/view/16899
https://ojs.aaai.org/index.php/AAAI/article/download/16899/16706
[ "Alina Ene", "Huy L. Nguyen", "Adrian Vladu" ]
We design differentially private algorithms for the bandit convex optimization problem in the projection-free setting. This setting is important whenever the decision set has a complex geometry, and access to it is done efficiently only through a linear optimization oracle, hence Euclidean projections are unavailable (...
main
Machine Learning
10.1609/aaai.v35i8.16899
35
8
7322-7330
official
2012.12138
title_snapshot
10.1609/aaai.v35i8.16900
Learning to Cascade: Confidence Calibration for Improving the Accuracy and Computational Cost of Cascade Inference Systems
https://ojs.aaai.org/index.php/AAAI/article/view/16900
https://ojs.aaai.org/index.php/AAAI/article/download/16900/16707
[ "Shohei Enomoro", "Takeharu Eda" ]
Recently, deep neural networks have become to be used in a variety of applications. While the accuracy of deep neural networks is increasing, the confidence score, which indicates the reliability of the prediction results, is becoming more important. Deep neural networks are seen as highly accurate but known to be over...
main
Machine Learning
10.1609/aaai.v35i8.16900
35
8
7331-7339
official
2104.09286
title_snapshot
10.1609/aaai.v35i8.16901
Regret Bounds for Batched Bandits
https://ojs.aaai.org/index.php/AAAI/article/view/16901
https://ojs.aaai.org/index.php/AAAI/article/download/16901/16708
[ "Hossein Esfandiari", "Amin Karbasi", "Abbas Mehrabian", "Vahab Mirrokni" ]
We present simple algorithms for batched stochastic multi-armed bandit and batched stochastic linear bandit problems. We prove bounds for their expected regrets that improve and extend the best known regret bounds of Gao, Han, Ren, and Zhou (NeurIPS 2019), for any number of batches. In particular, our algorithms in bot...
main
Machine Learning
10.1609/aaai.v35i8.16901
35
8
7340-7348
official
1910.04959
title_snapshot
10.1609/aaai.v35i8.16902
Almost Linear Time Density Level Set Estimation via DBSCAN
https://ojs.aaai.org/index.php/AAAI/article/view/16902
https://ojs.aaai.org/index.php/AAAI/article/download/16902/16709
[ "Hossein Esfandiari", "Vahab Mirrokni", "Peilin Zhong" ]
In this work we focus on designing a fast algorithm for lambda-density level set estimation via DBSCAN clustering. Previous work (Jiang ICML’17, and Jang and Jiang ICML’19) shows that under some natural assumptions DBSCAN and its variant DBSCAN++ can be used to estimate the lambda-density level set with near-optimal Ha...
main
Machine Learning
10.1609/aaai.v35i8.16902
35
8
7349-7357
official
null
null
10.1609/aaai.v35i8.16863
Scalable and Explainable 1-Bit Matrix Completion via Graph Signal Learning
https://ojs.aaai.org/index.php/AAAI/article/view/16863
https://ojs.aaai.org/index.php/AAAI/article/download/16863/16670
[ "Chao Chen", "Dongsheng Li", "Junchi Yan", "Hanchi Huang", "Xiaokang Yang" ]
One-bit matrix completion is an important class of positive-unlabeled (PU) learning problems where the observations consist of only positive examples, e.g., in top-N recommender systems. For the first time, we show that 1-bit matrix completion can be formulated as the problem of recovering clean graph signals from nois...
main
Machine Learning
10.1609/aaai.v35i8.16863
35
8
7011-7019
official
null
null
10.1609/aaai.v35i8.16864
Addressing Action Oscillations through Learning Policy Inertia
https://ojs.aaai.org/index.php/AAAI/article/view/16864
https://ojs.aaai.org/index.php/AAAI/article/download/16864/16671
[ "Chen Chen", "Hongyao Tang", "Jianye Hao", "Wulong Liu", "Zhaopeng Meng" ]
Deep reinforcement learning (DRL) algorithms have been demonstrated to be effective on a wide range of challenging decision making and control tasks. However, these methods typically suffer from severe action oscillations in particular in discrete action setting, which means that agents select different actions within ...
main
Machine Learning
10.1609/aaai.v35i8.16864
35
8
7020-7027
official
2103.02287
title_snapshot
10.1609/aaai.v35i8.16865
Cross-Layer Distillation with Semantic Calibration
https://ojs.aaai.org/index.php/AAAI/article/view/16865
https://ojs.aaai.org/index.php/AAAI/article/download/16865/16672
[ "Defang Chen", "Jian-Ping Mei", "Yuan Zhang", "Can Wang", "Zhe Wang", "Yan Feng", "Chun Chen" ]
Recently proposed knowledge distillation approaches based on feature-map transfer validate that intermediate layers of a teacher model can serve as effective targets for training a student model to obtain better generalization ability. Existing studies mainly focus on particular representation forms for knowledge trans...
main
Machine Learning
10.1609/aaai.v35i8.16865
35
8
7028-7036
official
2012.03236
title_snapshot
10.1609/aaai.v35i8.16866
Distributed Ranking with Communications: Approximation Analysis and Applications
https://ojs.aaai.org/index.php/AAAI/article/view/16866
https://ojs.aaai.org/index.php/AAAI/article/download/16866/16673
[ "Hong Chen", "Yingjie Wang", "Yulong Wang", "Feng Zheng" ]
Learning theory of distributed algorithms has recently attracted enormous attention in the machine learning community. However, most of existing works focus on learning problem with pointwise loss and does not consider the communication among local processors. In this paper, we propose a new distributed pairwise rankin...
main
Machine Learning
10.1609/aaai.v35i8.16866
35
8
7037-7045
official
null
null
10.1609/aaai.v35i8.16867
THOR, Trace-based Hardware-driven Layer-Oriented Natural Gradient Descent Computation
https://ojs.aaai.org/index.php/AAAI/article/view/16867
https://ojs.aaai.org/index.php/AAAI/article/download/16867/16674
[ "Mengyun Chen", "Kaixin Gao", "Xiaolei Liu", "Zidong Wang", "Ningxi Ni", "Qian Zhang", "Lei Chen", "Chao Ding", "Zhenghai Huang", "Min Wang", "Shuangling Wang", "Fan Yu", "Xinyuan Zhao", "Dachuan Xu" ]
It is well-known that second-order optimizer can accelerate the training of deep neural networks, however, the huge computation cost of second-order optimization makes it impractical to apply in real practice. In order to reduce the cost, many methods have been proposed to approximate a second-order matrix. Inspired by...
main
Machine Learning
10.1609/aaai.v35i8.16867
35
8
7046-7054
official
null
null
10.1609/aaai.v35i8.16868
Neural Relational Inference with Efficient Message Passing Mechanisms
https://ojs.aaai.org/index.php/AAAI/article/view/16868
https://ojs.aaai.org/index.php/AAAI/article/download/16868/16675
[ "Siyuan Chen", "Jiahai Wang", "Guoqing Li" ]
Many complex processes can be viewed as dynamical systems of interacting agents. In many cases, only the state sequences of individual agents are observed, while the interacting relations and the dynamical rules are unknown. The neural relational inference (NRI) model adopts graph neural networks that pass messages ove...
main
Machine Learning
10.1609/aaai.v35i8.16868
35
8
7055-7063
official
2101.09486
title_snapshot
10.1609/aaai.v35i8.16869
Fitting the Search Space of Weight-sharing NAS with Graph Convolutional Networks
https://ojs.aaai.org/index.php/AAAI/article/view/16869
https://ojs.aaai.org/index.php/AAAI/article/download/16869/16676
[ "Xin Chen", "Lingxi Xie", "Jun Wu", "Longhui Wei", "Yuhui Xu", "Qi Tian" ]
Neural architecture search has attracted wide attentions in both academia and industry. To accelerate it, researchers proposed weight-sharing methods which first train a super-network to reuse computation among different operators, from which exponentially many sub-networks can be sampled and efficiently evaluated. The...
main
Machine Learning
10.1609/aaai.v35i8.16869
35
8
7064-7072
official
2004.08423
title_snapshot
10.1609/aaai.v35i8.16870
Deep Spiking Neural Network with Neural Oscillation and Spike-Phase Information
https://ojs.aaai.org/index.php/AAAI/article/view/16870
https://ojs.aaai.org/index.php/AAAI/article/download/16870/16677
[ "Yi Chen", "Hong Qu", "Malu Zhang", "Yuchen Wang" ]
Deep spiking neural network (DSNN) is a promising computational model towards artificial intelligence. It benefits from both the DNNs and SNNs through a hierarchy structure to extract multiple levels of abstraction and the event-driven computational manner to provide ultra-low-power neuromorphic implementation, respect...
main
Machine Learning
10.1609/aaai.v35i8.16870
35
8
7073-7080
official
null
null
10.1609/aaai.v35i8.16871
HyDRA: Hypergradient Data Relevance Analysis for Interpreting Deep Neural Networks
https://ojs.aaai.org/index.php/AAAI/article/view/16871
https://ojs.aaai.org/index.php/AAAI/article/download/16871/16678
[ "Yuanyuan Chen", "Boyang Li", "Han Yu", "Pengcheng Wu", "Chunyan Miao" ]
The behaviors of deep neural networks (DNNs) are notoriously resistant to human interpretations. In this paper, we propose Hypergradient Data Relevance Analysis, or HyDRA, which interprets the predictions made by DNNs as effects of their training data. Existing approaches generally estimate data contributions around th...
main
Machine Learning
10.1609/aaai.v35i8.16871
35
8
7081-7089
official
2102.02515
title_snapshot
10.1609/aaai.v35i8.16872
NASGEM: Neural Architecture Search via Graph Embedding Method
https://ojs.aaai.org/index.php/AAAI/article/view/16872
https://ojs.aaai.org/index.php/AAAI/article/download/16872/16679
[ "Hsin-Pai Cheng", "Tunhou Zhang", "Yixing Zhang", "Shiyu Li", "Feng Liang", "Feng Yan", "Meng Li", "Vikas Chandra", "Hai Li", "Yiran Chen" ]
Neural Architecture Search (NAS) automates and prospers the design of neural networks. Estimator-based NAS has been proposed recently to model the relationship between architectures and their performance to enable scalable and flexible search. However, existing estimator-based methods encode the architecture into a lat...
main
Machine Learning
10.1609/aaai.v35i8.16872
35
8
7090-7098
official
2007.04452
title_snapshot
10.1609/aaai.v35i8.16873
Neighborhood Consensus Networks for Unsupervised Multi-view Outlier Detection
https://ojs.aaai.org/index.php/AAAI/article/view/16873
https://ojs.aaai.org/index.php/AAAI/article/download/16873/16680
[ "Li Cheng", "Yijie Wang", "Xinwang Liu" ]
Multi-view outlier detection recently attracted rapidly growing attention with the development of multi-view learning. Although promising performance demonstrated, we observe that identifying outliers in multi-view data is still a challenging task due to the complicated characteristics of multi-view data. Specifically,...
main
Machine Learning
10.1609/aaai.v35i8.16873
35
8
7099-7106
official
null
null
10.1609/aaai.v35i8.16874
Self-Progressing Robust Training
https://ojs.aaai.org/index.php/AAAI/article/view/16874
https://ojs.aaai.org/index.php/AAAI/article/download/16874/16681
[ "Minhao Cheng", "Pin-Yu Chen", "Sijia Liu", "Shiyu Chang", "Cho-Jui Hsieh", "Payel Das" ]
Enhancing model robustness under new and even adversarial environments is a crucial milestone toward building trustworthy machine learning systems. Current robust training methods such as adversarial training explicitly uses an ``attack'' (e.g., l_infty-norm bounded perturbation) to generate adversarial examples during...
main
Machine Learning
10.1609/aaai.v35i8.16874
35
8
7107-7115
official
2012.11769
title_snapshot
10.1609/aaai.v35i8.16875
Continuous-Time Attention for Sequential Learning
https://ojs.aaai.org/index.php/AAAI/article/view/16875
https://ojs.aaai.org/index.php/AAAI/article/download/16875/16682
[ "Jen-Tzung Chien", "Yi-Hsiang Chen" ]
Attention mechanism is crucial for sequential learning where a wide range of applications have been successfully developed. This mechanism is basically trained to spotlight on the region of interest in hidden states of sequence data. Most of the attention methods compute the attention score through relating between a q...
main
Machine Learning
10.1609/aaai.v35i8.16875
35
8
7116-7124
official
null
null
10.1609/aaai.v35i8.16876
Transfer Learning for Efficient Iterative Safety Validation
https://ojs.aaai.org/index.php/AAAI/article/view/16876
https://ojs.aaai.org/index.php/AAAI/article/download/16876/16683
[ "Anthony Corso", "Mykel J. Kochenderfer" ]
Safety validation is important during the development of safety-critical autonomous systems but can require significant computational effort. Existing algorithms often start from scratch each time the system under test changes. We apply transfer learning to improve the efficiency of reinforcement learning based safety ...
main
Machine Learning
10.1609/aaai.v35i8.16876
35
8
7125-7132
official
2012.05336
title_snapshot
10.1609/aaai.v35i8.16877
Computationally Tractable Riemannian Manifolds for Graph Embeddings
https://ojs.aaai.org/index.php/AAAI/article/view/16877
https://ojs.aaai.org/index.php/AAAI/article/download/16877/16684
[ "Calin Cruceru", "Gary Becigneul", "Octavian-Eugen Ganea" ]
Representing graphs as sets of node embeddings in certain curved Riemannian manifolds has recently gained momentum in machine learning due to their desirable geometric inductive biases (e.g., hierarchical structures benefit from hyperbolic geometry). However, going beyond embedding spaces of constant sectional curvatur...
main
Machine Learning
10.1609/aaai.v35i8.16877
35
8
7133-7141
official
2002.08665
title_snapshot
10.1609/aaai.v35i8.16878
Cost-aware Graph Generation: A Deep Bayesian Optimization Approach
https://ojs.aaai.org/index.php/AAAI/article/view/16878
https://ojs.aaai.org/index.php/AAAI/article/download/16878/16685
[ "Jiaxu Cui", "Bo Yang", "Bingyi Sun", "Jiming Liu" ]
Graph-structured data is ubiquitous throughout the natural and social sciences, ranging from complex drug molecules to artificial neural networks. Evaluating their functional properties, e.g., drug effectiveness and prediction accuracy, is usually costly in terms of time, money, energy, or environment, becoming a bottl...
main
Machine Learning
10.1609/aaai.v35i8.16878
35
8
7142-7150
official
null
null
10.1609/aaai.v35i8.16879
Type-augmented Relation Prediction in Knowledge Graphs
https://ojs.aaai.org/index.php/AAAI/article/view/16879
https://ojs.aaai.org/index.php/AAAI/article/download/16879/16686
[ "Zijun Cui", "Pavan Kapanipathi", "Kartik Talamadupula", "Tian Gao", "Qiang Ji" ]
Knowledge graphs (KGs) are of great importance to many real world applications, but they generally suffer from incomplete information in the form of missing relations between entities. Knowledge graph completion (also known as relation prediction) is the task of inferring missing facts given existing ones. Most of the ...
main
Machine Learning
10.1609/aaai.v35i8.16879
35
8
7151-7159
official
2009.07938
title_snapshot
10.1609/aaai.v35i8.16880
The Value-Improvement Path: Towards Better Representations for Reinforcement Learning
https://ojs.aaai.org/index.php/AAAI/article/view/16880
https://ojs.aaai.org/index.php/AAAI/article/download/16880/16687
[ "Will Dabney", "André Barreto", "Mark Rowland", "Robert Dadashi", "John Quan", "Marc G. Bellemare", "David Silver" ]
In value-based reinforcement learning (RL), unlike in supervised learning, the agent faces not a single, stationary, approximation problem, but a sequence of value prediction problems. Each time the policy improves, the nature of the problem changes, shifting both the distribution of states and their values. In this pa...
main
Machine Learning
10.1609/aaai.v35i8.16880
35
8
7160-7168
official
2006.02243
title_snapshot
10.1609/aaai.v35i8.16881
Loop Estimator for Discounted Values in Markov Reward Processes
https://ojs.aaai.org/index.php/AAAI/article/view/16881
https://ojs.aaai.org/index.php/AAAI/article/download/16881/16688
[ "Falcon Z. Dai", "Matthew R. Walter" ]
At the working heart of policy iteration algorithms commonly used and studied in the discounted setting of reinforcement learning, the policy evaluation step estimates the value of states with samples from a Markov reward process induced by following a Markov policy in a Markov decision process. We propose a simple and...
main
Machine Learning
10.1609/aaai.v35i8.16881
35
8
7169-7175
official
2002.06299
title_snapshot
10.1609/aaai.v35i8.16882
Differentially Private Stochastic Coordinate Descent
https://ojs.aaai.org/index.php/AAAI/article/view/16882
https://ojs.aaai.org/index.php/AAAI/article/download/16882/16689
[ "Georgios Damaskinos", "Celestine Mendler-Dünner", "Rachid Guerraoui", "Nikolaos Papandreou", "Thomas Parnell" ]
In this paper we tackle the challenge of making the stochastic coordinate descent algorithm differentially private. Compared to the classical gradient descent algorithm where updates operate on a single model vector and controlled noise addition to this vector suffices to hide critical information about individuals, st...
main
Machine Learning
10.1609/aaai.v35i8.16882
35
8
7176-7184
official
2006.07272
title_snapshot
10.1609/aaai.v35i8.16843
Improving Ensemble Robustness by Collaboratively Promoting and Demoting Adversarial Robustness
https://ojs.aaai.org/index.php/AAAI/article/view/16843
https://ojs.aaai.org/index.php/AAAI/article/download/16843/16650
[ "Anh Tuan Bui", "Trung Le", "He Zhao", "Paul Montague", "Olivier DeVel", "Tamas Abraham", "Dinh Phung" ]
Ensemble-based Adversarial Training is a principled approach to achieve robustness against adversarial attacks. An important technicality of this approach is to control the transferability of adversarial examples between ensemble members. We propose in this work a simple, but effective strategy to collaborate among com...
main
Machine Learning
10.1609/aaai.v35i8.16843
35
8
6831-6839
official
2009.09612
title_snapshot
10.1609/aaai.v35i8.16844
Cascade Size Distributions: Why They Matter and How to Compute Them Efficiently
https://ojs.aaai.org/index.php/AAAI/article/view/16844
https://ojs.aaai.org/index.php/AAAI/article/download/16844/16651
[ "Rebekka Burkholz", "John Quackenbush" ]
Cascade models are central to understanding, predicting, and controlling epidemic spreading and information propagation. Related optimization, including influence maximization, model parameter inference, or the development of vaccination strategies, relies heavily on sampling from a model. This is either inefficient or...
main
Machine Learning
10.1609/aaai.v35i8.16844
35
8
6840-6849
official
1909.05416
title_snapshot
10.1609/aaai.v35i8.16845
Exploiting Diverse Characteristics and Adversarial Ambivalence for Domain Adaptive Segmentation
https://ojs.aaai.org/index.php/AAAI/article/view/16845
https://ojs.aaai.org/index.php/AAAI/article/download/16845/16652
[ "Bowen Cai", "Huan Fu", "Rongfei Jia", "Binqiang Zhao", "Hua Li", "Yinghui Xu" ]
Adapting semantic segmentation models to new domains is an important but challenging problem. Recently enlightening progress has been made, but the performance of existing methods is unsatisfactory on real datasets where the new target domain comprises of heterogeneous sub-domains (e.g. diverse weather characteristics)...
main
Machine Learning
10.1609/aaai.v35i8.16845
35
8
6850-6858
official
2012.05608
title_snapshot
10.1609/aaai.v35i8.16846
Time Series Domain Adaptation via Sparse Associative Structure Alignment
https://ojs.aaai.org/index.php/AAAI/article/view/16846
https://ojs.aaai.org/index.php/AAAI/article/download/16846/16653
[ "Ruichu Cai", "Jiawei Chen", "Zijian Li", "Wei Chen", "Keli Zhang", "Junjian Ye", "Zhuozhang Li", "Xiaoyan Yang", "Zhenjie Zhang" ]
Domain adaptation on time series data is an important but challenging task. Most of the existing works in this area are based on the learning of the domain-invariant representation of the data with the help of restrictions like MMD. However, such extraction of the domain-invariant representation is a non-trivial task f...
main
Machine Learning
10.1609/aaai.v35i8.16846
35
8
6859-6867
official
2012.11797
title_snapshot
10.1609/aaai.v35i8.16847
A Blind Block Term Decomposition of High Order Tensors
https://ojs.aaai.org/index.php/AAAI/article/view/16847
https://ojs.aaai.org/index.php/AAAI/article/download/16847/16654
[ "Yunfeng Cai", "Ping Li" ]
Tensor decompositions have found many applications in signal processing, data mining, machine learning, etc. In particular, the block term decomposition (BTD), which is a generalization of CP decomposition and Tucker decomposition/HOSVD, has been successfully used for the compression and acceleration of neural networks...
main
Machine Learning
10.1609/aaai.v35i8.16847
35
8
6868-6876
official
null
null
10.1609/aaai.v35i8.16848
Open-Set Recognition with Gaussian Mixture Variational Autoencoders
https://ojs.aaai.org/index.php/AAAI/article/view/16848
https://ojs.aaai.org/index.php/AAAI/article/download/16848/16655
[ "Alexander Cao", "Yuan Luo", "Diego Klabjan" ]
In inference, open-set classification is to either classify a sample into a known class from training or reject it as an unknown class. Existing deep open-set classifiers train explicit closed-set classifiers, in some cases disjointly utilizing reconstruction, which we find dilutes the latent representation's ability t...
main
Machine Learning
10.1609/aaai.v35i8.16848
35
8
6877-6884
official
2006.02003
title_snapshot