TAILIEUCHUNG - Báo cáo khoa học: "Development and Evaluation of a Broad-Coverage Probabilistic Grammar of English-Language Computer Manuals"

We present an approach to grammar development where the task is decomposed into two separate subtasks. The first task is hnguistic, with the goal of producing a set of rules that have a large coverage (in the sense that the correct parse is among the proposed parses) on a bhnd test set of sentences. The second task is statistical, with the goal of developing a model of the grammar which assigns maximum probability for the correct parse. | Development and Evaluation of a Broad-Coverage Probabilistic Grammar of English-Language Computer Manuals Ezra Black John Lafferty Salim Roukos IBM Thomas J. Watson Research Center . Box 704 Yorktown Heights New York 10598 ABSTRACT We present an approach to grammar development where the task is decomposed into two separate subtasks. The first task is linguistic with the goal of producing a set of rules that have a large coverage in the sense that the correct parse is among the proposed parses on a blind test set of sentences. The second task is statistical with the goal of developing a model of the grammar which assigns maximum probability for the correct parse. We give parsing results on text from computer manuals. 1. Introduction Many language understanding systems and machine translation systems rely on a parser of English as the first step in processing an input sentence. The general impression may be that parsers with broad coverage of English are readily available. In an effort to gauge the state of the art in parsing the authors conducted an experiment in Summer 1990 in which 35 sentences all of length 13 words or less were selected randomly from a several-millionword corpus of Associated Press news wire. The sentences were parsed by four of the major large-coverage parsers for general Each of the authors working separately scored 140 parses for correctness of constituent boundaries constituent labels and part-of-speech labels. All that was required of parses was accuracy in delimiting and identifying obvious constituents such as noun phrases prepositional phrases and clauses along with at least rough correctness in assigning part-of-speech labels . a noun could not be labelled as a verb. The tallies of each evaluator were compared and were identical or very close in all cases. The best-performing parser was correct for 60 of the sentences and the the remaining parsers were below 40 . More recently in early

• Báo cáo khoa học
• Development and Evaluation
• Broad Coverage Probabilistic
• Grammar of English Language Computer Manuals
• báo cáo khoa học
• mô hình ngôn ngữ
• xử lý ngôn ngữ tự nhiên
• Evaluation criteria completion
• Road traffic construction
• Term of environment according to sustainable development
• Towards sustainable development
• Sustainable development in construction
• Meat analog
• Sensory evaluation
• Sensory evaluation of meat analog
• Development and sensory evaluation
• Highest overall acceptability compared
• Technological factors on efficiency of claus reactor
• Development of linguistic models for evaluation of sulfur quality
• Evaluation of sulfur quality
• Mass fraction of organic substances
• The linguistic dependence representing production
• Sorghum flour
• Composite bread
• Evaluation of low gluten composite bread
• Human development
• Economic projects
• The indicators
• Economic evaluation of some projects funded
• Human development in fayoum governorate
• Evaluation of physico chemical properties
• Physico chemical properties
• Kinnow aonla
• Aloe vera juice extracts
• Application rate
• Coefficient of uniformity
• Performance evaluation
• Manure spreader
• Development and performance evaluation
• Ready to eat snacks
• Goat offal meat powder
• Extruded snacks incorporating goat
• Development and quality evaluation
• Quality evaluation
• Banana (Musa acuminate
• Musa balbisiana)
• Cutting tols
• Banana comb cutting tool
• Collecting a Why question corpus
• automatic QA system
• báo cáo ngôn ngữ
• Tạp chí khoa học
• Tạp chí Công nghệ
• Quản lý công nghệ
• Evaluation of impacts
• Science and technology
• Economic development
• Red River Delta
• Synchronous computer mediated communication
• Oral role plays
• Students’ evaluation
• Language skills development
• Foreign language classroom
• Summary of Doctoral dissertation
• Development of evaluation criteria
• Techno economic criteria
• Ensure sustainable operation
• Urban wastewater treatment plant
• Land suitability
• Land potential
• Applying multi criteria evaluation
• Annual agricultural crops development
• Land potential productivity assessment
• Bullock drawn vegetable transplanter
• Bare root seedlings
• Field efficiency
• Furrow opener and press wheels
• Roasted maize flour
• Value added
• Value added roasted maize flour
• Important coarse grain cereal
• Opuntia dillenii Haw
• Wild prickly pear
• Prickly pear (Opuntia dillenii Haw )
• Quality evaluation during storage
• Development of squash
• Sorghum stalks
• Stalk girth
• Moisture content
• Cutting energy
• Pendulum type impact
• Development of snack containing meat
• Snack containing meat
• Snack containing meat by products
• Nutritional evaluation
• Pulverized dehydrated bovine lung
• Kokum residue powder
• Development of ready to serve beverage
• RTS preparation
• Conducted on utilization
• Evaluating materials
• Material evaluation
• Material development
• Face2face Upper intermediate Student’s Book
• ESL textbook evaluation
• Evaluation of growth of tomato
• Development of some varieties of tomato
• Lycopersicon esculentum Mill
• Nethouse conditions in Chau Doc
• Real field production
• Lactic acid bacteria
• Vogues proskauer test
• Process development
• Agro residues
• Evaluation of lactic acid bacteria
• Efficiency and evaluation
• Technical efficiency evaluation
• Kenyan sample banking sector
• Producing below the production frontier
• Banks have undergone incredible development