"Agents and Artifacts" (A&A) and CARTAGO are becoming increasingly popular as, respectively, a general-purpose programming model and a related infrastructure for developing shared computational environme...
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Intelligent agents designed to work in complex, dynamic environments must respond robustly and flexibly to environmental and circumstantial changes. An agent must be capable of deliberating about appropriate courses o...
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Photomosaics are a new form of art in which smaller digital images (known as tiles) are used to construct larger images. Photomosaic generation not only creates interest in Hie digital arts area but has also attracted...
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ISBN:
(纸本)9783540896937
Photomosaics are a new form of art in which smaller digital images (known as tiles) are used to construct larger images. Photomosaic generation not only creates interest in Hie digital arts area but has also attracted interest in the area of evolutionary computing. the photomosaic generation process may be viewed as an arrangement optimisation problem, for a. given set of tiles and suitable target to be Solved using evolutionary computing. In this paper we assess two methods used to represent photomosaics, genetic algorithms (GAs) and genetic programming (GP), in terms of their flexibility and efficiency. Our results show that although both approaches sometimes use the same computational effort, GP is capable of generating finer photomosaics in fewer generations. In conclusion, we found that the GP representation is richer than the CA representation and offers additional flexibility for future photomosaics generation.
the use of centrifugal spreaders for application of granular fertilizers raises concern about application accuracy. these spreaders are capable of distributing fairly uniform deposits with regularly-spaced parallel tr...
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the use of centrifugal spreaders for application of granular fertilizers raises concern about application accuracy. these spreaders are capable of distributing fairly uniform deposits with regularly-spaced parallel tramlines but lead over and under fertilizer application when distances separating the successive tractor trajectories are not constant or if paths are not parallel between them. the aim of this study is to propose an optimisation-based method to compute optimal variables for uniform fertilizer application. Mechanical constraints are also introduced so that the calculated parameters can be afterwards used as reference variables for the control of the spreader. the resulting improvements are illustrated by numerical examples for a field with geometrical irregularities.
this paper presents a new modeling of elevator group intelligent scheduling system with destination floor guidance. the traditional input mode of separate hall call registration and the destination selection is improv...
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this paper presents a new modeling of elevator group intelligent scheduling system with destination floor guidance. the traditional input mode of separate hall call registration and the destination selection is improved to a single-input mode that makes the acquired ensemble of hall call communication more determinate and integrated. Meanwhile, the ensemble of hall call communication is regrouped and classified, the prediction algorithms of multi-objective evaluation items are proposed based on destination floor guidance, and Fuzzy Neural Network optimized by Genetic Algorithm is constructed and applied further to fulfill the matching scheduling scheme. Simulated results show that the optimized scheduling algorithm efficiently ameliorates the evaluation items and the scheduling system has the advantaged improvement for overall performance.
Feature ranking (FR) provides a measure of usefulness for the attributes of a classification task. Most existing FR. methods focus on the relevance of a single feature to the class labels. Here, we use GP to see how a...
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ISBN:
(纸本)9783540896937
Feature ranking (FR) provides a measure of usefulness for the attributes of a classification task. Most existing FR. methods focus on the relevance of a single feature to the class labels. Here, we use GP to see how a set of features can contribute towards discriminating different classes and then we score the participating features accordingly. the scoring mechanism is based on the frequency of appearance of each feature in a collection of GP programs and the fitness of those programs. Our results show that the proposed FR, method can detect important features of a problem. A variety of different classifiers restricted to just a few of these high-ranked features work well. the ranking mechanism can also shrink the search space of size O(2(n)) of subsets of features to a search space of size O(n) in which there are points that may improve the classification performance.
In this paper we present a high-level approach to programming applications which use the Grid from the client side. this study is devoted to resolving the need for a language that would allow expressing the applicatio...
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ISBN:
(纸本)9783540681052
In this paper we present a high-level approach to programming applications which use the Grid from the client side. this study is devoted to resolving the need for a language that would allow expressing the application logic in a precise way and combining it withthe capability of remote access to powerful Grid resources and complex computational software. We introduce the concept of a universal Grid client - a Grid Operation Invoker (GOI). It provides a client-side interface to computational resources that use various middleware packages within a high-level scripting language. the system prototype is written in JRuby [1] which is a Java implementation of a popular object-oriented scripting language interpreter - Ruby [2]. We also present issues that have emerged in the course of work on GOI and which we have found challenging. Finally, we discuss Grid applications implemented in JRuby, proving that GOI can be used to solve highly complicated and computationally-intensive problems.
In 1984, John Hughes wrote a seminal paper titled, "Why functionalprogramming Matters," in which he eloquently explained the value of pure and lazy functionalprogramming. Due to the increasing importance o...
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ISBN:
(纸本)9781605582672
In 1984, John Hughes wrote a seminal paper titled, "Why functionalprogramming Matters," in which he eloquently explained the value of pure and lazy functionalprogramming. Due to the increasing importance of the Web and the introduction of many-core machines, in the quarter of a century since the paper was written, the problems associated with imperative languages and their side effects have become increasingly evident. this talk argues that fundamentalist functionalprogramming-that is, radically eliminating all side effects from programming languages, including strict evaluation-is what it takes to conquer the concurrency and parallelism dragon. Programmers must embrace pure, lazy functionalprogramming "all the way"-with all effects apparent in the type system of the host language using monads. A radical paradigm shift is the answer, but does that mean that all current programmers will be lost along the way? Fortunately not! By design, LINQ is based on monadic principles, and the success of LINQ proves that the world does not fear the monads.
Multi-robot systems are becoming increasingly prevalent, but programmability is a major barrier to their deployment. Present systems force programmers to think in terms of individual agents. Application code becomes e...
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this paper describes a branch-and-cut procedure for an extension of the bounded colouring problem, generally known as curriculum-based university course timetabling. In particular, we focus on Udine Course Timetabling...
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