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C to HDL-Applications-C-to-VHDL compilers are very useful for large designs or for implementing code that might change in the future. Designing a large application entirely in HDL may be very difficult and time-consuming; the abstraction of a high level language for such a large application will often reduce total deve... | milkshake721/2.1M-wiki-STEM |
C to HDL-Applications-Flow to HDL tools have a similar aim, but with flow rather than C-based design. | milkshake721/2.1M-wiki-STEM |
C to HDL-Example tools-LegUp Open Source ANSI C to Verilog tool, based on LLVM compiler.
LegUp Commercial variant of LegUp.
VHDP Simplified VHDL with support of procedural programming.
bambu (free and open source ANSI C to Verilog tool based on GCC compiler) from PandA website CBG CtoV A tool developed 1995-99 by DJ Gr... | milkshake721/2.1M-wiki-STEM |
C to HDL-Example tools-C-to-Verilog tool (NISC) from University of California, Irvine Altium Designer 6.9 and 7.0 (a.k.a. Summer 08) from Altium Nios II C-to-Hardware Acceleration Compiler from Altera Catapult C tool from Mentor Graphics Cynthesizer from Forte Design Systems SystemC from Celoxica (defunct) Handel-C fro... | milkshake721/2.1M-wiki-STEM |
C to HDL-Example tools-PipelineC C-like hardware description language adding High-level synthesis-like automatic pipelining as a language construct/compiler feature. | milkshake721/2.1M-wiki-STEM |
Product term-Product term-In Boolean logic, a product term is a conjunction of literals, where each literal is either a variable or its negation. | milkshake721/2.1M-wiki-STEM |
Product term-Examples-Examples of product terms include: A∧B A∧(¬B)∧(¬C) ¬A | milkshake721/2.1M-wiki-STEM |
Product term-Origin-The terminology comes from the similarity of AND to multiplication as in the ring structure of Boolean rings. | milkshake721/2.1M-wiki-STEM |
Product term-Minterms-For a boolean function of n variables x1,…,xn , a product term in which each of the n variables appears once (in either its complemented or uncomplemented form) is called a minterm. Thus, a minterm is a logical expression of n variables that employs only the complement operator and the conjunct... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Automatic parallelization-Automatic parallelization, also auto parallelization, or autoparallelization refers to converting sequential code into multi-threaded and/or vectorized code in order to use multiple processors simultaneously in a shared-memory multiprocessor (SMP) machine. Fully autom... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Automatic parallelization-There are two main approaches to parallelization of loops: pipelined multi-threading and cyclic multi-threading. For example, consider a loop that on each iteration applies a hundred operations, and runs for a thousand iterations. This can be thought of as a grid of 1... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Automatic parallelization technique-Parse This is the first stage where the scanner will read the input source files to identify all static and extern usages. Each line in the file will be checked against pre-defined patterns to segregate into tokens. These tokens will be stored in a file whic... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Automatic parallelization technique-Analyze The analyzer is used to identify sections of code that can be executed concurrently. The analyzer uses the static data information provided by the scanner-parser. The analyzer will first find all the totally independent functions and mark them as ind... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Automatic parallelization technique-Code Generation The scheduler will generate a list of all the tasks and the details of the cores on which they will execute along with the time that they will execute for. The code Generator will insert special constructs in the code that will be read during... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Cyclic multi-threading-A cyclic multi-threading parallelizing compiler tries to split up a loop so that each iteration can be executed on a separate processor concurrently. | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Cyclic multi-threading-Compiler parallelization analysis The compiler usually conducts two passes of analysis before actual parallelization in order to determine the following: Is it safe to parallelize the loop? Answering this question needs accurate dependence analysis and alias analysis Is ... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Cyclic multi-threading-The second pass attempts to justify the parallelization effort by comparing the theoretical execution time of the code after parallelization to the code's sequential execution time. Somewhat counterintuitively, code does not always benefit from parallel execution. The ex... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Pipelined multi-threading-A pipelined multi-threading parallelizing compiler tries to break up the sequence of operations inside a loop into a series of code blocks, such that each code block can be executed on separate processors concurrently.
There are many pleasingly parallel problems that ... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Pipelined multi-threading-For example, when producing live broadcast television, the following tasks must be performed many times a second: Read a frame of raw pixel data from the image sensor, Do MPEG motion compensation on the raw data, Entropy compress the motion vectors and other data, Bre... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Pipelined multi-threading-Recent research focuses on using the power of GPU's and multicore systems to compute such independent code blocks( or simply independent iterations of a loop) at runtime. The memory accessed (whether direct or indirect) can be simply marked for different iterations o... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Difficulties-Automatic parallelization by compilers or tools is very difficult due to the following reasons: dependence analysis is hard for code that uses indirect addressing, pointers, recursion, or indirect function calls because it is difficult to detect such dependencies at compile time; ... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Workaround-Due to the inherent difficulties in full automatic parallelization, several easier approaches exist to get a parallel program in higher quality. One of these is to allow programmers to add "hints" to their programs to guide compiler parallelization, such as HPF for distributed memo... | milkshake721/2.1M-wiki-STEM |
Automatic parallelization-Parallelizing compilers and tools-Most research compilers for automatic parallelization consider Fortran programs, because Fortran makes stronger guarantees about aliasing than languages such as C. Typical examples are: Paradigm compiler Polaris compiler Rice Fortran D compiler SUIF compiler V... | milkshake721/2.1M-wiki-STEM |
Zfone-Zfone-Zfone is software for secure voice communication over the Internet (VoIP), using the ZRTP protocol. It is created by Phil Zimmermann, the creator of the PGP encryption software. Zfone works on top of existing SIP- and RTP-programs, but should work with any SIP- and RTP-compliant VoIP-program. | milkshake721/2.1M-wiki-STEM |
Zfone-Zfone-Zfone turns many existing VoIP clients into secure phones. It runs in the Internet Protocol stack on any Windows XP, Mac OS X, or Linux PC, and intercepts and filters all the VoIP packets as they go in and out of the machine, and secures the call on the fly. A variety of different software VoIP clients can ... | milkshake721/2.1M-wiki-STEM |
Zfone-Zfone-Zfone's libZRTP SDK libraries are released under either the Affero General Public License (AGPL) or a commercial license. Note that only the libZRTP SDK libraries are provided under the AGPL. The parts of Zfone that are not part of the libZRTP SDK libraries are not licensed under the AGPL or any other open ... | milkshake721/2.1M-wiki-STEM |
Zfone-Zfone-It appears that Zfone development has stagnated, however, as the most recent version was released on 22 Mar 2009. In addition, since 29 Jan 2011, it has not been possible to download Zfone from the developer's website since the download server has gone offline. | milkshake721/2.1M-wiki-STEM |
Zfone-Platforms and specification-Availability – Mac OS X, Linux, and Windows as compiled programs as well as an SDK.
Encryption standards – Based on ZRTP, which uses 128- or 256-bit AES together with a 3072-bit key exchange system and voice-based verification to prevent man-in-the-middle attacks.
ZRTP protocol – Publi... | milkshake721/2.1M-wiki-STEM |
Quantcast File System-Quantcast File System-Quantcast File System (QFS) is an open-source distributed file system software package for large-scale MapReduce or other batch-processing workloads. It was designed as an alternative to the Apache Hadoop Distributed File System (HDFS), intended to deliver better performance ... | milkshake721/2.1M-wiki-STEM |
Quantcast File System-Design-QFS is software that runs on a cluster of hundreds or thousands of commodity Linux servers and allows other software layers to interact with them as if they were one giant hard drive. It has three components: A chunk server runs on each machine that will host data, manages I/O to its hard d... | milkshake721/2.1M-wiki-STEM |
Quantcast File System-Design-A central process called the metaserver keeps the directory structure and maps of files to physical storage. It coordinates activities of all the chunk servers and monitors the overall health of the file system. For high performance it holds all its data in memory, writing checkpoints and t... | milkshake721/2.1M-wiki-STEM |
Quantcast File System-Design-A client component is the interface point that presents a file system application programming interface (API) to other layers of the software. It makes requests of the metaserver to identify which chunk servers hold (or will hold) its data, then interacts with the chunk servers directly to ... | milkshake721/2.1M-wiki-STEM |
Quantcast File System-History-QFS evolved from the Kosmos File System (KFS), an open source project started by Kosmix in 2005. Quantcast adopted KFS in 2007, built its own improvements on it over the next several years, and released QFS 1.0 as an open source project in September, 2012. | milkshake721/2.1M-wiki-STEM |
BeGeistert-BeGeistert-BeGeistert is an annual (formerly semiannual) users' and developers' conference for the open source operating system Haiku.The conference usually takes place over a weekend in the autumn of each year in Düsseldorf, Germany. The programme typically consists of demonstrations by European software ve... | milkshake721/2.1M-wiki-STEM |
BeGeistert-History-BeGeistert originally started as a BeOS conference, playing an important part in its community. For example, developers and representatives of Be Europe and other important contributors attended the conference in the late 1990s. This history is reflected in the conference name, as the use of capitali... | milkshake721/2.1M-wiki-STEM |
BeGeistert-History-After the bankruptcy of Be Inc. caused the BeOS to be discontinued in the early 2000s, the conference was attended by representatives of the two projects deriving from the BeOS: ZETA, a closed source commercial initiative by yellowTAB based on the source code of an unreleased version of the BeOS, and... | milkshake721/2.1M-wiki-STEM |
BeGeistert-History-The conference is organized and partially funded by the Haiku Support Association e.V., formerly BeFAN e.V., and also supported by Haiku, Inc. Between 2004 and 2006, Haiku, Inc. also organized an official annual Haiku conference in various places in the United States under the name "WalterCon", which... | milkshake721/2.1M-wiki-STEM |
BeGeistert-Editions-In 1998, BeGeistert started as a one-day event, but became a two-day conference since BeGeistert 004, mostly taking place in April and October. As of 2013, the conference is held annually. | milkshake721/2.1M-wiki-STEM |
BeGeistert-Editions-Between 2000 and 2008, some conference weekends included coding challenges, which among others resulted in the first localizable version of OpenTracker. Since 2003, it is being organized in the City Youth Hostel in Düsseldorf's Oberkassel neighborhood, except during the youth hostel's reconstruction... | milkshake721/2.1M-wiki-STEM |
Igusa quartic-Igusa quartic-In algebraic geometry, the Igusa quartic (also called the Castelnuovo–Richmond quartic CR4 or the Castelnuovo–Richmond–Igusa quartic) is a quartic hypersurface in 4-dimensional projective space, studied by Igusa (1962).
It is closely related to the moduli space of genus 2 curves with level 2... | milkshake721/2.1M-wiki-STEM |
Partial inverse of a matrix-Partial inverse of a matrix-In linear algebra and statistics, the partial inverse of a matrix is an operation related to Gaussian elimination which has applications in numerical analysis and statistics. It is also known by various authors as the principal pivot transform, or as the sweep, gy... | milkshake721/2.1M-wiki-STEM |
Partial inverse of a matrix-Partial inverse of a matrix-Given an n×n matrix A over a vector space V partitioned into blocks: 11 12 21 22 ) If 11 is invertible, then the partial inverse of A around the pivot block 11 is created by inverting 11 , putting the Schur complement 11 in place of 22 , and adjusting the... | milkshake721/2.1M-wiki-STEM |
The Scent of the Roses-The Scent of the Roses-The Scent of the Roses is a novel by the American writer Aleen Leslie.The title comes from a line of a poem by Thomas Moore: "You may break, you may shatter the vase, if you will, But the scent of the roses will hang round it still." Set in 1908 Pittsburgh, Pennsylvania, th... | milkshake721/2.1M-wiki-STEM |
Blind write-Blind write-In computing, a blind write occurs when a transaction writes a value without reading it. Any view serializable schedule that is not conflict serializable must contain a blind write.
In particular, a write wi(X) is said to be blind if it is not the last action of resource X and the following acti... | milkshake721/2.1M-wiki-STEM |
GNU Units-GNU Units-GNU Units is a cross-platform computer program for conversion of units of quantities. It has a database of measurement units, including esoteric and historical units. This for instance allows conversion of velocities specified in furlongs per fortnight, and pressures specified in tons per acre. Outp... | milkshake721/2.1M-wiki-STEM |
GNU Units-History-GNU Units was written by Adrian Mariano as an implementation of the units utility included with the Unix operating system. It was originally available under a permissive license. The GNU variant is distributed under the GPL although the FreeBSD project maintains a free fork of units from before the li... | milkshake721/2.1M-wiki-STEM |
GNU Units-History-Version history GNU Units version 2.19 was released on 31 May 2019, to reflect the new 2019 revision of the SI; Version 2.14 released on 8 March 2017 fixed several minor bugs and improved support for building on Windows. Version 2.10, released on 26 March 2014, added support for rational exponents gre... | milkshake721/2.1M-wiki-STEM |
GNU Units-History-Version 2.02, released on 11 July 2013, added hexadecimal floating-point output and two other options to simplify changing the output format. | milkshake721/2.1M-wiki-STEM |
GNU Units-History-Version 2.0, released on 2 July 2012, added the ability to convert to sums of units, such as hours and minutes or feet and inches. In addition, this release added support for UTF-8 encoding. Provision for locale-specific unit definitions was added. The syntax for defining non-linear units was changed,... | milkshake721/2.1M-wiki-STEM |
GNU Units-History-The version history is covered in detail in the NEWS file included with the source distribution. | milkshake721/2.1M-wiki-STEM |
GNU Units-Usage-Units will output the result of the conversion in two lines. Usually, the first line (multiplication) is the desired result; the second line is the same conversion expressed as a division.
Units can also function as a general-purpose scientific calculator; it includes several built-in mathematical funct... | milkshake721/2.1M-wiki-STEM |
GNU Units-Examples-The examples that follow show results from GNU units version 2.10. | milkshake721/2.1M-wiki-STEM |
GNU Units-Examples-Interactive mode Currency exchange rates from www.timegenie.com on 2014-03-28 2729 units, 92 prefixes, 77 nonlinear units You have: 10 furlongs You want: miles * 1.25 / 0.8 You have: 1 gallon + 3 pints You want: quarts * 5.5 / 0.18181818 You have: sqrt(meter) Unit not a root You have: sqrt(acre) You ... | milkshake721/2.1M-wiki-STEM |
GNU Units-Examples-On the command line (non-interactive) Complex units expressions One form of the Darcy–Weisbach equation for fluid flow is ΔP=8π2ρfLQ2d5, where ΔP is the pressure drop, ρ is the mass density, f is the (dimensionless) friction factor, L is the length of the pipe, Q is the volumetric flow rate, and d is... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Moon Whistle-Moon Whistle (ムーンホイッスル, Mūn Hoissuru) is a Japanese language freeware role-playing video game created with RPG Tsukūru 95. Mainly made by Kōichirō Takaki (高木 幸一郎), also known as Kannazuki Sasuke (神無月サスケ), this game involves an adventure of a five-year-old kindergartner in a pseudo-Japanese cit... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Overview-Moon Whistle is a story-based role-playing game, featuring sprite characters and objects, 2D exploring maps, cutscene dialogues, and combats ― conventional fares of old-school role-playing games as a whole. The game's prominent feature is its setting; contrary to a regular save-the-world plot in a... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Overview-Basically its story revolves around a kindergarten-aged boy, Zenon (ぜのん), and his friends, while it also focuses on topics like alienation mainly from the viewpoint of another lead character, X Ranger (Xレンジャー). Zenon generally does not speak lines but with a few exceptions. The whole story is divi... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Gameplay-While unique in appearances, its gameplay is a customary one for a role-playing game; buying items in shops, equipping gadgets, random encounters, boss battles, leveling up, explorations, communicating with townspeople, and so forth. Its battle system is the default one of RPG Tsukūru 95 so that b... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Plot-Set in Motomachi Town (もとまちタウン), a fictional 1980s Japanese suburb, the story begins on Zenon's first school day following spring vacation. After school, he goes to a hill in the town together with Narumi looking for X-Ranger, a superhero in a children's TV show, who allegedly appears in Motomachi Tow... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Plot-Later Zenon and the gang happen to visit X-Ranger's hideout, and touch the panel of a giant machine sitting in there without his consent. Then they find themselves in a strange town, where they save Zeta (ツェータ) from Hart (ハルト), a spoiled mean child, and are befriended with him. Once prohibited to use ... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Plot-After some events, Zeta notices that Zenon's town is very similar to his, Motomachi City (もとまちシティ), and questions X-Ranger on it. He reveals that he is a 19-year-old Zenon who came from the future (Motomachi City) to his past (Motomachi Town) by a time machine in order to recover hopes and dreams of p... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Plot-In autumn, a new toy Rocket Monster (ロケットモンスター) has become a fad among kids in Motomachi City. However, suddenly one of them goes berserk, and it results in severe criticism to the product by parents. Zenon and his friends find out that it was plotted by Hart's father, who intended to damage the profi... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Plot-After the next year began, people in Motomachi City suddenly all got melancholic. Zenon and his friends investigate the case, and fight with X Ranger's shadow. After the battle, X-Ranger realizes that this world is not real and he in reality is presumably unconscious for an attempted suicide. Also, th... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Plot-Since Sphere was broken, Zenon was no longer able to access to the future. X-Ranger decides to return to his reality, and together with Zenon, visits the Realm of Time to challenge the Final Trial, in which X-Ranger faces his surrounding problems. At the end of the Trial, Volatilis' spirit awaits to k... | milkshake721/2.1M-wiki-STEM |
Moon Whistle-Off-shoots-As a spin-off of Moon Whistle, Another Moon Whistle: Kuzureteku Nyūdōgumo (アナザームーンホイッスル くずれてく入道雲, lit. "Another Moon Whistle: Collapsing Cumulonimbus") was released in April 2003, which, at that time, was developed by the use of RPG Tsukūru 2000.
Boku no Sumu Machi (ぼくのすむまち, literally; "A town w... | milkshake721/2.1M-wiki-STEM |
Fagin's theorem-Fagin's theorem-Fagin's theorem is the oldest result of descriptive complexity theory, a branch of computational complexity theory that characterizes complexity classes in terms of logic-based descriptions of their problems rather than by the behavior of algorithms for solving those problems. | milkshake721/2.1M-wiki-STEM |
Fagin's theorem-Fagin's theorem-The theorem states that the set of all properties expressible in existential second-order logic is precisely the complexity class NP. It was proven by Ronald Fagin in 1973 in his doctoral thesis, and appears in his 1974 paper. The arity required by the second-order formula was improved ... | milkshake721/2.1M-wiki-STEM |
Fagin's theorem-Proof-In addition to Fagin's 1974 paper, Immerman (1999) provides a detailed proof of the theorem. It is straightforward to show that every existential second-order formula can be recognized in NP, by nondeterministically choosing the value of all existentially-qualified variables, so the main part of t... | milkshake721/2.1M-wiki-STEM |
Fagin's theorem-Proof-A key lemma used in the proof is that it is possible to encode a linear order of length nk (such as the linear orders of timesteps and tape contents at any timestep) as a 2k -ary relation R on a universe A of size n . One way to achieve this is to choose a linear ordering L of A and then de... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Behavior tree-Behavior trees are a formal, graphical modelling language used primarily in systems and software engineering. Behavior trees employ a well-defined notation to unambiguously represent the hundreds or even thousands of natural language requirements that are typically used to express the stakeh... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Overview-The amount of detail in the large number of natural language requirements for a large-scale system causes short-term memory overload and may create a barrier that prevents anyone from gaining a deep, accurate and holistic understanding of the system needs. Also, because of the use of natural lang... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Overview-The behavior tree representation, (with the help of the composition tree representation that resolves alias and other vocabulary problems with large sets of requirements) allows people to avoid short-term memory overload and produce a deep, accurate, holistic representation of system needs that c... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Overview-Behavior tree forms Single and composite or integrated behavior tree forms are both important in the application of behavior trees in systems and software engineering.
Requirement behavior trees: Initially, individual requirement behavior trees (RBTs) are used to capture all the fragments of beha... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Overview-Integrated behavior trees: Because a set of requirements imply the integrated behavior of a system, all the individual requirement behavior trees can be composed to construct an integrated behavior tree (IBT) that provides a single holistic view of the emergent integrated behavior of the system. ... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Overview-Behavior engineering process Representation used – (critical)BEHAVIOR TREES provide a vehicle for growing a shared understanding of a complex system.
The role of the COMPOSITION TREE in the overall process is to provide a vehicle for overcoming the imperfect knowledge associated with the large se... | milkshake721/2.1M-wiki-STEM |
Behavior tree-History-Behavior trees and the concepts for their application in systems and software engineering were originally developed by Dromey with first publication of some of the key ideas in 2001. Early publications on this work used the terms "genetic software engineering" and "genetic design" to describe the ... | milkshake721/2.1M-wiki-STEM |
Behavior tree-History-Since the behavior tree notation was originally conceived a number of people from the DCCS (Dependable Complex Computer-based Systems Group – a joint University of Queensland, Griffith University research group) have made important contributions to the evolution and refinement of the notation and ... | milkshake721/2.1M-wiki-STEM |
Behavior tree-History-Probabilistic timed behavior trees have recently been developed by Colvin, Grunske and Winter so that reliability, performance and other dependability properties can be expressed. | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Behavior tree notation A behavior tree is used to formally represent the fragment of behavior in each individual requirement. Behavior for a large-scale system in general, where concurrency is admitted, appears abstractly as a set of communicating sequential processes. The behavior tree notat... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Behavior is expressed in terms of components realizing states and components creating and breaking relations. Using the logic and graphic forms of conventions found in programming languages, components can support actions, composition, events, control-flow, data-flow, and threads.Traceability... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-A behavior tree with leaf nodes may revert (symbolized by adding the caret operator ^) to an ancestor node to repeat behavior, or start a new thread (symbolized by two carets ^^).
A behavior tree specifies state changes in components, how data and control is passed between components and how ... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Requirements integration Once the set of requirements are formalized as individual requirement behavior trees, two joint properties of systems and requirements need to be exploited in order to proceed with composing the integrated behavior tree: In general, a fragment of behavior expressed by... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-If the requirement is really part of the system then some other requirement in the set must establish the precondition needed in (1).For requirements represented as behavior trees this amounts to finding where the root node of one tree occurs in some other behavior tree and integrating the tw... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Inspection: defect detection and correction In general, many defects become much more visible when there is an integrated view of the requirements and each requirement has been placed in the behavior context where it needs to execute. For example, it is much easier to tell whether a set of co... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Simulation A model behavior tree can be readily simulated to explore the dynamic properties of the system. Both a symbolic tool and a graphics tool have been constructed to support these activities.
Model-checking A translator has been written to convert a model behavior tree into the "action... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Failure mode and effects analysis (FMEA) Model-checking has often been applied to system models to check that hazardous states cannot be reached during normal operation of the system. It is possible to combine model-checking with behavior trees to provide automated support for failure mode an... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Requirements change The ideal that is sought when responding to a change in the functional requirements for a system is that it can be quickly determined: where to make the change, how the change affects the architecture of the existing system, which components of the system are affected by t... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-A traceability model, which uses behavior trees as a formal notation to represent functional requirements, reveals change impacts on different types of design constructs (documents) caused by the changes of the requirements. The model introduces the concept of evolutionary design documents th... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Code generation and execution The behavior tree representation of the integrated behavior of the system affords several important advantages as an executable model. It clearly separates the tasks of component integration from the task of individual component implementation. The integrated beh... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Behavior tree models are executed in a virtual machine called the behavior run-time environment (BRE). The BRE links together components using middleware, allowing components to be independent programs written in one of several languages that can be executed in a distributed environment. The ... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-The implementation of components is supported by views that are automatically extractable from the DBT. These views provide the component behavior trees (CBTs) of individual components together with the interfaces of individual components. This information, together with the information in th... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Key concepts-Several BRE's can be linked together to form complex systems using a system-of-systems construct and the behavior engineering component integration environment (BECIE). BECIE is also used to monitor and control the behavior tree models being executed within a BRE, similar to supervisory contr... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Applications-Behavior tree modelling can and has been applied to a diverse range of applications over a number of years. Some of the main application areas are described below. | milkshake721/2.1M-wiki-STEM |
Behavior tree-Applications-Large-scale systems Modeling large-scale systems with large sets of natural-language requirements have always been the major focus for trialling behavior trees and the overall behavior engineering process. Conducting these evaluations and trials of the method has involved work with a number o... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Applications-What all this work has consistently shown is that by translating requirements and creating dynamic and static integrated views of requirements a very significant number of major defects are discovered early, over and above the defects that are found by current industry best-practice. | milkshake721/2.1M-wiki-STEM |
Behavior tree-Applications-Embedded systems Failure of a design to satisfy a system's requirements can result in schedule and cost overruns. If there are also critical dependability issues, not satisfying system requirements can have life-threatening consequences. However, in current approaches, ensuring requirements a... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Applications-Hardware–software systems Many large-scale systems consist of a mixture of co-dependent software and hardware. The different nature of software and hardware means they are often modelled separately using different approaches. This can subsequently lead to integration problems due to incompati... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Applications-Role-based access control To ensure correct implementation of complex access control requirements, it is important that the validated and verified requirements are effectively integrated with the rest of the system. It is also important that the system can be validated and verified early in t... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Applications-Biological systems Because behavior trees describe complex behavior, they can be used for describing a range of systems not limited to those that are computer-based. In a biological context, BTs can be used to piece together a procedural interpretation of biological functions described in res... | milkshake721/2.1M-wiki-STEM |
Behavior tree-Applications-Game AI modeling While BTs have become popular for modeling the artificial intelligence in computer games such as Halo and Spore, these types of trees are very different from the ones described on this page, and are closer to a combination of hierarchical finite state machines or decision tre... | milkshake721/2.1M-wiki-STEM |
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