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Artificial Intelligence, 2008. MICAI '08. Seventh Mexican International Conference on

Date 27-31 Oct. 2008

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Displaying Results 1 - 25 of 77
  • [Front cover]

    Publication Year: 2008 , Page(s): C1
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  • [Title page i]

    Publication Year: 2008 , Page(s): i
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  • [Title page iii]

    Publication Year: 2008 , Page(s): iii
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  • [Copyright notice]

    Publication Year: 2008 , Page(s): iv
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  • Table of contents

    Publication Year: 2008 , Page(s): v - x
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  • Preface

    Publication Year: 2008 , Page(s): xi - xii
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  • Conference and Organizing Committees

    Publication Year: 2008 , Page(s): xiii
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  • Program Committee

    Publication Year: 2008 , Page(s): xiv
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  • Technical Reviewing Committee

    Publication Year: 2008 , Page(s): xv - xvii
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  • Co-Organizers, Sponsors, and Website Contacts

    Publication Year: 2008 , Page(s): xviii
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  • Integrating Subjective Knowledge Bases through an Extended Belief Game Model

    Publication Year: 2008 , Page(s): 3 - 8
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (221 KB) |  | HTML iconHTML  

    Belief merging is concerned with the integration of several not necessarily consistent belief bases such that a coherent belief base is developed as a result. Various belief merging models often consist of two key functions, namely: negotiation, and weakening. A negotiation function finds the weakest belief bases among the available belief bases, and then the selected belief bases concede based on... View full abstract»

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  • A Logic Formal Validation Model for the Explanations Generation in an Intelligent Assistant

    Publication Year: 2008 , Page(s): 9 - 14
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (850 KB) |  | HTML iconHTML  

    Given that users provided with explanations have a better performance than ones without them, we have developed an explanation generation mechanism based on the selection of the most relevant variable. However, explanations generated automatically by an intelligent assistant system (IAS) and those generated manually by a human expert could have inconsistences. In this work, we present a formal val... View full abstract»

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  • Facilitating Access Control at Groupwork by Means of an Ontology of Its Organizational Structure and Concept of Stage

    Publication Year: 2008 , Page(s): 17 - 22
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (314 KB) |  | HTML iconHTML  

    In the groupware applications one of the principal aims is to supply a common context, so the more information gets shared, the more easily common context can be achieved. However, the sharing of information in this type of applications leads to provide security mechanisms. Controlling the access to resources and activities is a key element in system security. In this paper, we focus in access con... View full abstract»

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  • Ontology-Based Knowledge Retrieval

    Publication Year: 2008 , Page(s): 23 - 28
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (133 KB) |  | HTML iconHTML  

    We deal with knowledge retrieval within the context of Virtual Learning Environment (VLE). A good VLE should deliver relevant learning materials to the learner at the most appropriate time to facilitate knowledge acquisition by Problem-Based Learning (PBL). In PBL, students should retrieve information about a problem by working in small groups with the guidance of a learning facilitator providing ... View full abstract»

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  • Syntactico-Semantic Analysis: A Hybrid Sentence Extraction Strategy for Automatic Summarization

    Publication Year: 2008 , Page(s): 31 - 36
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (203 KB) |  | HTML iconHTML  

    Automatic summarization systems often make use of sentence extraction methods to select significant content in texts. This paper presents two-sentence extraction strategies. The first one is based on a semantic analysis using word senses built by means of a network of lexical co-occurrences. The second one uses a combination of semantic and syntactical analysis to extract a set of relevant sentenc... View full abstract»

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  • Single Document Summarization Based on Local Topic Identification and Word Frequency

    Publication Year: 2008 , Page(s): 37 - 41
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (218 KB) |  | HTML iconHTML  

    In this task, an approach for single document summaries based on local topic identification and word frequency is proposed. In recent years, there has been increased interest in automatic summarization. The physical features are often used and have been successfully applied to this field; it also has some disadvantages of non-redundancy, structure and coherence. Therefore, we introduced logical st... View full abstract»

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  • Two-Level Clausal Segmentation System Based on Semantic Information for Automatic Summarization

    Publication Year: 2008 , Page(s): 42 - 47
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (172 KB) |  | HTML iconHTML  

    This paper suggests a method that breaks a long sentence into simple sentences using not only syntactical information but also a sense of a word. Unlike uniformed sentences, common sentences are often ambiguous and frequently omit particles thus they should be divided into simple sentences at semantic level. This study shows the method that analyzes the dependency structure between predicate and c... View full abstract»

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  • Measuring Lexical Cohesion in a Document

    Publication Year: 2008 , Page(s): 48 - 52
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (268 KB) |  | HTML iconHTML  

    Lexical Cohesion is one of the important features in text processing for analyzing document structure and improving the accuracy of text processing. We present a hierarchial graph based model to measure cohesion by grouping lexically cohesive units together in a text. Latent semantic analysis is used to construct a relational graph to uncover the hidden semantics from the text by discovering new r... View full abstract»

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  • Natural Language Processing Techniques for the Extraction of Semantic Information in Web Services

    Publication Year: 2008 , Page(s): 53 - 57
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (214 KB) |  | HTML iconHTML  

    With the increase in the number of Web services and the value they are taking, discovery of services that meet the criteria of users becomes a major challenge. Currently the discovery process lacks of well-defined semantics, therefore it is difficult to obtain the non explicit meaning of services, such as functionality. In order to provide an accurate solution to the problem described above, in th... View full abstract»

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  • Classic Chinese Automatic Question Answering System Based on Pragmatics Information

    Publication Year: 2008 , Page(s): 58 - 64
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (156 KB) |  | HTML iconHTML  

    In this paper, we propose a practical question answering system for the "Analects of Confucius" based on the pragmatics information. The "Analects of Confucius" is a classic Chinese literature by the Confucian during the Warring States Period (476 B.C-221 B.C ). But the literature can not be categorized by topics and it has comprehensive meanings, not only the literal meanings and explicitly commu... View full abstract»

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  • A Japanese Language Model with Quote Detection by Using Surface Information

    Publication Year: 2008 , Page(s): 65 - 71
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (213 KB)  

    In natural language processing, quotes are an important grammatical category which needs consideration. In this paper, we propose a Japanese language model that includes quotes as a category. The quotes are recognized by using surface information and dependencies between the words. Then, they are divided into direct and indirect speech. Finally, we extract the quotes and create a relation between ... View full abstract»

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  • Genetic Support Vector Classification and Feature Selection

    Publication Year: 2008 , Page(s): 75 - 81
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (276 KB) |  | HTML iconHTML  

    An important issue regarding the design of support vector machines (SVMs) is considered in this article, namely, the fine tuning of parameters in SVMs. This problem is tackled by using a self-adaptive genetic algorithm (GA). The same GA is used for feature selection. We validate our results implementing some statistical tests based on single domain benchmark data sets, which are used for compariso... View full abstract»

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  • Cascading Decomposition and State Abstractions for Reinforcement Learning

    Publication Year: 2008 , Page(s): 82 - 87
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (740 KB) |  | HTML iconHTML  

    Problem decomposition and state abstractions applied in the hierarchical problem solving often requires manual construction of a hierarchy structure in advance. This work is to provide some automatic algorithms for dimension reduction in problem solving. We propose cascading decomposition algorithm based on the spectral analysis on a normalized graph Laplacian to decompose the problem into several... View full abstract»

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  • Topic Calculation and Clustering: An Application to Wikipedia

    Publication Year: 2008 , Page(s): 88 - 93
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (180 KB) |  | HTML iconHTML  

    Wikipedia is nowadays one of the most valuable information resources; nevertheless, its current structure, which has no formal organization, does not allow to always have a useful browsing among topics. Moreover, even though most Wikipedia pages include a "See Also" section for navigating through those articles' related Wikipedia pages, the only references included here are those which authors are... View full abstract»

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  • Using Linguistic Information to Classify Portuguese Text Documents

    Publication Year: 2008 , Page(s): 94 - 100
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (301 KB) |  | HTML iconHTML  

    This paper examines the role of various linguistic structures on text classification applying the study to the Portuguese language. Besides using a bag-of-words representation where we evaluate different measures and use linguistic knowledge for term selection, we do several experiments using syntactic information representing documents as strings of words and strings of syntactic parse trees. To ... View full abstract»

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