Semantic web languages

Web Ontology Language: OWL Expressivity RDF và RDF Schema mà chúng tôi mô tả trong chương trước là cố ý rất hạn chế: RDF là (khoảng) giới hạn các vị mặt đất nhị phân, và RDF Schema là (khoảng) giới hạn trong một hệ thống phân cấp phân lớp và hệ thống phân cấp một tài sản, với tên miền và phạm vi định nghĩa của các đặc tính này. Tuy nhiên, Nhóm làm việc của Web Ontology W3C1 xác định một số trường hợp đặc điểm sử dụng Semantic Web sẽ yêu cầu biểu cảm hơn nhiều so với...

41p hoatuongvihong 06-11-2011 80 15   Download

am delighted to see a book on multimedia semantics covering metadata, analysis, and interaction edited by three very active researchers in the field: Troncy, Huet, and Schenk. This is one of those projects that are very difficult to complete because the field is advancing rapidly in many different dimensions. At any time, you feel that many important emerging areas may not be covered well unless you see the next important conference in the field. A state of the art book remains a moving, often elusive, target. But this is only a part of the dilemma.

329p hotmoingay3 09-01-2013 43 3   Download

We develop a new Web ontology rule language, called WORL, which combines a variant of OWL 2 RL with eDatalog¬. We allow additional features like negation, the minimal number restriction and unary external checkable predicates to occur at the left-hand side of concept inclusion axioms. Some restrictions are adopted to guarantee a translation into eDatalog¬.

13p vititan2711 13-08-2019 5 0   Download

Ultimate mashup – Các dịch vụ Web và Web ngữ nghĩa (semantic Web), Phần 3: Hiểu về RDF và ngôn ngữ lược đồ RDF Tóm tắt: Sức mạnh của Ultimate mashup là trí tuệ mà bạn phát triển bằng cách sử dụng các kỹ thuật Web ngữ nghĩa, đặc biệt là Web ngôn ngữ bản thể luận (Web Ontology Language - OWL). Nhưng trước khi bạn có thể sử dụng OWL, bạn cần quen với ngôn ngữ cơ bản của chương trình này, đó là Resource Description Framework (RDF) và RDF Schema Language (RDFs). Hướng dẫn này sẽ cung cấp...

54p hoa_kimngan 13-09-2011 120 45   Download

Adaptive Information Extraction systems (IES) are currently used by some Semantic Web (SW) annotation tools as support to annotation (Handschuh et al., 2002; Vargas-Vera et al., 2002). They are generally based on fully supervised methodologies requiring fairly intense domain-specific annotation. Unfortunately, selecting representative examples may be difficult and annotations can be incorrect and require time. In this paper we present a methodology that drastically reduce (or even remove) the amount of manual annotation required when annotating consistent sets of pages. ...

4p bunthai_1 06-05-2013 32 2   Download

A regular user of a semantic search system frequently posses no knowledge about the SPARQL language nor about the ontology of a given knowledge base, especially when it provides domain-unspecific data obtained from heterogeneous sources. Nevertheless, he/she should be provided with tools enabling both intuitive and effective exploration of RDF-compliant knowledge bases.

9p vititan2711 13-08-2019 9 0   Download

The objective of W3C is to transform the current Web into a Semantic Web to reuse the previous system. Many previous systems were built based on the ER model, so the upgradation and transformation of the ER model into ontology in order to reduce cost is really necessary.

20p viconandoyle2711 29-08-2019 10 0   Download

Enormous amount of available data in relational database (RDB) format creates a demand for automatic transforming them into Web Ontology Language (OWL) ontology to reuse in the Semantic Web. Many approaches have been proposed, however, most of them simply generate output ontology as the same flat structure with the original database and result in redundancy of ontology data.

12p viconandoyle2711 29-08-2019 5 0   Download

Semantics is the research area touching the diversified domains such as: Philosophy, Information Science, Linguistics, Formal Semantics, Philosophy of Language and its constructs, Query Processing, Semantic Web, Pragmatics, Computational Semantics, Programming Languages, and Semantic Memory etc. The current book is a nice blend of number of great ideas, theories, mathematical models, and practical systems in diversified domains.

296p bi_bi1 09-07-2012 69 9   Download

Web 3.0 or Semantic Web is known as web evolution in which web content can be expressed in natural language and in an easy form that can be understood, interpreted and used by software agents in finding, sharing and integrating information more easily and conveniently as never before. John Markoff, a journalist from the New York Times first coined this term in 2006 which later came in practice. As an effective web development and a sequel to web 2.0, web 3.0 is a third generation Internet based service that gives you an added advantage of the internet technology....

16p taurus23 26-09-2012 56 7   Download

News flash: the web is kind of a Big Deal. It is difficult to consider its full impact on technology, society, commerce, education, governance, and entertainment without resorting to grand language that has been stated many times before. It is a Big Deal and we will never be the same because of it. But, here’s the thing. If we sat down and tried to rebuild the web today, knowing what we know from 20 years of experience with it, we would probably fail. The problem is that as software developers, we generally think in terms of software constructs: objects, services, methods, etc.

462p hotmoingay3 09-01-2013 46 5   Download

This is a system demo for a set of tools for translating texts between multiple languages in real time with high quality. The translation works on restricted languages, and is based on semantic interlinguas. The underlying model is GF (Grammatical Framework), which is an open-source toolkit for multilingual grammar implementations. The demo will cover up to 20 parallel languages. Two related sets of tools are presented: grammarian’s tools helping to build translators for new domains and languages, and translator’s tools helping to translate documents. ...

6p hongdo_1 12-04-2013 29 2   Download

An important and well-studied problem is the production of semantic lexicons from a large corpus. In this paper, we present a system named ASIA (Automatic Set Instance Acquirer), which takes in the name of a semantic class as input (e.g., “car makers”) and automatically outputs its instances (e.g., “ford”, “nissan”, “toyota”). ASIA is based on recent advances in webbased set expansion - the problem of finding all instances of a set given a small number of “seed” instances. This approach effectively exploits web resources and can be easily adapted to different languages. ...

9p hongphan_1 14-04-2013 29 2   Download

This paper presents a novel type of intelligent agent with a multilingual natural language interface, which retrieves information from within a Web site. This agent, named JaBot after the fact that it is a bot which has been programmed in Java, has been designed and developed by the authors in an attempt to solve common Web site problems related to information retrieval. JaBot runs quickly and efficiently, and rather than running directly on the Web site pages, it is connected to a lexical semantic map. This map is based upon the contents of the Web site in question together...

5p bunrieu_1 18-04-2013 36 2   Download

Named Entity Extraction is a mature task in the NLP field that has yielded numerous services gaining popularity in the Semantic Web community for extracting knowledge from web documents. These services are generally organized as pipelines, using dedicated APIs and different taxonomy for extracting, classifying and disambiguating named entities. Integrating one of these services in a particular application requires to implement an appropriate driver. Furthermore, the results of these services are not comparable due to different formats.

4p bunthai_1 06-05-2013 31 2   Download

Data-driven approaches in computational semantics are not common because there are only few semantically annotated resources available. We are building a large corpus of public-domain English texts and annotate them semi-automatically with syntactic structures (derivations in Combinatory Categorial Grammar) and semantic representations (Discourse Representation Structures), including events, thematic roles, named entities, anaphora, scope, and rhetorical structure. We have created a wiki-like Web-based platform on which a crowd of expert annotators (i.e.

5p bunthai_1 06-05-2013 37 2   Download

We introduce the brat rapid annotation tool (BRAT), an intuitive web-based tool for text annotation supported by Natural Language Processing (NLP) technology. BRAT has been developed for rich structured annotation for a variety of NLP tasks and aims to support manual curation efforts and increase annotator productivity using NLP techniques.

6p bunthai_1 06-05-2013 44 2   Download

We demonstrate an information credibility analysis system called WISDOM. The purpose of WISDOM is to evaluate the credibility of information available on the Web from multiple viewpoints. WISDOM considers the following to be the source of information credibility: information contents, information senders, and information appearances. We aim at analyzing and organizing these measures on the basis of semantics-oriented natural language processing (NLP) techniques.

4p hongphan_1 15-04-2013 30 1   Download

This paper presents an approach for the automatic acquisition of qualia structures for nouns from the Web and thus opens the possibility to explore the impact of qualia structures for natural language processing at a larger scale. The approach builds on earlier work based on the idea of matching specific lexico-syntactic patterns conveying a certain semantic relation on the World Wide Web using standard search engines. In our approach, the qualia elements are actually ranked for each qualia role with respect to some measure. ...

8p hongvang_1 16-04-2013 32 1   Download

This paper discusses the challenges and proposes a solution to performing information retrieval on the Web using Chinese natural language speech query. The main contribution of this research is in devising a divide-and-conquer strategy to alleviate the speech recognition errors. It uses the query model to facilitate the extraction of main core semantic string (CSS) from the Chinese natural language speech query.

8p bunbo_1 17-04-2013 37 1   Download