Báo cáo khoa học: "Chinese Term Extraction Using Different Types of Relevance" potx

... of a domain, it is likely a term . Limited distribution information of term candi- dates in different documents often limits the abil- ity of such algorithms to distinguish terms from non-terms. ... a new term extraction ap- proach using relevance between term candi- dates calculated by a link analysis based method. Different types of relevance are used separately...

Ngày tải lên: 08/03/2014, 01:20

... Introduction Many methods for the automatic extraction of terms make use of patterns describing the structure of terms. This approach is especially helpful for multi-word terms. Depending on the method, ... “strato” and “volcano”. 3.3 Terms The overlap percentage between the list of terms and the list of key words ranges from 38.65% (V fr) to 56.92% (V en) of the total amount o...

Ngày tải lên: 17/03/2014, 22:20

... of collocation extraction systems should not be done at the end of the extraction process, but separately for each stage: after the candidate selection stage, for evaluating the quality (in terms ... Hybrid Collocation Extraction We consider that syntactic analysis of source cor- pora is an inescapable precondition for colloca- tion extraction, and that the syntactic structure o...

Ngày tải lên: 17/03/2014, 04:20

... R n hu ×d depends on the position of the i th word in s(·), with respect to the position pos w of the word of interest, and with re- spect to the position pos v of the verb of interest: C i = C(i − pos w , ... Analysis of our MLP While we gave an intuitive justification of the archi- tecture choices of our model in Section 4, we now give a systematic empirical study of those...

Ngày tải lên: 17/03/2014, 04:20

... tries to make full use of these different resources to get an optimal compromise of preci- sion and coverage for synonymous collocation extraction. We first obtain candidates of synony- mous collocation ... “switch on” is one of its synonyms. For the sense “be contingent on”, “depend on” is one of its synonyms. We take both of them as the synonyms of “turn on” regard- les...

Ngày tải lên: 17/03/2014, 06:20

... treated as part of a compound subject. Taking the WSJ corpus for example, at the dip point with recall=0.002 and precision=0.059, these two types of errors account for 70% of all errors. Extraction ... WOE parse to maintain a good recall with only moderate loss of precision. Extraction Speed vs. Sentence Length We also tested the extraction speed of different extractors. W...

Ngày tải lên: 23/03/2014, 16:20

... suffixes of headwords of length 2, 3 and 4. DISTANCE: Distance of the token from the predicate as a number of base phrases, and the distance as the number of VP chunks. LENGTH: the number of words ... the part of speech category of the predicate PREDICATE FREQUENCY: Frequent or rare using a threshold of 3. PREDICATE BP CONTEXT: The chain of BPs centered at the predicate w...

Ngày tải lên: 08/03/2014, 04:22

... believe these represent different types of information, just different ways of conceptualising and coding it. That seems not to be the case, at first sight, with the many forms of information for ... sense disambiguation (WSD) of content words in general text at a high level of accuracy. The methodology and evaluation of WSD are somewhat different from those of oth...

Ngày tải lên: 17/03/2014, 07:20

... always appear at the end of sentences. Sett) Set 1 Set2 Set3 Range of n 3-11 3-5 6-8 9-11 no. of texts 400 100 100 100 Table 1 Range of n (number of sentences) and number of documents for the datasets ... optimal number of segments. We believe that the good performance of our al- gorithm is the result of the combination of the fol- lowing facts: First, the use of a seg...

Ngày tải lên: 31/03/2014, 20:20

... Department of Biotechnology, Kyoto Institute of Technology, Japan 2 The First Department of Physiology, Kansai Medical University, Moriguchi, Osaka, Japan 3 Faculty of Bioscience, Nagahama Institute of ... membranes of mitochondria. The translation product of ferrochelatase is a single isoform, and the presequence corresponding to the mitochondrial recog- nition signal is presen...

Ngày tải lên: 16/03/2014, 00:20