Báo cáo khoa học: "Fully Unsupervised Discovery of Concept-Specific Relationships by Web Mining" pdf

... Unsupervised Discovery of Concept-Specific Relationships by Web Mining Dmitry Davidov ICNC The Hebrew University Jerusalem 91904, Israel dmitry@alice.nc.huji.ac.il Ari Rappoport Institute of Computer ... a broad variety of relationships with good pre- cision. 1 Introduction The huge amount of information available on the web has led to a flurry of research on methods f...

Ngày tải lên: 23/03/2014, 18:20

... the verb (according to the unsupervised parse tree), whose parent is an ancestor of the verb. This follows the pruning heuristic of (Xue and Palmer, 2004) often used by SRL algorithms. The corpus ... identification of prepositions and verbs) scenario, a gold standard list of prepo- sitions was provided. The list was generated by taking every word tagged by the preposition tag (...

Ngày tải lên: 30/03/2014, 21:20

... corpus c and a vector of parameters θ ∈ Θ to one of the possible segmentations of that corpus. The goal of fully unsupervised segmentation is to reduce SEGMENT(c, θ) to SEGMENT(c) by removing the need ... implicitly defined by S, is simply the set of unique words in S. The description length of S can then be broken into two components, the description length of the lex- ico...

Ngày tải lên: 30/03/2014, 21:20

... vivo. Known variants of the ApoC1 gene are limited to un- translated regions of the gene, synonymous mutations of the coding sequence and a number of variants of the intron regions of the gene (NCBI ... survey of plasma proteins in approximately 1300 individuals by MALDI-TOF MS resulted in identification of a structural polymorphism of apolipoprotein C1 (ApoC1) that was fou...

Ngày tải lên: 19/02/2014, 05:20

... formed by hydrolysis of UDP-glucuronate or indirectly through the transfer of glucuronide to an endogenous (unknown) acceptor by a UDP-glucuronosyltransferase, followed by the hydrolysis of the ... microsomal fraction by only 20%, despite the presence of ATP- Mg. It is shown below that this is due to loss of the inhibitory effect of ATP-Mg, consequent to the removal of a...

Ngày tải lên: 19/02/2014, 07:20

... of the methods are suitable for retrieval of numerical attributes. How- ever, most of them do not exploit the numerical nature of the attribute data. Our research is related to a sub-domain of ... variation of the extracted numerical attribute values using infor- mation in the textual context of these values. A significant body of recent research deals with extraction of vari...

Ngày tải lên: 20/02/2014, 04:20

... each phrase out of many more yielded by the model. It fails to take into account the quality of the list of top interpreta- tions, although the latter is deemed to be the aim of such applications. ... was stored. This means that sense 3 of watch, sense 3 of view and sense 7 of see would be correct interpretations of the metonymic expression. The obtained number of synsets...

Ngày tải lên: 20/02/2014, 09:20

... mechanism of regulation of both domains involves a common iron dependent process [74,75,79]. Regulation of HIFa subunits by oxygen-dependent prolyl and asparaginyl hydroxylation A variety of oxygen ... CAD of HIF-1a and HIF-2a. Other mechanisms of activation The induction of HIF activity by well established agents such as hypoxia, cobaltous ions and iron chelators can be eas...

Ngày tải lên: 20/02/2014, 23:20

... to a recognition of noun phrases of the type normally included in back -of- the-book indexes, and an identification of related terms included in a preconstructed thesaurus of quasi-synonyms. ... components of greater or lesser importance. In summary, the uncertain (fuzzy) nature of the term relationships which obtain in the natural language are not reflected by the rul...

Ngày tải lên: 22/02/2014, 09:20

... 10 –3 deg cm 2 dmol –1 presence of salt absence of salt Fig. 5. Effect of salt on the structure of IbeA. Structural changes of IbeA as a function of pH were monitored by studying ellipticity values ... NMR view of the non-cooper- ative unfolding of a molten globule. Nat Struct Biol 4, 630–634. 17 Dalby PA, Oliveberg M & Fersht AR (1998) Folding intermediates of wild-...

Ngày tải lên: 07/03/2014, 05:20