Báo cáo khoa học: "Discovering the Lexical Features of a Language" pot

... under grant No. AFOSR-90-0066, and by ARO grant No. DAAL 03-89- C0031 PRI. the lexical features of a language. The work is based upon the hypothesis that whenever two words are se- mantically ... paper examines the possibility of automatically discovering the lexieal features of a language. There is strong evidence that the set of possible lexical fea- t...

Ngày tải lên: 17/03/2014, 08:20

... pair similarity computation since the other parts of speech (adjectives and adverbs) do not have a taxonomic representation structure. For example, the jcn similarity measure (Jiang and Conrath, ... definition, there are many hypotheses of latent vectors that are highly related to the observed words. Therefore, missing words can be used to prune the hypotheses that are also highl...

Ngày tải lên: 19/02/2014, 19:20

... many complex applications use a syntactic parser as a basic functionality. Today, in particular for the French language, the developers face the great diversity of the offer in the domain. Therefore, the ... size, the particularities and the grammaticality of the input. For this reason, it is essential to be able to compare in a fair way the parses they produce a...

Ngày tải lên: 17/03/2014, 22:20

... formulated a hypo- thesis that describes an integrated vision of the catalytic mechanism of both enzymes. The main points are: (a) a re-evaluation of the role of superoxide as a reductant in the catalytic ... amino acid radical localized on the protein scaffold of MPO was generated only in the presence of H 2 O 2 . The nature of such a radical has not been...

Ngày tải lên: 20/02/2014, 02:21

... 2007). As of today, only a partial comparative picture is available regarding the actual utility and limi- tations of available resources for lexical- semantic inference. Works that do provide quantitative information ... sub- sentential levels, addressing a gap in the textual entailment framework. Our evaluation and analy- sis provide a first quantitative comparative assess- me...

Ngày tải lên: 22/02/2014, 02:20

... laborious and subjective task that often leads to noisy results. Automatic image annotation is a more robust approach to ABIR than manual annotation. Un- fortunately, automatically selecting the most ap- propriate ... non -lexical features to aid in the selection of useful indexing terms. 2 Image Retrieval: Recent Work Automatic image annotation is a broad topic, and the automa...

Ngày tải lên: 17/03/2014, 22:20

... of the addi- tion was the total disappearance of specific resonances without the concomitant appearance of other signals in other parts of the spectrum. This result could be a consequence of the ... protein ratio, the resonances of Arg20, Asp22 and Asp23 disap- peared, and the resonance of Leu21 shifted. At a 2 : 1 ratio, the resonances of residues 19 and 44...

Ngày tải lên: 18/02/2014, 16:20

... and pET A3 A 4A5 – atdA2 pACYC A1 and pET A3 A 4A5 + atdA3 pACYC A1 A2 and pET A4 A5 – Control (no deletion) pACYC A1 A2 and pET A3 A 4A5 + E. L. Ang et al. Substrate specificity of aniline dioxygenase FEBS ... and A1 _SalI_R primers. The atdA2 gene was amplified using the A2 _FseI_F and A2 _AvrII_R primers. The atdA3 gene was amplified using the A3 _EcoRI_F and A3 _SalI_R...

Ngày tải lên: 19/02/2014, 02:20

... maximal mAb ⁄ heparin effect on the functional activ- ity of TC. Arrows show the hypothetical movement of the domains after attachment of Cbl, see the main text. Mapping of transcobalamin using antibodies ... Geremia S & Randaccio L (2001) Crystallization and preliminary X-ray diffraction analysis of human transcobalamin, a vitamin B 12 -transporting protein. Acta Crys...

Ngày tải lên: 20/02/2014, 01:20

... semi-structured data made available to search engines, such as relational databases and semantically annotated web documents. Search- ing over such data sources, in many cases, can offer more relevant and ... particular, Li et al. leveraged click- through data and a database to automatically de- rive training data for learning a CRF-based tagger. Manshadi and Li developed a hybrid, gene...

Ngày tải lên: 20/02/2014, 04:20