Tài liệu Báo cáo khoa học: "Arabic Tokenization, Part-of-Speech Tagging and Morphological Disambiguation in One Fell Swoop" pdf

... approach to using a mor-phological analyzer for tokenizing and morphologically tagging (including part-of-speech tagging) Arabic words in one process. We learn classifiers for individual morphological ... conjunction prefix (++w and ) and a pronominal possessive suffix ( + +y ‘my’). In our approach, tokenizing and morphologically tagging (including part-of-speech tagging) are thesame operation, ... tokenization, traditional POS tagging, and full morphological disambiguation in one fell swoop.3 Related WorkOur work is inspired by Hajiˇc (2000), who con-vincingly shows that for five Eastern...

Tài liệu Báo cáo khoa học: "Applications of GPC Rules and Character Structures in Games for Learning Chinese Characters" doc

... hints to link the meanings and writings of Chinese characters. For instance, “河”(he2, river) [Note: Chinese char-acters will be followed by their pronunciations, denoted in Hanyu pinyin, and, ... challenging task for learners of Chinese. To read everyday news articles, one needs to learn thou-sands of Chinese characters. The official agents in Taiwan and China, respectively, chose 5401 and ... ‡↑↕Academia Sinica, Taiwan †chaolin@nccu.edu.tw, ‡chiaying@gate.sinica.edu.tw Abstract We demonstrate applications of psycholin-guistic and sublexical information for learn-ing Chinese characters....

Tài liệu Báo cáo khoa học: "Answer Extraction, Semantic Clustering, and Extractive Summarization for Clinical Question Answering" pdf

... details in (Demner-Fushman and Lin,2005; Demner-Fushman and Lin, 2006 in press).4.2 Semantic ClusteringRetrieved MEDLINE citations are organized intosemantic clusters based on the main interventionsidentiﬁed ... etal., 2001; Lawrie and Croft, 2003).Our work, which is situated in the domain ofclinical medicine, lies at the intersection of ques-tion answering, information retrieval, and summa-rization. ... Clustering, and Extractive Summarizationfor Clinical Question AnsweringDina Demner-Fushman1,3 and Jimmy Lin1,2,31Department of Computer Science2College of Information Studies3Institute...

Tài liệu Báo cáo khoa học: "Automatic Identification of Pro and Con Reasons in Online Reviews" ppt

... sentence in those reviews collected from each domain with the features described in Section 3.1. We divided the data for training and testing. We then trained our model using the training set and ... observation in online reviews, most reviews have both pros and cons even if sometimes one of them dominates. 3 Finding Pros and Cons This section describes our approach for find-ing pro and con ... concentrated on mining and summarizing reviews by extract-ing opinion sentences regarding product features. In this paper, we focus on another challenging yet critical problem of opinion analysis,...

Tài liệu Báo cáo khoa học: "Arabic Morphological Tagging, Diacritization, and Lemmatization Using Lexeme Models and Feature Ranking" pdf

... tuningcorpus (different tuning for different tasks).2 Morphological Disambiguation Tasks forArabicWe deﬁne the task of morphological tagging as choosing an in ectional morphological tag (in this ... mor-phological tagging tasks, subsuming MorphPart and MorphPOS, and DiacFull is the hardest lexicaltask, subsuming DiacPart, which in turn subsumesLexChoice. However, MorphAll and DiacFull are (in general) ... lemmatization; (b) we usean explicit modeling of lexemes as a component in all tasks discussed in this paper (morphological tag-ging, diacritization, and lemmatization); and (c) wetune the weights of...

Tài liệu Báo cáo khoa học: "Arabic Cross-Document Coreference Detection" doc

... resolu-tion. We compare a baseline system ofexact mention string-matching to ones thatinclude local mention context informationas well as information from an existingmachine translation system. ... engine to find documents about one of them, we are likely also to find documentsabout the other. Improving our ability to find alldocuments referring to one and none referring tothe other in ... single cross-document entity, it emits a link between within-document entities A and B represented as the pair(A, B). We maintain a list of such links, but weomit all links between within-document...

Tài liệu Báo cáo khoa học: "Arabic Syntactic Trees: from Constituency to Dependency" ppt

... shuffling in this respect is in- evitable.2.3 Tree post-processingCompletion of the dependency tree also involvespruning of subtrees which are co-indexed withsome trace, and attaching them in ... sentence in the dependency analytical description, showing the nodes and theirfunctions in the hierarchy.head child of each node in a phrase structure, usingthe head percolation table, and (b) in ... annota-tion schemes and a deeper insight intothese procedures, model application ofthe transformation is given herein.1 IntroductionExploring the relationship between constituency and dependency...

Tài liệu Báo cáo khoa học: Multi-targeted activity of maslinic acid as an antimalarial natural compound pdf

... agents, like those interfering withhemozoin polymerization in the vacuole (chloroquine,quinine, meﬂoquine and other alkaloids), the dihydro-folate pathway (pyrimethamine, sulphadoxine, progua-nil), ... Accordingly, an additionalinhibition assay was performed using P. falciparumprotein extracts and including cathepsin D (an asparticprotease) and the aspartic protease inhibitor pepstatinA ... aPlasmodium falciparum cysteine proteinase. J Clin Invest88, 1467–1472.38 deDominguez NDG & Rosenthal PJ (1996) Cysteineproteinase inhibitors block early steps in hemoglobindegradation by cultured...

Tài liệu Báo cáo khoa học: How to remain nonfolded and pliable: the linkers in modular a-amylases as a case study ppt

... participatingTable 1. Amino acid frequencies (%) in a-amylase linkers, in a setof globular proteins, in the Swiss-Prot databank and in intrinsicallyunstructured proteins.Aminoacid LinkersaGlobularproteinsbSwiss-ProtcIntrinsicallyunstructuredproteinsbAla ... ofthis domain in recently available sequence and genomedatabanks. Interestingly, this domain was found in some closely related bacterial species, but mainly in nonvertebrate animals, and invariably ... the ring may sterically disfavor extensivebending in this region, which could result in unwantedinteractions between the linker and the binding module. In this respect, 72% of the C-terminal...

Tài liệu Báo cáo khoa học: Modulation of a-synuclein aggregation by dopamine in the presence of MPTP and its metabolite pptx

... solid line), in the presence of100 lM neurotoxin (•, dotted line), in thepresence of 200 lM neurotoxin ( , dottedline) and in the presence of neurotoxin and 50 lM dopamine (h, dashed line).Modulation ... K,Kuroiwa Y et al. (2008) RNA-binding protein TLS is amajor nuclear aggregate-interacting protein in hunting-tin exon 1 with expanded polyglutamine-expressingcells. J Biol Chem 283, 6489–6500.25 ... pooled and the amount of protein was determined by the bicinchoninicacid assay [38] using bovine serum albumin as a standardprotein. The pooled eluate fractions were dialysed againstwater and...

Xem thêm