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14,102
A Simple Yet Efficient Rank One Update for Covariance Matrix Adaptation
cs.NE
In this paper, we propose an efficient approximated rank one update for covariance matrix adaptation evolution strategy (CMA-ES). It makes use of two evolution paths as simple as that of CMA-ES, while avoiding the computational matrix decomposition. We analyze the algorithms' properties and behaviors. We experimentally...
computer science
14,103
Porcellio scaber algorithm (PSA) for solving constrained optimization problems
cs.NE
In this paper, we extend a bio-inspired algorithm called the porcellio scaber algorithm (PSA) to solve constrained optimization problems, including a constrained mixed discrete-continuous nonlinear optimization problem. Our extensive experiment results based on benchmark optimization problems show that the PSA has a be...
computer science
14,104
STDP Based Pruning of Connections and Weight Quantization in Spiking Neural Networks for Energy Efficient Recognition
cs.NE
Spiking Neural Networks (SNNs) with a large number of weights and varied weight distribution can be difficult to implement in emerging in-memory computing hardware due to the limitations on crossbar size (implementing dot product), the constrained number of conductance levels in non-CMOS devices and the power budget. W...
computer science
14,105
Efficient Computation in Adaptive Artificial Spiking Neural Networks
cs.NE
Artificial Neural Networks (ANNs) are bio-inspired models of neural computation that have proven highly effective. Still, ANNs lack a natural notion of time, and neural units in ANNs exchange analog values in a frame-based manner, a computationally and energetically inefficient form of communication. This contrasts sha...
computer science
14,106
Evolution in Virtual Worlds
cs.NE
This chapter discusses the possibility of instilling a virtual world with mechanisms for evolution and natural selection in order to generate rich ecosystems of complex organisms in a process akin to biological evolution. Some previous work in the area is described, and successes and failures are discussed. The compone...
computer science
14,107
Moderate Environmental Variation Promotes the Evolution of Robust Solutions
cs.NE
Previous evolutionary studies demonstrated how evaluating evolving agents in variable environmental conditions enable them to develop solutions that are robust to environmental variation. We demonstrate how the robustness of the agents can be further improved by exposing them also to environmental variations throughout...
computer science
14,108
Pre-Processing-Free Gear Fault Diagnosis Using Small Datasets with Deep Convolutional Neural Network-Based Transfer Learning
cs.NE
Early fault diagnosis in complex mechanical systems such as gearbox has always been a great challenge, even with the recent development in deep neural networks. The performance of a classic fault diagnosis system predominantly depends on the features extracted and the classifier subsequently applied. Although a large n...
computer science
14,109
Efficient Licence Plate Detection By Unique Edge Detection Algorithm and Smarter Interpretation Through IoT
cs.NE
Vehicles play a vital role in modern day transportation systems. Number plate provides a standard means of identification for any vehicle. To serve this purpose, automatic licence plate recognition system was developed. This consisted of four major steps: Pre-processing of the obtained image, extraction of licence plat...
computer science
14,110
BAS: Beetle Antennae Search Algorithm for Optimization Problems
cs.NE
Meta-heuristic algorithms have become very popular because of powerful performance on the optimization problem. A new algorithm called beetle antennae search algorithm (BAS) is proposed in the paper inspired by the searching behavior of longhorn beetles. The BAS algorithm imitates the function of antennae and the rando...
computer science
14,111
Beetle Antennae Search without Parameter Tuning (BAS-WPT) for Multi-objective Optimization
cs.NE
Beetle antennae search (BAS) is an efficient meta-heuristic algorithm inspired by foraging behaviors of beetles. This algorithm includes several parameters for tuning and the existing results are limited to solve single objective optimization. This work pushes forward the research on BAS by providing one variant that r...
computer science
14,112
BP-STDP: Approximating Backpropagation using Spike Timing Dependent Plasticity
cs.NE
The problem of training spiking neural networks (SNNs) is a necessary precondition to understanding computations within the brain, a field still in its infancy. Previous work has shown that supervised learning in multi-layer SNNs enables bio-inspired networks to recognize patterns of stimuli through hierarchical featur...
computer science
14,113
Neural Networks Architecture Evaluation in a Quantum Computer
cs.NE
In this work, we propose a quantum algorithm to evaluate neural networks architectures named Quantum Neural Network Architecture Evaluation (QNNAE). The proposed algorithm is based on a quantum associative memory and the learning algorithm for artificial neural networks. Unlike conventional algorithms for evaluating ne...
computer science
14,114
Reliability and Sharpness in Border Crossing Traffic Interval Prediction
cs.NE
Short-term traffic volume prediction models have been extensively studied in the past few decades. However, most of the previous studies only focus on single-value prediction. Considering the uncertain and chaotic nature of the transportation system, an accurate and reliable prediction interval with upper and lower bou...
computer science
14,115
Concurrent Pump Scheduling and Storage Level Optimization Using Meta-Models and Evolutionary Algorithms
cs.NE
In spite of the growing computational power offered by the commodity hardware, fast pump scheduling of complex water distribution systems is still a challenge. In this paper, the Artificial Neural Network (ANN) meta-modeling technique has been employed with a Genetic Algorithm (GA) for simultaneously optimizing the pum...
computer science
14,116
On evolutionary selection of blackjack strategies
cs.NE
We apply the approach of evolutionary programming to the problem of optimization of the blackjack basic strategy. We demonstrate that the population of initially random blackjack strategies evolves and saturates to a profitable performance in about one hundred generations. The resulting strategy resembles the known bla...
computer science
14,117
Bidirectional deep-readout echo state networks
cs.NE
We propose a deep architecture for the classification of multivariate time series. By means of a recurrent and untrained reservoir we generate a vectorial representation that embeds temporal relationships in the data. To improve the memorization capability, we implement a bidirectional reservoir, whose last state captu...
computer science
14,118
Addressing Expensive Multi-objective Games with Postponed Preference Articulation via Memetic Co-evolution
cs.NE
This paper presents algorithmic and empirical contributions demonstrating that the convergence characteristics of a co-evolutionary approach to tackle Multi-Objective Games (MOGs) with postponed preference articulation can often be hampered due to the possible emergence of the so-called Red Queen effect. Accordingly, i...
computer science
14,119
Community detection with spiking neural networks for neuromorphic hardware
cs.NE
We present results related to the performance of an algorithm for community detection which incorporates event-driven computation. We define a mapping which takes a graph G to a system of spiking neurons. Using a fully connected spiking neuron system, with both inhibitory and excitatory synaptic connections, the firing...
computer science
14,120
Two-Archive Evolutionary Algorithm for Constrained Multi-Objective Optimization
cs.NE
When solving constrained multi-objective optimization problems, an important issue is how to balance convergence, diversity and feasibility simultaneously. To address this issue, this paper proposes a parameter-free constraint handling technique, two-archive evolutionary algorithm, for constrained multi-objective optim...
computer science
14,121
Novel Adaptive Genetic Algorithm Sample Consensus
cs.NE
Random sample consensus (RANSAC) is a successful algorithm in model fitting applications. It is vital to have strong exploration phase when there are an enormous amount of outliers within the dataset. Achieving a proper model is guaranteed by pure exploration strategy of RANSAC. However, finding the optimum result requ...
computer science
14,122
Collaborative Evolution of 3D Models
cs.NE
We present a computational model of creative design based on collaborative interactive genetic algorithms. In our model, designers individually guide interactive genetic algorithms (IGAs) to generate and explore potential design solutions quickly. Collaboration is supported by allowing designers to share solutions amon...
computer science
14,123
Parameters Optimization of Deep Learning Models using Particle Swarm Optimization
cs.NE
Deep learning has been successfully applied in several fields such as machine translation, manufacturing, and pattern recognition. However, successful application of deep learning depends upon appropriately setting its parameters to achieve high quality results. The number of hidden layers and the number of neurons in ...
computer science
14,124
Adversarial Networks for Prostate Cancer Detection
cs.NE
The large number of trainable parameters of deep neural networks renders them inherently data hungry. This characteristic heavily challenges the medical imaging community and to make things even worse, many imaging modalities are ambiguous in nature leading to rater-dependant annotations that current loss formulations ...
computer science
14,125
Universal discrete-time reservoir computers with stochastic inputs and linear readouts using non-homogeneous state-affine systems
cs.NE
A new class of non-homogeneous state-affine systems is introduced for use in reservoir computing. Sufficient conditions are identified that guarantee first, that the associated reservoir computers with linear readouts are causal, time-invariant, and satisfy the fading memory property and second, that a subset of this c...
computer science
14,126
Improving Brain Storm Optimization Algorithm via Simplex Search
cs.NE
Through modeling human's brainstorming process, the brain storm optimization (BSO) algorithm has become a promising population based evolution algorithm. However, BSO is often good at global exploration but not good enough at local exploitation, just like most global optimization algorithms. In this paper, the Nelder-M...
computer science
14,127
Backpropagation generalized for output derivatives
cs.NE
Backpropagation algorithm is the cornerstone for neural network analysis. Paper extends it for training any derivatives of neural network's output with respect to its input. By the dint of it feedforward networks can be used to solve or verify solutions of partial or simple, linear or nonlinear differential equations. ...
computer science
14,128
Robustness, Evolvability and Phenotypic Complexity: Insights from Evolving Digital Circuits
cs.NE
We show how the characteristics of the evolutionary algorithm influence the evolvability of candidate solutions, i.e. the propensity of evolving individuals to generate better solutions as a result of genetic variation. More specifically, (1+{\lambda}) evolutionary strategies largely outperform ({\mu}+1) evolutionary s...
computer science
14,129
Enhancing approximation abilities of neural networks by training derivatives
cs.NE
Method for increasing precision of feedforward networks is presented. With the aid of it they can serve as a better tool for describing smooth functions. Namely, it is shown that when training uses derivatives of target function up to the fourth order, approximation can be nearly machine precise. It is demonstrated in ...
computer science
14,130
A Particle Swarm Optimization-based Flexible Convolutional Auto-Encoder for Image Classification
cs.NE
Convolutional auto-encoders have shown their remarkable performance in stacking to deep convolutional neural networks for classifying image data during past several years. However, they are unable to construct the state-of-the-art convolutional neural networks due to their intrinsic architectures. In this regard, we pr...
computer science
14,131
Evolving Unsupervised Deep Neural Networks for Learning Meaningful Representations
cs.NE
Deep Learning (DL) aims at learning the \emph{meaningful representations}. A meaningful representation refers to the one that gives rise to significant performance improvement of associated Machine Learning (ML) tasks by replacing the raw data as the input. However, optimal architecture design and model parameter estim...
computer science
14,132
Neural networks catching up with finite differences in solving partial differential equations in higher dimensions
cs.NE
Fully connected multilayer perceptrons are used for obtaining numerical solutions of partial differential equations in various dimensions. Independent variables are fed into the input layer, and the output is considered as solution's value. To train such a network one can use square of equation's residual as a cost fun...
computer science
14,133
Data Clustering using a Hybrid of Fuzzy C-Means and Quantum-behaved Particle Swarm Optimization
cs.NE
Fuzzy clustering has become a widely used data mining technique and plays an important role in grouping, traversing and selectively using data for user specified applications. The deterministic Fuzzy C-Means (FCM) algorithm may result in suboptimal solutions when applied to multidimensional data in real-world, time-con...
computer science
14,134
Self-adaptation of Genetic Operators Through Genetic Programming Techniques
cs.NE
Here we propose an evolutionary algorithm that self modifies its operators at the same time that candidate solutions are evolved. This tackles convergence and lack of diversity issues, leading to better solutions. Operators are represented as trees and are evolved using genetic programming (GP) techniques. The proposed...
computer science
14,135
Selective-Candidate Framework with Similarity Selection Rule for Evolutionary Optimization
cs.NE
This paper proposes to resolve limitations of the traditional one-reproduction (OR) framework which produces only one candidate in a single reproduction procedure. A selective-candidate framework with similarity selection rule (SCSS) is suggested to make possible, a selective direction of search. In the SCSS framework,...
computer science
14,136
On the Relationship Between the OpenAI Evolution Strategy and Stochastic Gradient Descent
cs.NE
Because stochastic gradient descent (SGD) has shown promise optimizing neural networks with millions of parameters and few if any alternatives are known to exist, it has moved to the heart of leading approaches to reinforcement learning (RL). For that reason, the recent result from OpenAI showing that a particular kind...
computer science
14,137
Virtual Sensor Modelling using Neural Networks with Coefficient-based Adaptive Weights and Biases Search Algorithm for Diesel Engines
cs.NE
With the explosion in the field of Big Data and introduction of more stringent emission norms every three to five years, automotive companies must not only continue to enhance the fuel economy ratings of their products, but also provide valued services to their customers such as delivering engine performance and health...
computer science
14,138
Learning Based on CC1 and CC4 Neural Networks
cs.NE
We propose that a general learning system should have three kinds of agents corresponding to sensory, short-term, and long-term memory that implicitly will facilitate context-free and context-sensitive aspects of learning. These three agents perform mututally complementary functions that capture aspects of the human co...
computer science
14,139
Towards co-evolution of fitness predictors and Deep Neural Networks
cs.NE
Deep neural networks proved to be a very useful and powerful tool with many practical applications. They especially excel at learning from large data sets with labeled samples. However, in order to achieve good learning results, the network architecture has to be carefully designed. Creating an optimal topology require...
computer science
14,140
Interactive Decomposition Multi-Objective Optimization via Progressively Learned Value Functions
cs.NE
Decomposition has become an increasingly popular technique for evolutionary multi-objective optimization (EMO). A decomposition-based EMO algorithm is usually designed to approximate a whole Pareto-optimal front (PF). However, in practice, the decision maker (DM) might only be interested in her/his region of interest (...
computer science
14,141
Recent Advances in Recurrent Neural Networks
cs.NE
Recurrent neural networks (RNNs) are capable of learning features and long term dependencies from sequential and time-series data. The RNNs have a stack of non-linear units where at least one connection between units forms a directed cycle. A well-trained RNN can model any dynamical system; however, training RNNs is mo...
computer science
14,142
DENSER: Deep Evolutionary Network Structured Representation
cs.NE
Deep Evolutionary Network Structured Representation (DENSER) is a novel approach to automatically design Artificial Neural Networks (ANNs) using Evolutionary Computation (EC). The algorithm not only searches for the best network topology (e.g., number of layers, type of layers), but also tunes hyper-parameters, such as...
computer science
14,143
Dynamic Island Model based on Spectral Clustering in Genetic Algorithm
cs.NE
How to maintain relative high diversity is important to avoid premature convergence in population-based optimization methods. Island model is widely considered as a major approach to achieve this because of its flexibility and high efficiency. The model maintains a group of sub-populations on different islands and allo...
computer science
14,144
Complexity Theory for Discrete Black-Box Optimization Heuristics
cs.NE
A predominant topic in the theory of evolutionary algorithms and, more generally, theory of randomized black-box optimization techniques is running time analysis. Running time analysis aims at understanding the performance of a given heuristic on a given problem by bounding the number of function evaluations that are n...
computer science
14,145
Australia's long-term electricity demand forecasting using deep neural networks
cs.NE
Accurate prediction of long-term electricity demand has a significant role in demand side management and electricity network planning and operation. Demand over-estimation results in over-investment in network assets, driving up the electricity prices, while demand under-estimation may lead to under-investment resultin...
computer science
14,146
On Enhancing Genetic Algorithms Using New Crossovers
cs.NE
This paper investigates the use of more than one crossover operator to enhance the performance of genetic algorithms. Novel crossover operators are proposed such as the Collision crossover, which is based on the physical rules of elastic collision, in addition to proposing two selection strategies for the crossover ope...
computer science
14,147
Data-driven forecasting of solar irradiance
cs.NE
This paper describes a flexible approach to short term prediction of meteorological variables. In particular, we focus on the prediction of the solar irradiance one hour ahead, a task that has high practical value when optimizing solar energy resources. As D\'efi EGC 2018 provides us with time series data for multiple ...
computer science
14,148
Overcoming the vanishing gradient problem in plain recurrent networks
cs.NE
Plain recurrent networks greatly suffer from the vanishing gradient problem while Gated Neural Networks (GNNs) such as Long-short Term Memory (LSTM) and Gated Recurrent Unit (GRU) deliver promising results in many sequence learning tasks through sophisticated network designs. This paper shows how we can address this pr...
computer science
14,149
Improving TSP Solutions Using GA with a New Hybrid Mutation Based on Knowledge and Randomness
cs.NE
Genetic algorithm (GA) is an efficient tool for solving optimization problems by evolving solutions, as it mimics the Darwinian theory of natural evolution. The mutation operator is one of the key success factors in GA, as it is considered the exploration operator of GA. Various mutation operators exist to solve hard c...
computer science
14,150
Hyper-heuristics Can Achieve Optimal Performance for Pseudo-Boolean Optimisation
cs.NE
Selection hyper-heuristics are randomised search methodologies which choose and execute heuristics from a set of low-level heuristics. Recent research for the LeadingOnes benchmark function has shown that the standard Simple Random, Permutation, Random Gradient, Greedy and Reinforcement Learning selection mechanisms sh...
computer science
14,151
Free Energy Minimization Using the 2-D Cluster Variation Method: Initial Code Verification and Validation
cs.NE
A new approach for general artificial intelligence (GAI), building on neural network deep learning architectures, can make use of one or more hidden layers that have the ability to continuously reach a free energy minimum even after input stimulus is removed, allowing for a variety of possible behaviors. One reason tha...
computer science
14,152
Deep Interactive Evolution
cs.NE
This paper describes an approach that combines generative adversarial networks (GANs) with interactive evolutionary computation (IEC). While GANs can be trained to produce lifelike images, they are normally sampled randomly from the learned distribution, providing limited control over the resulting output. On the other...
computer science
14,153
Sine Cosine Crow Search Algorithm: A powerful hybrid meta heuristic for global optimization
cs.NE
This paper presents a novel hybrid algorithm named Since Cosine Crow Search Algorithm. To propose the SCCSA, two novel algorithms are considered including Crow Search Algorithm (CSA) and Since Cosine Algorithm (SCA). The advantages of the two algorithms are considered and utilize to design an efficient hybrid algorithm...
computer science
14,154
The Benefits of Population Diversity in Evolutionary Algorithms: A Survey of Rigorous Runtime Analyses
cs.NE
Population diversity is crucial in evolutionary algorithms to enable global exploration and to avoid poor performance due to premature convergence. This book chapter reviews runtime analyses that have shown benefits of population diversity, either through explicit diversity mechanisms or through naturally emerging dive...
computer science
14,155
Multi-Layer Competitive-Cooperative Framework for Performance Enhancement of Differential Evolution
cs.NE
Differential Evolution (DE) is one of the most powerful optimizers in the evolutionary algorithm (EA) family. In recent years, many DE variants have been proposed to enhance performance. However, when compared with each other, significant differences in performances are seldomly observed. To meet this challenge of a mo...
computer science
14,156
Improved Runtime Bounds for the Univariate Marginal Distribution Algorithm via Anti-Concentration
cs.NE
Unlike traditional evolutionary algorithms which produce offspring via genetic operators, Estimation of Distribution Algorithms (EDAs) sample solutions from probabilistic models which are learned from selected individuals. It is hoped that EDAs may improve optimisation performance on epistatic fitness landscapes by lea...
computer science
14,157
Memory-Augmented Neural Networks for Predictive Process Analytics
cs.NE
Process analytics involves a sophisticated layer of data analytics built over the traditional notion of process mining. The flexible execution of business process instances involves multiple critical decisions including what task to perform next and what resources to allocate to a task. In this paper, we explore the ap...
computer science
14,158
Resset: A Recurrent Model for Sequence of Sets with Applications to Electronic Medical Records
cs.NE
Modern healthcare is ripe for disruption by AI. A game changer would be automatic understanding the latent processes from electronic medical records, which are being collected for billions of people worldwide. However, these healthcare processes are complicated by the interaction between at least three dynamic componen...
computer science
14,159
An Area and Energy Efficient Design of Domain-Wall Memory-Based Deep Convolutional Neural Networks using Stochastic Computing
cs.NE
With recent trend of wearable devices and Internet of Things (IoTs), it becomes attractive to develop hardware-based deep convolutional neural networks (DCNNs) for embedded applications, which require low power/energy consumptions and small hardware footprints. Recent works demonstrated that the Stochastic Computing (S...
computer science
14,160
An Adaptive Genetic Algorithm for Solving N-Queens Problem
cs.NE
In this paper a Metaheuristic approach for solving the N-Queens Problem is introduced to find the best possible solution in a reasonable amount of time. Genetic Algorithm is used with a novel fitness function as the Metaheuristic. The aim of N-Queens Problem is to place N queens on an N x N chessboard, in a way so that...
computer science
14,161
Brain-inspired photonic signal processor for periodic pattern generation and chaotic system emulation
cs.NE
Reservoir computing is a bio-inspired computing paradigm for processing time-dependent signals. Its hardware implementations have received much attention because of their simplicity and remarkable performance on a series of benchmark tasks. In previous experiments the output was uncoupled from the system and in most ca...
computer science
14,162
LightNN: Filling the Gap between Conventional Deep Neural Networks and Binarized Networks
cs.NE
Application-specific integrated circuit (ASIC) implementations for Deep Neural Networks (DNNs) have been adopted in many systems because of their higher classification speed. However, although they may be characterized by better accuracy, larger DNNs require significant energy and area, thereby limiting their wide adop...
computer science
14,163
Energy-Efficient CMOS Memristive Synapses for Mixed-Signal Neuromorphic System-on-a-Chip
cs.NE
Emerging non-volatile memory (NVM), or memristive, devices promise energy-efficient realization of deep learning, when efficiently integrated with mixed-signal integrated circuits on a CMOS substrate. Even though several algorithmic challenges need to be addressed to turn the vision of memristive Neuromorphic Systems-o...
computer science
14,164
Using a reservoir computer to learn chaotic attractors, with applications to chaos synchronisation and cryptography
cs.NE
Using the machine learning approach known as reservoir computing, it is possible to train one dynamical system to emulate another. We show that such trained reservoir computers reproduce the properties of the attractor of the chaotic system sufficiently well to exhibit chaos synchronisation. That is, the trained reserv...
computer science
14,165
Drift Theory in Continuous Search Spaces: Expected Hitting Time of the (1+1)-ES with 1/5 Success Rule
cs.NE
This paper explores the use of the standard approach for proving runtime bounds in discrete domains---often referred to as drift analysis---in the context of optimization on a continuous domain. Using this framework we analyze the (1+1) Evolution Strategy with one-fifth success rule on the sphere function. To deal with...
computer science
14,166
MOEA/D with Angle-based Constrained Dominance Principle for Constrained Multi-objective Optimization Problems
cs.NE
This paper proposes a novel constraint-handling mechanism named angle-based constrained dominance principle (ACDP) embedded in a decomposition-based multi-objective evolutionary algorithm (MOEA/D) to solve constrained multi-objective optimization problems (CMOPs). To maintain the diversity of the working population, AC...
computer science
14,167
Optimal approximation of continuous functions by very deep ReLU networks
cs.NE
We prove that deep ReLU neural networks with conventional fully-connected architectures with $W$ weights can approximate continuous $\nu$-variate functions $f$ with uniform error not exceeding $a_\nu\omega_f(c_\nu W^{-2/\nu}),$ where $\omega_f$ is the modulus of continuity of $f$ and $a_\nu, c_\nu$ are some $\nu$-depen...
computer science
14,168
Slice as an Evolutionary Service: Genetic Optimization for Inter-Slice Resource Management in 5G Networks
cs.NE
In the context of Fifth Generation (5G) mobile networks, the concept of "slice as a service" (SaaS) promotes mobile network operators to flexibly share infrastructures with mobile service providers and stakeholders. However, it also challenges with an emerging demand for efficient online algorithms to optimize the requ...
computer science
14,169
A theoretical guideline for designing an effective adaptive particle swarm
cs.NE
In this paper we theoretically investigate underlying assumptions that have been used for designing adaptive particle swarm optimization algorithms in the past years. We relate these assumptions to the movement patterns of particles controlled by coefficient values (inertia weight and acceleration coefficient) and intr...
computer science
14,170
Discrepancy-based Evolutionary Diversity Optimization
cs.NE
Diversity plays a crucial role in evolutionary computation. While diversity has been mainly used to prevent the population of an evolutionary algorithm from premature convergence, the use of evolutionary algorithms to obtain a diverse set of solutions has gained increasing attention in recent years. Diversity optimizat...
computer science
14,171
Evolution of Images with Diversity and Constraints Using a Generator Network
cs.NE
Evolutionary search has been extensively used to generate artistic images. Raw images have high dimensionality which makes a direct search for an image challenging. In previous work this problem has been addressed by using compact symbolic encodings or by constraining images with priors. Recent developments in deep lea...
computer science
14,172
A Machine Learning Approach for Virtual Flow Metering and Forecasting
cs.NE
We are concerned with robust and accurate forecasting of multiphase flow rates in wells and pipelines during oil and gas production. In practice, the possibility to physically measure the rates is often limited; besides, it is desirable to estimate future values of multiphase rates based on the previous behavior of the...
computer science
14,173
Implementation of Neural Network and feature extraction to classify ECG signals
cs.NE
This paper presents a suitable and efficient implementation of a feature extraction algorithm (Pan Tompkins algorithm) on electrocardiography (ECG) signals, for detection and classification of four cardiac diseases: Sleep Apnea, Arrhythmia, Supraventricular Arrhythmia and Long Term Atrial Fibrillation (AF) and differen...
computer science
14,174
Layer-wise synapse optimization for implementing neural networks on general neuromorphic architectures
cs.NE
Deep artificial neural networks (ANNs) can represent a wide range of complex functions. Implementing ANNs in Von Neumann computing systems, though, incurs a high energy cost due to the bottleneck created between CPU and memory. Implementation on neuromorphic systems may help to reduce energy demand. Conventional ANNs m...
computer science
14,175
Towards Deep Representation Learning with Genetic Programming
cs.NE
Genetic Programming (GP) is an evolutionary algorithm commonly used for machine learning tasks. In this paper we present a method that allows GP to transform the representation of a large-scale machine learning dataset into a more compact representation, by means of processing features from the original representation ...
computer science
14,176
Complex-valued Neural Networks with Non-parametric Activation Functions
cs.NE
Complex-valued neural networks (CVNNs) are a powerful modeling tool for domains where data can be naturally interpreted in terms of complex numbers. However, several analytical properties of the complex domain (e.g., holomorphicity) make the design of CVNNs a more challenging task than their real counterpart. In this p...
computer science
14,177
Reservoir computing with simple oscillators: Virtual and real networks
cs.NE
The reservoir computing scheme is a machine learning mechanism which utilizes the naturally occuring computational capabilities of dynamical systems. One important subset of systems that has proven powerful both in experiments and theory are delay-systems. In this work, we investigate the reservoir computing performanc...
computer science
14,178
Improved Regularity Model-based EDA for Many-objective Optimization
cs.NE
The performance of multi-objective evolutionary algorithms deteriorates appreciably in solving many-objective optimization problems which encompass more than three objectives. One of the known rationales is the loss of selection pressure which leads to the selected parents not generating promising offspring towards Par...
computer science
14,179
IGD Indicator-based Evolutionary Algorithm for Many-objective Optimization Problems
cs.NE
Inverted Generational Distance (IGD) has been widely considered as a reliable performance indicator to concurrently quantify the convergence and diversity of multi- and many-objective evolutionary algorithms. In this paper, an IGD indicator-based evolutionary algorithm for solving many-objective optimization problems (...
computer science
14,180
Back to Basics: Benchmarking Canonical Evolution Strategies for Playing Atari
cs.NE
Evolution Strategies (ES) have recently been demonstrated to be a viable alternative to reinforcement learning (RL) algorithms on a set of challenging deep RL problems, including Atari games and MuJoCo humanoid locomotion benchmarks. While the ES algorithms in that work belonged to the specialized class of natural evol...
computer science
14,181
Enhancing Gaussian Estimation of Distribution Algorithm by Exploiting Evolution Direction with Archive
cs.NE
As a typical model-based evolutionary algorithm (EA), estimation of distribution algorithm (EDA) possesses unique characteristics and has been widely applied to global optimization. However, the common-used Gaussian EDA (GEDA) usually suffers from premature convergence which severely limits its search efficiency. This ...
computer science
14,182
Boosting Cooperative Coevolution for Large Scale Optimization with a Fine-Grained Computation Resource Allocation Strategy
cs.NE
Cooperative coevolution (CC) has shown great potential in solving large scale optimization problems (LSOPs). However, traditional CC algorithms often waste part of computation resource (CR) as they equally allocate CR among all the subproblems. The recently developed contribution-based CC (CBCC) algorithms improve the ...
computer science
14,183
Surrogate Model Assisted Cooperative Coevolution for Large Scale Optimization
cs.NE
It has been shown that cooperative coevolution (CC) can effectively deal with large scale optimization problems (LSOPs) through a divide-and-conquer strategy. However, its performance is severely restricted by the current context-vector-based sub-solution evaluation method since this method needs to access the original...
computer science
14,184
Avoiding overfitting of multilayer perceptrons by training derivatives
cs.NE
Resistance to overfitting is observed for neural networks trained with extended backpropagation algorithm. In addition to target values, its cost function uses derivatives of those up to the $4^{\mathrm{th}}$ order. For common applications of neural networks, high order derivatives are not readily available, so simpler...
computer science
14,185
A Global Information Based Adaptive Threshold for Grouping Large Scale Global Optimization Problems
cs.NE
By taking the idea of divide-and-conquer, cooperative coevolution (CC) provides a powerful architecture for large scale global optimization (LSGO) problems, but its efficiency relies highly on the decomposition strategy. It has been shown that differential grouping (DG) performs well on decomposing LSGO problems by eff...
computer science
14,186
Exploiting the Potential of Standard Convolutional Autoencoders for Image Restoration by Evolutionary Search
cs.NE
Researchers have applied deep neural networks to image restoration tasks, in which they proposed various network architectures, loss functions, and training methods. In particular, adversarial training, which is employed in recent studies, seems to be a key ingredient to success. In this paper, we show that simple conv...
computer science
14,187
A theory of sequence indexing and working memory in recurrent neural networks
cs.NE
To accommodate structured approaches of neural computation, we propose a class of recurrent neural networks for indexing and storing sequences of symbols or analog data vectors. These networks with randomized input weights and orthogonal recurrent weights implement coding principles previously described in vector symbo...
computer science
14,188
Optimal localist and distributed coding of spatiotemporal spike patterns through STDP and coincidence detection
cs.NE
Repeating spatiotemporal spike patterns exist and carry information. Here we investigate how a single neuron can optimally signal the presence of one given pattern (localist coding), or of either one of several patterns (distributed coding, i.e. the neuron's response is ambiguous but the identity of the pattern could b...
computer science
14,189
Enhancing Cooperative Coevolution for Large Scale Optimization by Adaptively Constructing Surrogate Models
cs.NE
It has been shown that cooperative coevolution (CC) can effectively deal with large scale optimization problems (LSOPs) through a divide-and-conquer strategy. However, its performance is severely restricted by the current context-vector-based sub-solution evaluation method since this method needs to access the original...
computer science
14,190
Niching an Archive-based Gaussian Estimation of Distribution Algorithm via Adaptive Clustering
cs.NE
As a model-based evolutionary algorithm, estimation of distribution algorithm (EDA) possesses unique characteristics and has been widely applied to global optimization. However, traditional Gaussian EDA (GEDA) may suffer from premature convergence and has a high risk of falling into local optimum when dealing with mult...
computer science
14,191
On the Effectiveness of Simple Success-Based Parameter Selection Mechanisms for Two Classical Discrete Black-Box Optimization Benchmark Problems
cs.NE
Despite significant empirical and theoretically supported evidence that non-static parameter choices can be strongly beneficial in evolutionary computation, the question how to best adjust parameter values plays only a marginal role in contemporary research on discrete black-box optimization. This has led to the unsati...
computer science
14,192
Style Memory: Making a Classifier Network Generative
cs.NE
Deep networks have shown great performance in classification tasks. However, the parameters learned by the classifier networks usually discard stylistic information of the input, in favour of information strictly relevant to classification. We introduce a network that has the capacity to do both classification and reco...
computer science
14,193
Multi-objective evolution for 3D RTS Micro
cs.NE
We attack the problem of controlling teams of autonomous units during skirmishes in real-time strategy games. Earlier work had shown promise in evolving control algorithm parameters that lead to high performance team behaviors similar to those favored by good human players in real-time strategy games like Starcraft. Th...
computer science
14,194
An FPGA-based Massively Parallel Neuromorphic Cortex Simulator
cs.NE
This paper presents a massively parallel and scalable neuromorphic cortex simulator designed for simulating large and structurally connected spiking neural networks, such as complex models of various areas of the cortex. The main novelty of this work is the abstraction of a neuromorphic architecture into clusters repre...
computer science
14,195
The Surprising Creativity of Digital Evolution: A Collection of Anecdotes from the Evolutionary Computation and Artificial Life Research Communities
cs.NE
Biological evolution provides a creative fount of complex and subtle adaptations, often surprising the scientists who discover them. However, because evolution is an algorithmic process that transcends the substrate in which it occurs, evolution's creativity is not limited to nature. Indeed, many researchers in the fie...
computer science
14,196
Bit-Tactical: Exploiting Ineffectual Computations in Convolutional Neural Networks: Which, Why, and How
cs.NE
We show that, during inference with Convolutional Neural Networks (CNNs), more than 2x to $8x ineffectual work can be exposed if instead of targeting those weights and activations that are zero, we target different combinations of value stream properties. We demonstrate a practical application with Bit-Tactical (TCL), ...
computer science
14,197
Enhancing Evolutionary Optimization in Uncertain Environments by Allocating Evaluations via Multi-armed Bandit Algorithms
cs.NE
Optimization problems with uncertain fitness functions are common in the real world, and present unique challenges for evolutionary optimization approaches. Existing issues include excessively expensive evaluation, lack of solution reliability, and incapability in maintaining high overall fitness during optimization. U...
computer science
14,198
Enhanced Optimization with Composite Objectives and Novelty Selection
cs.NE
An important benefit of multi-objective search is that it maintains a diverse population of candidates, which helps in deceptive problems in particular. Not all diversity is useful, however: candidates that optimize only one objective while ignoring others are rarely helpful. This paper proposes a solution: The origina...
computer science
14,199
Conditional Activation for Diverse Neurons in Heterogeneous Networks
cs.NE
In this paper, we propose a new scheme for modelling the diverse behavior of neurons. We introduce the conditional activation, in which a neurons activation function is dynamically modified by a control signal. We apply this method to recreate behavior of special neurons existing in the human auditory and visual system...
computer science
14,200
Multi-objective Analysis of MAP-Elites Performance
cs.NE
In certain complex optimization tasks, it becomes necessary to use multiple measures to characterize the performance of different algorithms. This paper presents a method that combines ordinal effect sizes with Pareto dominance to analyze such cases. Since the method is ordinal, it can also generalize across different ...
computer science
14,201
A mullti- or many- objective evolutionary algorithm with global loop update
cs.NE
Multi- or many-objective evolutionary algorithm- s(MOEAs), especially the decomposition-based MOEAs have been widely concerned in recent years. The decomposition-based MOEAs emphasize convergence and diversity in a simple model and have made a great success in dealing with theoretical and practical multi- or many-objec...
computer science