extracting hypernym pairs from the web

... collect- ing hypernym relations from the web. We compare our approach with hypernym ex- traction from morphological clues and from large text corpora. We show that the abun- dance of available data on the ... reason, we are interested in em- ploying the web for the extraction of hypernym re- lations. We are especially curious about whether the size of the web allows to achieve meaningful results with ... in the two web ex- periments and a combination of the best web ap- proach with the morphological approach. The con- junctive web pattern N en N rates best, because of its high frequency. The...

Ngày tải lên: 17/03/2014, 04:20

Ngày tải lên: 23/03/2014, 16:20

... each kind. These patterns are the only attribute-specific resource in our framework. Value extraction. The first pattern group, P values , allows extraction of the attribute values from the Web. All ... width 1.695m]’). We then extract new pat- terns from the retrieved search engine snippets and re-query the Web with the new patterns to obtain more attribute values. We provided the framework with ... value for the given object. During the first stage it is possible that we directly extract from the text a set of values for the requested object. The bounds processing step rejects some of these...

Ngày tải lên: 20/02/2014, 04:20

... query is a term, its hit is the number of pages that contain the term on the Web. We use the following notation. H(x)= the number of pages that contain the term x” The number H (x) can be used ... in the compiled corpus. R: the target term did not exist on the collected web pages. Only 43 terms (20%) out of 210 terms were col- lected by the system. This low recall primarily comes from the ... term list To make the term list L by extracting every term that is a noun or a compound noun from the compiled corpus. 2. Selection by scoring To select the top N (= 30) terms from the list L by...

Ngày tải lên: 20/02/2014, 16:20

... that, using the new web mining scheme, the web mining throughput is increased by 32%; (ii) The quality of the mined data is improved. By lever- aging the web pages’ HTML structures, the sen- tence ... English-Chinese parallel data from the web. The mining procedure is initiated by acquiring Chinese website list. We have downloaded about 300,000 URLs of Chinese websites from the web directories at ... (1) Given a web site, the root page and web pages directly linked from the root page are downloaded. Then for each of the downloaded web page, all of its anchor texts (i.e. the hyperlinked...

Ngày tải lên: 08/03/2014, 02:21

... (not calculated over the Web) as well as the conditional probability cal- culated over the Web (Web- P) delivered the best re- sults, while the PMI-based ranking measure yielded the worst results. ... coefficient (Web- Jac), the Pointwise Mutual Information (Web- PMI) and the conditional probability (Web- P). We also present a version of the conditional probability which does not use the Web but merely ... appropriate queries to the web search engine and choosing the article leading to the highest number of results. The corresponding patterns are then matched in the 50 snippets returned by the search engine...

Ngày tải lên: 08/03/2014, 02:21

... our modified version of the competitive link- ing algorithm, the link score of a pair of words is the sum of the φ 2 scores of the words themselves, their prefixes and their suffixes. In addition ... pairs, where the translation of the in-parenthesis terms is a suffix of the pre-parenthesis text. The lengths and frequency counts of the suffixes have been used to determine what is the translation ... translation pairs from web documents in Chinese. This is over two orders of magnitude more than the number of extracted translation pairs in the previously reported results (Cao, et al. 2007). The...

Ngày tải lên: 17/03/2014, 02:20

... hyponym patterns to extract class instances from the web and then evalu- ates them further by computing mutual information scores based on web queries. The work by (Widdows and Dorow, 2002) on lex- ical ... to instantiate the pattern. On the first iteration, the pattern is given to Google as a web query, and new class members are extracted from the retrieved text snippets. We wanted the system to ... progresses. Initially, the seed is the only trusted class member and the only vertex in the graph. The bootstrapping process begins by instan- tiating the doubly-anchored pattern with the seed class...

Ngày tải lên: 17/03/2014, 02:20

Ngày tải lên: 17/03/2014, 22:20

Ngày tải lên: 23/03/2014, 16:21

Ngày tải lên: 23/03/2014, 18:20

Ngày tải lên: 23/03/2014, 18:20

Ngày tải lên: 31/03/2014, 01:20

Ngày tải lên: 31/03/2014, 01:20

Ngày tải lên: 30/03/2014, 21:20

... assuming that the LpoHc2 and the a-subunits of N. inaurata and E. californicum on the one hand, and TtrHcA and the arachnid g-subunits on the other hand are orthologous proteins (see above). The fossil ... allows the unambiguous assignment to distinct subunit types. The orthologous subunits of these species share 69.1–76.2% of their amino acids, with the a subunits being the most conserved and the ... studies The web- based tools provided by the ExPASy Molecular Biology Server of the Swiss Institute of Bioinformatics (http://www.expasy.org) and the program GENEDOC 2.6 [25] were used for the analyses...

Ngày tải lên: 08/03/2014, 08:20

Ngày tải lên: 25/03/2014, 12:09

Ngày tải lên: 03/07/2014, 16:10

... code directly in the code-behind file of the .asmx Web service. But in a service-oriented architecture, it is important to design the Web service components themselves so that they truly act as ... to understanding the material in the second half of the book. The remaining chapters of the book cover all of the WS-Specifications that are imple- mented by WSE 2.0. Finally, the book closes ... and the characteristics of a Web service from the perspective of SOA. This chap- ter reviews the following topics: • SOA concepts and application architecture • The WS-I Basic Profile • The WS-Specifications •...

Ngày tải lên: 20/08/2012, 13:59

... been the case with the Maghreb, the Levant or the northern shore of the Mediterranean. The Great Eurasian Plain The low-lying land that stretches almost without interruption from Britain to the ... in the west, steppe in the east and boreal coniferous forest in the north. To the north were the glaciers and ice sheets. Throughout the Quaternary these four elements grew and shrank at the ... Nipponicervus, Rusa and Rucervus. These deer died out at the end of the Villafranchian, or the early Pleistocene in the case of the Middle East. In Japan, Nipponicervus survived to the end of the Pleistocene....

Ngày tải lên: 21/09/2012, 10:46