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Tools with Artificial Intelligence, Proceedings of the 13th International Conference on

Date 7-9 Nov. 2001

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Displaying Results 1 - 25 of 46
  • Proceedings 13th IEEE International Conference on Tools with Artificial Intelligence. ICTAI 2001

    Publication Year: 2001
    Request permission for commercial reuse | PDF file iconPDF (71 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 2001, Page(s): 351
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    Freely Available from IEEE
  • Artificial neural networks in hydrological watershed modeling: surface flow contribution from the ungaged parts of a catchment

    Publication Year: 2001, Page(s):367 - 374
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (647 KB) | HTML iconHTML

    Watershed modeling is often faced with the difficulty of determining the flow contribution from the ungaged sections of the catchment. Where the main concern is making accurate streamflow forecasts at specific watershed locations, it is cost-effective and efficient to implement a simple system theoretic model. In this paper Artificial Neural Networks (ANNs) are used as system theoretic models to m... View full abstract»

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  • Generation of propagation rules for intentionally defined constraints

    Publication Year: 2001, Page(s):236 - 243
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (97 KB) | HTML iconHTML

    A general approach to implement propagation and simplification of constraints consists of applying rules over these constraints. However, a difficulty that arises frequently when writing a constraint solver is to determine the constraint propagation algorithm. In previous work, different methods for automatic generation of propagation rules for constraints defined over finite domains have been pro... View full abstract»

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  • New hybrid method for solving constraint optimization problems in anytime contexts

    Publication Year: 2001, Page(s):325 - 332
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (102 KB) | HTML iconHTML

    This paper describes a new hybrid method for solving constraint optimization problems in anytime contexts. We use the valued constraint satisfaction problem (VCSP) framework to model numerous discrete optimization problems. Our method (VNS/LDS+CP) combines a variable neighborhood search (VNS) scheme with limited discrepancy search (LDS) using constraint propagation (CP) to evaluate cost and legali... View full abstract»

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  • Maximizing paper spread in examination timetabling using a vehicle routing method

    Publication Year: 2001, Page(s):359 - 366
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (218 KB) | HTML iconHTML

    One of the desirable attributes of real-life examination timetabling solutions is the maximization of paper spread, which is a measure of the amount of study time that each student has between examinations. We make use of the push-forward insertion heuristic (PFIH), a technique commonly employed in the vehicle routing problem, to find timetable solutions that maximize paper spread. This is done by... View full abstract»

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  • Smart cars as autonomous intelligent agents

    Publication Year: 2001, Page(s):25 - 32
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (322 KB) | HTML iconHTML

    This paper presents a study on the behavior of smart cars by considering them as autonomous intelligent agents. In particular, a smart car could behave as autonomous agent by extracting information from the surrounding environment (road, highway) and determining its position in it, detecting the motion and tracking the behavioral patterns of other moving objects (automobiles) in its own surroundin... View full abstract»

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  • Visualization support for user-centered model selection in knowledge discovery in databases

    Publication Year: 2001, Page(s):228 - 235
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (135 KB) | HTML iconHTML

    The process of knowledge discovery in databases inherently consists of several steps that are necessarily iterative and interactive. In each application, to go through this process the user has to exploit different algorithms and their settings that usually yield different discovered models. The selection of appropriate discovered models or algorithms to achieve such models, referred to as model s... View full abstract»

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  • An on-line repository for embedded software

    Publication Year: 2001, Page(s):314 - 321
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (117 KB) | HTML iconHTML

    The use of off-the-shelf components (COTS) can significantly reduce the time and cost of developing large-scale software systems. However, there are some difficult problems with the component-based approach. First, the developers have to be able to effectively retrieve components. This requires the developers to have an extensive knowledge of available components and how to retrieve them. After id... View full abstract»

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  • Maintaining credible dialogs in a VideoBot system with special audio techniques

    Publication Year: 2001, Page(s):351 - 358
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (66 KB) | HTML iconHTML

    An approach to using actual audio and video clips of real humans to construct artificial, conversational agents and bots is presented. This approach differs from other schemes focusing on believable, emotional, intelligent agents and bots in that it begins with real human subjects but constructs artificial behaviors and interactions with human users as opposed to beginning with artificial characte... View full abstract»

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  • Resource coordination in single agent and multiagent systems

    Publication Year: 2001, Page(s):18 - 24
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (189 KB) | HTML iconHTML

    An intelligent multiagent system includes a number of software agents interacting to solve a problem. Various agents are responsible for planning different tasks. These tasks must be coordinated to solve complex problems. A number of reasons exist for which coordination among the agents is necessary, and numerous issues have to be tackled to achieve efficient coordination. The focus of this paper ... View full abstract»

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  • Mining first-order knowledge bases for association rules

    Publication Year: 2001, Page(s):218 - 227
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (327 KB) | HTML iconHTML

    Data mining from relational databases has recently become a popular way of discovering hidden knowledge. Methods such as association rules, chi square rules, ratio rules, implication rules, etc. that have been proposed in several contexts offer complimentary choices in rule induction in this model. Other than inductive and abductive logic programming, research into data mining from knowledge bases... View full abstract»

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  • Data flow coherence criteria in ILP tools

    Publication Year: 2001, Page(s):179 - 186
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (68 KB) | HTML iconHTML

    In this paper we present a new method that uses data flow coherence criteria in definite logic program generation. We outline three main advantages of these criteria supported by our results: (i) drastically pruning the search space (around 90%), (ii) reducing the set of positive examples and reducing or even removing the need for the set of negative examples, and (iii) allowing the induction of p... View full abstract»

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  • COREFDRAW: a tool for annotation and visualization of coreference data

    Publication Year: 2001, Page(s):273 - 279
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (84 KB) | HTML iconHTML

    In Natural Language Processing, coreference resolution involves finding antecedents of referential expressions (e.g. pronouns or some definite nominals). The resolution of coreference depends on a combination of salience, syntactic, semantic and discourse constraints. The acquisition of such knowledge is difficult and could certainly benefit from a visualization tool, enabling the linguist researc... View full abstract»

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  • SHAMASH. An AI tool for modelling and optimizing business processes

    Publication Year: 2001, Page(s):306 - 313
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (130 KB) | HTML iconHTML

    In this paper we describe SHAMASH, a tool for modeling and automatically optimizing Business Processes. The main features that differentiate it from most current related tools are its ability to define and use organisation standards, and functional structure, and make automatic model simulations and optimisation of them. SHAMASH is a knowledge based system, and we include a discussion on how knowl... View full abstract»

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  • Successive search method for valued constraint satisfaction and optimization problems

    Publication Year: 2001, Page(s):341 - 347
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (202 KB) | HTML iconHTML

    In this paper we introduce a new method based on Russian Doll Search (RDS) for solving optimization problems expressed as Valued Constraint Satisfaction Problems (VCSPs). The RDS method solves problems of size n (where n is the number of variables) by replacing one search by n successive searches on nested subproblems using the results of each search to produce a better lower bound. The main idea ... View full abstract»

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  • Transaction oriented computational models for multi-agent systems

    Publication Year: 2001, Page(s):11 - 17
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (48 KB) | HTML iconHTML

    BDI (Belief, Desire, Intention) is a mature and commonly adopted architecture for intelligent agents. However, the current computational model adopted by BDI has a number of problems with concurrency control, recoverability and predictability. This has hindered the construction of agents having robust and predictable behaviour. Indeed the conceptual and practical tools needed for building dependab... View full abstract»

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  • Developing collaborative Golog agents by reinforcement learning

    Publication Year: 2001, Page(s):195 - 202
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (83 KB) | HTML iconHTML

    We consider applications where agents have to cooperate without any communication taking place between them, apart from the fact that they can see part of the environment in which they act. We present a multi-agent system, defined in Golog, that needs to service tasks whose value degrades in time. Initial plans, reflecting prior knowledge about the environment, are expressed as Golog procedures, a... View full abstract»

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  • Empirical study of a stacking state-space

    Publication Year: 2001, Page(s):210 - 217
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (67 KB) | HTML iconHTML

    Nowadays, there is no doubt that machine learning techniques can be successfully applied to data mining tasks. Currently, the combination of several classifiers is one of the most active fields within inductive machine learning. Examples of such techniques are boosting, bagging and stacking. From these three techniques, stacking is perhaps the less used one. One of the main reasons for this relate... View full abstract»

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  • Parallel genetic programming for decision tree induction

    Publication Year: 2001, Page(s):129 - 135
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB) | HTML iconHTML

    A parallel genetic programming approach to induce decision trees in large data sets is presented. A population of trees is evolved by employing the genetic operators and every individual is evaluated by using a fitness function based on the J-measure. The method is able to deal with large data sets since it uses a parallel implementation of genetic programming through the grid model and an out of ... View full abstract»

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  • Automatic knowledge acquisition from subject matter experts

    Publication Year: 2001, Page(s):69 - 78
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (787 KB) | HTML iconHTML

    This paper presents current results in developing a practical approach, methodology and tool, for the development of knowledge bases and agents by subject matter experts, with limited assistance from knowledge engineers. This approach is based on mixed-initiative reasoning that integrates the complementary knowledge and reasoning styles of a subject matter expert and a learning agent, and on a div... View full abstract»

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  • An effective method for generating multiple linear regression rules from artificial neural networks

    Publication Year: 2001, Page(s):171 - 178
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (209 KB) | HTML iconHTML

    We describe a method for multivariate function approximation which combines neural network learning, clustering and multiple regression. Neural networks with a single hidden layer are universal function approximators. However, due to the complexity of the network topology and the nonlinear transfer function used in computing the activation of the hidden units, the predictions of a trained network ... View full abstract»

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  • Towards a general theory for qualitative space

    Publication Year: 2001, Page(s):111 - 118
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (214 KB) | HTML iconHTML

    Finding ways for defining the complete and sound (physically plausible) set of relationships between spatial objects is a pre-requisite for the development and realization of qualitative representation and reasoning formalisms. Establishing the set of sound relationships is a complicated task especially when complex objects are considered. Hence, current approaches to qualitative representation an... View full abstract»

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  • A robust model for intelligent text classification

    Publication Year: 2001, Page(s):265 - 272
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (106 KB) | HTML iconHTML

    Methods for taking into account linguistic content into text retrieval are receiving growing attention. Text categorization is an interesting area for evaluating and quantifying the impact of linguistic information. Work on text retrieval through the Internet suggests that embedding linguistic information at a suitable level within traditional quantitative approaches is the crucial issue able to b... View full abstract»

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  • Using software agents to avoid collisions among multiple robots

    Publication Year: 2001, Page(s):50 - 57
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (68 KB) | HTML iconHTML

    The paper describes a method where collaborative software agents are used to coordinate the independently planned trajectories of multiple mobile robots to avoid collisions and deadlocks among them. Whenever the distance between two robots drops below a certain value, the agents exchange information about the planned trajectories of the robots and determine whether they are in danger of a collisio... View full abstract»

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