AI Communications - Volume 29, issue 2

Authors: Devi Priya, R.

Article Type: Other

Abstract: Databases often contain missing values caused in different scenarios. Even though many methods are available to treat such missing values, they are specific to only certain types of missingness and are not commonly applicable to all scenarios. To address this issue, this thesis proposes a novel technique called Bayesian Genetic Algorithm (BAGEL) which combines both Bayesian principles and Genetic Algorithm to impute values in different kinds of missing scenarios and different kinds of attributes in mixed attribute datasets.

Keywords: Bayesian Genetic Algorithm, mixed attribute datasets

DOI: 10.3233/AIC-150660

Citation: AI Communications, vol. 29, no. 2, pp. 395-396, 2016

Authors: Hernández, Inma

Article Type: Other

Abstract: Integrating a web application into an automated business process requires to design wrappers that get user queries as input and map them onto the search forms that the application provides. Such wrappers build on automatic navigators which are responsible for navigating to the pages that provide the information required to answer the original user queries. A navigator relies on a web page classifier that discerns which pages provide the information and which do not. In the literature, there are many proposals to classify web pages, but none of them fulfills the requirements for a web page classifier in a navigator …context. We address the problem of designing an unsupervised web page classifier that builds solely on the information provided by the URLs and does not require extensive crawling of the site being analysed. Our contribution is CALA, a new automated proposal to generate URL-based web page classifiers. Its salient features are that it does not need to previously crawl the complete web site, it is unsupervised, it does not require to download a page before classifying it, and it is computationally tractable. It has been validated by a number of experiments using real-world, top-visited web sites. Show more

Keywords: Web page classification, navigation, crawling

DOI: 10.3233/AIC-150670

Citation: AI Communications, vol. 29, no. 2, pp. 397-399, 2016

Authors: Huergo, Pelayo Nuño | Granda Candás, Juan Carlos

Article Type: Other

Abstract: This thesis is focused on the study of the Autonomic Computing (AC) paradigm within the scope of Multimedia Communication Systems (MCSs). Specifically, it analyzes the set of autonomic properties and identifies the properties that can be observed in MCSs, specially those suitable to be implemented in a synchronous e-learning platform. Based on this analysis, the aim of this thesis is to design a self-managed multimedia distribution platform for developing synchronous e-learning activities, providing an efficient data delivery service and minimizing the required human intervention. The self-healing and self-optimization techniques of this platform use heuristics to select optimal data distribution paths …is spite of failures and member joining and leaving. Show more

Keywords: Autonomic computing, self-*, synchronous, e-learning

DOI: 10.3233/AIC-150663

Citation: AI Communications, vol. 29, no. 2, pp. 401-403, 2016

Authors: Moguillansky, Martín O.

Article Type: Other

Abstract: Reasoning and change over inconsistent ontologies (i-ont(s)) is of utmost relevance in sciences like medicine and law. Argumentation may be an appropriate formalism to cope with both problems: (reasoning ) through an Argumentation Framework (AF ) constructed from the i-ont, and (change ) by handling the dynamics of its arguments. We propose a new family of abstract AF s referred as generalized (GenAF ), due to its ability of adapting to different representation languages. Afterwards, we propose a possible instantiation of the GenAF ’s abstract language for arguments to the basic ALC …description logic for reasoning over i-onts. For dynamics of arguments, a revision operation modifies the graph of arguments in an AF for provoking the argumentation semantics to accept an argument. Thus, revising an ALC -GenAF would introduce a novel methodology for handling evolution of i-onts. To such end, we propose a revision operation by relying upon classic belief revision theory, although contrary to it, consistency restoration is avoided in order to handle evolution with inconsistency tolerance. Show more

Keywords: Belief revision, argumentation, dynamics of arguments, dynamics of knowledge, description logics, inconsistency tolerance, ontology evolution

DOI: 10.3233/AIC-150662

Citation: AI Communications, vol. 29, no. 2, pp. 405-407, 2016