Báo cáo khoa học: "Closing the Gap: Learning-Based Information Extraction Rivaling Knowledge-Engineering Methods" pptx

... Closing the Gap: Learning-Based Information Extraction Rivaling Knowledge-Engineering Methods Hai Leong Chieu DSO National Laboratories 20 ... is needed. The full-scale ST taskis considerably harder than all the other IE tasks or subtasks outlined above. As is the case with many other natural language processing (NLP) tasks, there are ... accuracy comparable to the knowl...

Ngày tải lên: 23/03/2014, 19:20

... levels of the noun/verb hierarchy, then subtype := med/event 16. if the NP is a named entity (NE) or starts with the , then subtype := med/general 17. if the NP appears in the training set, then subtype ... this case, the NP will receive the subtype event, as ex- emplified by the NP the bus in the sentence below, which is triggered by the VP traveling in Miami. (8) We were...

Ngày tải lên: 22/02/2014, 03:20

... L4. The solved form of the restricted graph is then put below the left hole of L2, since it is connected to this hole. As a result, we obtain the solved form on the right of Fig. 3. Theorem 1. The ... et al., 2003, Theorem 10.1). 2. What is the precise relationship to other un- derspecification formalism? Are all of them the same, or else, what are the differences? We disting...

Ngày tải lên: 20/02/2014, 16:20

... variables how they will be sit- uated in a solution of the solved form. They can either dominate each other in either direction, or they can be disjoint. But if they are disjoint, we also know the lowest ... mapping each hole h to the label P(h ) in the USR, and mapping the new top hole 1/0 to the label denoting the root of the tree. 6 From Solved Forms to Constructive So...

Ngày tải lên: 22/02/2014, 02:20

... determined from the global fit. The constant a is the ratio of apparent dissociation con- stants for binding GST-IjBa in the presence and absence of ATP, and the value of a indicates whether the binding of ... [rhIKK2-GST-IjBa], K m is the Michaelis–Menten constant and the k cat is the break- down of the ES complex to E + product (P) [59] (Eqn 1). The equilibria describin...

Ngày tải lên: 16/03/2014, 11:20

... B for the WN synsets and the ROGET classes. A simi- larity score B(j, k) is computed for the jth WN synset (taking the synset itself, the hypernyms, and the coordinate terms) and the k ... large corpora. Among the attempts to enrich lexical information, many have been directed to the analysis of dictio- nary definitions and the transformation of the im- pli...

Ngày tải lên: 31/03/2014, 04:20

... l, where h f is the head word of the lex- ical category, f is the lexical category, s is the argu- ment slot, h a is the head word of the argument, and l indicates whether the dependency is ... and the empirical expected value, of each feature (to calcu- late the gradient); and the value of the likelihood function. For the normal-form model, the empiri- cal expected...

Ngày tải lên: 23/03/2014, 19:20

... follow- ing sentence as T for the hypothesis H: The ice is melting in the Arctic”: (3) T : The scene at the receding edge of the Exit Glacier was part festive gathering, part nature tour with ... modifiers. It is therefore necessary to substitute it first by one of the coreferences and then merge it with the other. 6 Results We analyzed 120 sentence-hypothesis pairs of the RTE-5...

Ngày tải lên: 30/03/2014, 21:20

... event as the first clause in the previous sentence. We are therefore making some assumptions about the way reporters structure their ar- ticles, and part of our work will be to see whether such ... valid ones. The second heuristic operates in much the same way as the first, but at the level of sentences. It is based on the reasoning that quiet clauses should be assigned to...

Ngày tải lên: 08/03/2014, 07:20

... remain the same. Hence, for the sen- tence ‘John opened the door’ and the door opened’, though the door’ is the object of the first sentence and the subject of the second, it is the ‘theme’ ... using short vowels u, and i at the end of the word. Hence, rjlu and AlTwylu agree in their Case ending 5 With- out the explicit marking of the Case information, 5 The prese...

Ngày tải lên: 31/03/2014, 00:20