**Báo cáo khoa học: "An Exact A* Method for Deciphering Letter-Substitution Ciphers" doc**

Báo cáo khoa học: "An Exact A* Method for Deciphering Letter-Substitution Ciphers" doc

... Association for Computational Linguistics, pages 1040–1047,Uppsala, Sweden, 11-16 July 2010.c2010 Association for Computational LinguisticsAn Exact A* Method for Deciphering Letter-Substitution ... G(i−2, j2, k)× P (j1|j2) × P(l|j2j1)).end for end for for i = 4 to r do for (l, k) such that σ ∪ {k : c, l : Ci} is con-sistent do for j1, j2such that σ ∪ {k : c, j2:C[i−2], ... has thepotential to be a viable, practical method for efﬁciently solving decipherment prob-lems.1 Introduction Letter-substitution ciphers encode a documentfrom a known language into an unknown...

Tài liệu Báo cáo khoa học: "AN INTEGRATED HEURISTIC SCHEME FOR PARTIAL PARSE EVALUATION" docx

... features are designed to be general and, for the most part, grammar and domain independent. For each parse, the heuristic computes a penalty score for each of the features. The penalties ... AN INTEGRATED HEURISTIC SCHEME FOR PARTIAL PARSE EVALUATION Alon Lavie School of Computer Science Carnegie Mellon University 5000 Forbes Ave., Pittsburgh, PA 15213 email : ... tree The penalty scheme for skipped words is designed to prefer parses that correspond to fewer skipped words. It assigns a penalty in the range of (0.95 - 1.05) for each word of the original...

Báo cáo khoa học: " An NLP Tool Suite for Processing Word Lattices" docx

... annotation format. Moreover,the MACAON exchange format was deﬁned from thebottom up, originating from the authors’ need to useseveral existing tools and adapt their input/outputformats in order for ... theMACAON exchange format. htk2macaonand fsm2macaon convert word lattices fromthe HTK format (Young, 1994) and ATTFSM format (Mohri et al., 2000) to theMACAON exchange format. macaon2txt ... the use of MACAON for the LUNA project is theability to perform the linguistic analyses on the mul-tiple hypotheses produced by the ASR system. It istherefore possible, for a given syntactic...

Báo cáo khoa học: "An Ontology–Based Approach for Key Phrase Extraction" docx

... methodology for key phrase extraction. This method combines a pattern-based method and a statistical learning method. Both methods will complement each other to increase the expected performance ... of c. Although we utilize information from Wikipedia to build the ViDic, our method can be adapted for an ontology or knowledge base in general. 5 Proposed method We consider the employment ... for the problem of Viet-namese POS Tagging (Chau and Tuoi, 2006). This model combines a rule-based method and a statistical learning method. With regard to data, we use a lexicon with information...

Báo cáo khoa học: "PREDICTIVE COMBINATORS A METHOD PROCESSING OF COMBINATORY CATEGORIAL GRAMMARS" doc

... be uniformly left-branching. For cases of rightward extraction (8b), derivations will be uniformly right-branching. It is our conjecture that CCGs can be compiled so as to force uniform branching ... n 7 for Head Grammars. piling a predictive form of CCGs, given a base form along the lines of Steedman (1985), has been implemented for CCGs expressed in a PATR-like unification grammar for- ... at least 132 distinct derivations for the sentence now appearing in (10) with CCGs using forward functional composition directly. With forward-predictive forward functional composition in its...

Báo cáo khoa học: "An efﬁcient algorithm for building a distributional thesaurus (and other Sketch Engine developments)" pdf

... each context(CONTEXTS is the set of all contexts): for r, w′ in CONTEXTS:WLIST = set of all w where w, r, w′ exists for w1in WLIST: for w2in WLIST:sim(w1, w2)+ = f(frequencies)1The ... above the thresh-old2http://www.natcorp.ox.ac.uk3http://www.askoxford.com/oec/ We are grateful to OxfordUniversity Press for permission to use the OEC.42Corp MIN WDS TYP CTX TIMEBNC 1 152k ... have made a number of runs with differentvalues of MIN for BNC, OEC and Itwac and presentdetails for some representative ones in Table 1. For the BNC, the number of partitions that the TP-MMS...

Tài liệu Báo cáo khoa học: "An Open Source Toolkit for Phrase-based and Syntax-based Machine Translation" docx

... Association for Computational Linguistics, pages 19–24,Jeju, Republic of Korea, 8-14 July 2012.c2012 Association for Computational LinguisticsNiuTrans: An Open Source Toolkit for Phrase-based ... of minimum error rate training that allows for various evaluation metrics for tuning the system. In addition, the toolkit provides easy-to-use APIs for the development of new features. The ... improved in several ways. For example, we used several pruning and multithreading techniques to speed-up the system. 3 Toolkit The toolkit serves as an end-to-end platform for training and evaluating...

Tài liệu Báo cáo khoa học: "An Entity-Mention Model for Coreference Resolution with Inductive Logic Programming" pdf

... learningalgorithm. During resolution, an input document isprocessed from the ﬁrst mention to the last. For eachencountered mention mj, a test instance is formed for each preceding mention, mk. This ... Eq. (2) per-forms coreference resolution at an entity-level. For simplicity, the framework considered for the entity-mention model adopts similar training and testingprocedures as for the mention-pair ... greedy clusteringstrategy. Given a test document, the mentions areprocessed one by one. For each encountered men-tion mj, a test instance is formed for each partial en-tity found so far,...

Tài liệu Báo cáo khoa học: "An Empirical Investigation of Proposals in Collaborative Dialogues" docx

... adaptations for our corpus and research issues. For details about our scheme, see (Di Eugenio et al., 1997); for details about features we added to DR/, but that are not relevant for this paper, ... Kappas for Forward and Backward Func- tions exist to the set of constraint equations, each varl in the set of equations must have a solution. For example, if 5 instances of sofas are known for ... con- tributing factor for the low K on Agreement is that these tags are much rarer than the Forward Func- tion tags. The highest possible value for K may be smaller for low frequency tags...

Tài liệu Báo cáo khoa học: "An alternative LR algorithm for TAGs" docx

... satisfying: • CS(N) + C_ CS(N), for each N; • (N, L) • CS(N), for each N such that N <~* l, and each L • Af*; • N • CS(N), for each N such that -~(N<~*l); and • for each N, children(N) ... (unique) Xj (1 _< j _< m) which is of the form (M, [NIL]), 2Exactly in the case that N dominates a footnote will (exactly) one of the Xj be of the form (M, L), some M. and set X = N if L [] ... tree. Formally, items are completed if they are of the form [t,T ~ Rt •] or of the form [(t,N),N -+ a •]. The main concept needed for the construction of the LR table is that of LR states....

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