Báo cáo khoa học: "Experiments with Interactive Question-Answering" doc

... associated with each topic signature more general (a) by replacingwords with their (morphological) root form (e.g.wounded with wound, weapons with weapon), (b)by replacing lexemes with their ... determine a binary partition ofthe document collection into (1) a relevantset of documents(that is, the documents rel-evant to relation ) and (2) a set of non-relevantdocuments - . Inspired by the ... the documents where therelation is identiﬁed, andrepresents sup-port associated with the relation . is de-ﬁned as the sum of the relevance of each documentin : . The relevanceof a document...

Báo cáo khoa học: "Learning with Annotation Noise" docx

... c0·√d with probability23, and the lemmafollows from the law of large numbers✷Corollary 6 With high probability τ = θ(1).Proof : Lemma 5 shows that for a samplex1, . . . , xN with high ... F−1(θ(1√N) +12).According to theorem 1, for a 10K dataset with 15% hard case rate, a hard case bias of about 1%cannot be ruled out with 95% conﬁdence.Theorem 1 suggests that annotation noise ... instance(x, y) with respect to hyperplane (w, ψ) and mar-gin δ > 0 is given by ζ = ζ(ψ, δ) = max(0, δ −y · (w, x −ψ)).ζ measures the distance of an instance frombeing classiﬁed correctly with...

Tài liệu Báo cáo khoa học: "Experiments in Semantic Classification" pptx

... between the signs, with respect to the groups, but there is no difference between the signs with respect to any single common member of the groups. When we are concerned with that particular ... have dealt with 500 rows, but 2000 have been prepared. For the initial sample of 500 a small number of words that we have called “starting words,”* with varying ranges of uses, but with some ... together with C D, which is similar to both and so brings them into the same clump. Suppose now, therefore, that we have our two text words A and B with their respective sets of rows, and that with...

Tài liệu Báo cáo khoa học: "Unsupervised Discourse Segmentation of Documents with Inherently Parallel Structure" pdf

... our model is as follows:• Draw the document-level topic proportions β (doc) ∼GEM(α (doc) ).• Choose the document-level language model φ (doc) i∼Dir(γ (doc) ) for i ∈ {1, 2, . . .}.• Draw ... and each sentence n:– Draw type t(k)n∼ Unif (Doc, P art).– If (t(k)n= Doc) ; draw topic z(k)n∼ β (doc) ; gen-erate words x(k)n∼ Mult(φ (doc) z(k)n)– Otherwise; draw topic z(k)n∼ ... part-speciﬁc language model φ(k)i) or correspond tothe entire document (drawn from a document-levellanguage model φ (doc) i). For example, the ﬁrstand the second sentences of the lecture...

Tài liệu Báo cáo khoa học: "Learning with Unlabeled Data for Text Categorization Using Bootstrapping and Feature Projection Techniques" doc

... words within a document as a context. To extract contexts from a document, we use sliding window techniques (Maarek et al., 1991). The window is a slide from the first word of the document ... title word with the maximum similarity score with a word W, cmax is the category of the title word Tmax, and Tsecondmax is other title word with the second high similarity score with the ... but not in a document. That is, the Naive Bayes classifier does not require labeled data with the unit of documents unlike other classifiers. We use the Naive Bayes classifier with minor modifications...

Tài liệu Báo cáo khoa học: "Wysiwym with wider coverage" pdf

... multilin-gual technical documentation, and the formula-tion of queries to a database or expert system.In the ﬁrst case, Wysiwym editing encodes thedesired content of the document in an interlin-gua, ... accompanying demonstra-tion) is to describe these novelties.2 Editing with simple typestakepatientaspirinARG−1ARG−2Figure 1: A-box with simple typesIn early Wysiwym applications, the editingprocess ... language generator with two special features: (a) it can generatetexts from an A-box in any state of completion(even empty); (b) it can generate menus open-ing on anchors within the text, in...

Tài liệu Báo cáo khoa học: "Parsing with generative models of predicate-argument structure" pptx

... derivation tree itself. It as-sumes that binary trees (with parent category)have one head child (with category) and one non-head child (with category), and that each nodehas one lexical head. ... projection of constituents. After expandingthenode to and, the NP that is co-indexed with woman can-not be uniﬁed with the object of saw anymore.These examples have shown that two changes tothe ... number of times it occurs with lex-ical categoryand is the th argument of the lexicalfunctorin question, divided by the numberof times theth argument of is instantiated with a constituent whose...

Tài liệu Báo cáo khoa học: "Generating with a Grammar Based on Tree Descriptions: a Constraint-Based Approach" pptx

... indices. Specifically, an activeedge with category A( )/C(c ) (with c the se-mantics index of the missing component) is re-stricted to combine with inactive edges with cate-gory C(c ), and vice ... matrix with exactly one lexical entry, then parsing a sen-tence consists in finding the saturatedmodel(s) with yield such that sat-isfies the conjunction of lexical tree descriptions with the ... which isfilled with the above mentioned ROOT descrip-tion) and columns give the lexical entries asso-ciated by the grammar with these words. Anymatrix entry which is empty is filled with the for-mulawhich...

Tài liệu Báo cáo khoa học: "EXPERIMENTS AND PROSPECTS OF EXAMPLE-BASED MACHINE TRANSLATION" ppt

... with detailed comparisons between RBMT and EBMT. 2 BASIC IDEA OF EBMT 2.1 BASIC FLOW In this section, the basic idea of EBMT, which is general and applicable to many phenomena dealt with ... retrieved, EBMT generates the most likely translation with a reliability factor based on distance and frequency. If there is no similar example within the given threshold, EBMT tells the user that ... should deal with the whole process of translation. We assume that there are many kinds of phenomena. Some are suitable for EBMT, while others are suitable for RBMT. Integrating EBMT with RBMT...

Tài liệu Báo cáo khoa học: "INTEGRATING WITH WORD BOUNDARY IDENTIFICATION SENTENCE UNDERSTANDING" docx

... words. It performs word boundary disambiguation concurrently with sentence understanding. In our investigation, we focus on sentences with clearly ambiguous word boundaries as they constitute ... Crescent, Singapore 0511 Internet: gankw@iscs.nus.sg Abstract Chinese sentences are written with no special delimiters such as space to indicate word boundaries. Existing Chi- nese NLP systems ... understanding, we propose an integrated model that performs word boundary identification in lockstep with sentence understanding. In this approach, there is no distinc- tion between rules for word...

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