this paper proposes a query routing infrastructure that aims at the Wet) text information retrieval. the routing information is distributed in each query routing node, and needs no central infrastructure, so it can be...
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ISBN:
(纸本)354025207X
this paper proposes a query routing infrastructure that aims at the Wet) text information retrieval. the routing information is distributed in each query routing node, and needs no central infrastructure, so it can be used in large distributed system to determine which node need to be queried to achieve the function of query routing in semantic network. At the same time, this paper proposes the concept of preference circle, which organizes web text data sources efficiently, so querying the information for routing become simpler and easier for maintenance, which improves the efficiency of query routing. In addition, we demonstrate the advantages of our system in work load balancing and the completeness of result of query etc.
Ontologies are often seen as basic building blocks for the semantic web, as they provide a shared and reusable piece of knowledge about a specific domain. Withthe rapid development of semantic web, the scale and comp...
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ISBN:
(纸本)354025207X
Ontologies are often seen as basic building blocks for the semantic web, as they provide a shared and reusable piece of knowledge about a specific domain. Withthe rapid development of semantic web, the scale and complexity of ontologies grow fast. the construction of large-scale ontologies will involve collaborative efforts of multiple developers. However, collaborative construction of ontologies is a complicated task. this paper discusses the challenging issues in collaborative ontology development, gives an overview of the related technologies and proposes a practical role-based collaborative development method, named RCDM. According to it, a pyramidal taxonomy of roles is adopted to divide ontology developers into different roles. Developers serving as different roles work collaboratively to construct a large-scale ontology, and a weighted statistical algorithm is adopted to solve conflicts led by different opinions. Compared with existing methods, RCDM is more suitable to large-scale ontology development, and does well in developers management, concurrency control, and conflicts resolution. It integrates wisdoms of different kinds of developers, no matter whether they are domain experts or not.
this paper presents how conversations are integrated into web services composition. While much of the recent work on web services has focussed on low-level standards for publishing, discovering, and triggering them, t...
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OLAP (On-Line Analytical Processing) systems are used to support decision-making processes by providing agile analytical operations on large amounts of data. Usually, the operations require dimensions to be onto and c...
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ISBN:
(纸本)354025207X
OLAP (On-Line Analytical Processing) systems are used to support decision-making processes by providing agile analytical operations on large amounts of data. Usually, the operations require dimensions to be onto and covering;however, in real-world applications, many dimensions fail to meet the requirements, which can be non-covering, non-onto or self-into. In this paper, we will mainly concern the transforming of non-covering dimensions;we first define four different types of non-covering dimensions, and then devise several algorithms to transform them into covering ones respectively. the algorithms are of low computational complexity and can provide full support for transforming various non-covering dimensions into covering ones correctly.
Client-side caching of spatial data is an important yet very much under investigated issue. Effective caching of vector spatial data. has the potential to greatly improve the performance of spatial applications in the...
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ISBN:
(纸本)354025207X
Client-side caching of spatial data is an important yet very much under investigated issue. Effective caching of vector spatial data. has the potential to greatly improve the performance of spatial applications in the web and wireless environments. In this paper, we study the problem of semantic spatial caching, focusing on effective organization of spatial data and spatial query trimming to take advantage of cached data. Semantic caching for spatial data is a much more complex problem than semantic caching for aspatial data. Several novel ideas are proposed in this paper for spatial applications. A number of typical spatial application scenarios are used to generate spatial query sequences. An extensive experimental performance study is conducted based on these scenarios using real spatial data. We demonstrate a significant performance improvement using our ideas.
Most existing algorithms cluster highly correlated data objects (e.g. web pages and web queries) separately. Some other algorithms, however, do take into account the relationship between data objects, but they either ...
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ISBN:
(纸本)354025207X
Most existing algorithms cluster highly correlated data objects (e.g. web pages and web queries) separately. Some other algorithms, however, do take into account the relationship between data objects, but they either integrate content and link features into a unified feature space or apply a hard clustering algorithm, making it difficult to fully utilize the correlated information over the heterogeneous web objects. In this paper, we propose a novel unified probabilistic framework for iteratively clustering correlated heterogeneous data objects until it converges. Our approach introduces two latent clustering layers, which serve as two mixture probabilistic models of the features. In each clustering iteration we use EM (Expectation-Maximization) algorithm to estimate the parameters of the mixture model in one latent layer and propagate them to the other one. the experimental results show that our approach effectively combines the content and link features and improves the performance of the clustering.
As web pages are created, destroyed, and updated dynamically, web databases should be frequently updated to keep web pages up-to-date. Understanding the change behavior of web pages certainly helps the administrators ...
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Recommender systems using collaborative filtering are a popular technique for reducing information overload and finding products. In this paper, we present a reliability-based WWW collaborative recommender system IWWS...
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ISBN:
(纸本)354025207X
Recommender systems using collaborative filtering are a popular technique for reducing information overload and finding products. In this paper, we present a reliability-based WWW collaborative recommender system IWWS (Intelligent web Wizard System), mainly aiming to attack so-called "Matchmaker" problem in collaborative filtering. the "Matchmaker" problem steins from false assumptions that users are counted only by their similarity and high similarity means good advisers. In order to find good advisers for every user, we construct a matchmaker's reliability mode based on the algorithm deriving from Hits, and apply it in IWWS. Comparative experimental results also show that IWWS contrastively improves performance.
web users use search engine to find useful information on the Internet. However current web search engines return answer to a query independent of specific user information need. Since web users with similar web behav...
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Essential to an audience driven website design philosophy is the organization of information and functionality according to the requirements of the different audience classes. However, at design time, it is often diff...
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ISBN:
(纸本)354025207X
Essential to an audience driven website design philosophy is the organization of information and functionality according to the requirements of the different audience classes. However, at design time, it is often difficult to correctly assess the different needs and requirements of the different prospective users of a website. this may result in a non-optimal navigation structure, which will decrease the usability of the website. In this paper, we describe how to correct, at run-time and automatically, possible flaws in the design resulting from incomplete requirement assessment, using adaptive behavior. By observing the browsing behavior of the users, the requirements for the different users are validated and the website is adapted according to adaptation specifications made by the designer. these specifications express when and how the website needs to be adapted and are expressed using an Adaptation Specification Language. the work is presented in the context of an audience driven design method but we also elaborate shortly on the applicability of the technique in general.
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