Tài liệu Báo cáo khoa học: "Is There Natural Language after Data Bases?" pptx

... Is There Natural Language after Data Bases? Jaime G. Carbonell Computer Science Department Carnegie-Mellon University Pittsburgh, PA 15213 1. Why Not Data Base Query? The ... Like Data Bases Well, then, have I got the natural language interface task for you! Data base update presents many unsolved problems not present in pure query systems. "Aha," the data ... 15213 1. Why Not Data Base Query? The undisputed favorite application for natural language interfaces has been data base query. Why? The reasons range from the relative simplicity of the...

Tài liệu Báo cáo khoa học: "Domain-Independent Natural Language Database Access Systems" pptx

... language atoms= =X=~em=, The principle motivation for building natural language systems for database access is ~o free the user from the need for data processing instruction. A natural language ... the database as a substitute for conceptual knowledge regarding the database content area. In this paper I examine the issue of whether or not it is possi- ble to build a natural language database ... Domain-Independent Natural Language Database Access Systems Steven P. Shvartz Cognitive Systems Inc. 234 Church Street New Haven, Ca. 06510 Zn the past decade, a number of natural lang- uage database...

Tài liệu Báo cáo khoa học: "GEMINI: A NATURAL LANGUAGE SYSTEM FOR SPOKEN-LANGUAGE UNDERSTANDING*" doc

... Natural Language& quot;, Cog- nition, Vol. 2, No. 1, pp. 15-47. MADCOW (1992). "Multi-site Data Collection for a Spoken Language Corpus", in Proceedings of the DARPA Speech and Natural ... 94025 Internet: dowding@ai.sri.com 1. INTRODUCTION Gemini is a natural language (NL) under- standing system developed for spoken language applications. This paper describes the details of the ... GEMINI: A NATURAL LANGUAGE SYSTEM FOR SPOKEN -LANGUAGE UNDERSTANDING* John Dowding, Jean Mark Gawron, Doug Appelt, John Bear,...

Tài liệu Báo cáo khoa học: "ISSUES IN NATURAL LANGUAGE ACCESS TO DATABASES FROM A LOGIC PROGRAMMING PERSPECTIVE" doc

... relational database query language. Moreover, the efficiency of the DEC-10 Prolog implementation is comparable both with compiled Lisp [9] and with current relational database systems [6] (for databases ... reallsed in the language Prolog, has a great deal in common with the relational approach to databases, which can be seen as the result of a "bottom-up" effort to make database languages ... to make database languages more like natural language. However Prolog is much more general than relational database formalisms, in that it permits data to be defined by general rules having...

Tài liệu Báo cáo khoa học: "MENU-BASED NATURAL LANGUAGE UNDERSTANDING " pptx

... End-users can construct natural language interfaces to their own data in minutes, notweeks or years, and without the aid of a grammar special- ist. There is heavy dependence on a data diction- ary ... menu-based, natural language interfaces to databases. 3. Features of NLMenu Interfaces to Databases The NLMenu system does not store the words that correspond to open class data base attributes ... transportable natural language system. Technical Note 263, SRI International, Menlo Park, California. April, 1982. Harris, L. Experience with ROBOT in 12 commercial natural language database query...

Tài liệu Báo cáo khoa học: "Panel on Natural Language and Databases" pot

... Assum- ing that natural language systems will not by themselves get faster as they are made to cope with larger fragments of a natural language, it will be useful to continue with database query ... database query as a test environment is that a great deal of important natural language processing research remains to be done in generalizing systems to cope with more than one natural language. ... with the proposition that database query has outlived its usefulness as a test environment for natural language processing (for reasons that I give below), I believe there are other reasonable...

Tài liệu Báo cáo khoa học: Is ATP binding responsible for initiating drug translocation by the multidrug transporter ABCG2? docx

... retained immediately post-hydrolysis. Therefore, the dissoci-ation of phosphate and ⁄ or ADP is likely to be responsible for resettingof the transporter. The data indicate that, like ABCB1 and ... conducted with 300–350 nm of the radioligand. There was no detectable dis-placement of [3H]daunomycin binding to membranesthat did not express ABCG2R482G (data not shown).A heterologous drug displacement ... trapping to reduce [3H]dauno-mycin binding to ABCG2R482Gwas 21.3 ± 3.3 mmof nucleotide. Therefore, the data demonstrate thatABCG2R482Gremains in a conformation that containsa low-afﬁnity...

Tài liệu Báo cáo khoa học: "Is the End of Supervised Parsing in Sight?" pdf

... and that in the field of syntax-based language modeling the end of supervised parsing has come in sight. 1 Introduction A major challenge in natural language parsing is the unsupervised ... hand-annotated data which are difficult to come by and which exist only for a few languages. Unsupervised parsing methods are becoming increasingly important since they operate with raw, unlabeled data ... subsets from the NANC’s WSJ data with Penn’s WSJ data. Next, we will do the same with 2 million sentences from the LA Times in the NANC corpus, and finally we will mix all data together for inducing...

Tài liệu Báo cáo khoa học: How does hepatitis C virus enter cells? pptx

... infectious in chimpanzeesand viral RNA was detected in the serum up to5 weeks postinfection. Thereafter, infection was clearedwithout signs of liver inﬂammation.The described cell culture systems ... the circu-lation (see below).Do all HCV particles require an envelope for cellentry? Again, there are at least doubts. The detectionof both envelope proteins in lipoprotein-associatedvirions ... detect the envelope can also be the result oftechnical problems of the detection methods. However, there are indications that these particles might exist[12,22]. Further analysis will be needed...

Tài liệu Báo cáo khoa học: Structure and function of plant aspartic proteinases pptx

... also been detected in recom-binant proteins from bacterial origin [3]. According to theMEROPS database (http://www.merops.ac.uk), created byRawlings & Barrett [4], APs are now grouped into ... bypepstatin and have two aspartic acid residues responsible forthe catalytic activity [2,5]. However, there are severalstructural and functional features that make plant APsunique among aspartic proteinases. ... are held together by hydrophobicinteractions and hydrogen bonds. As in the other APstructures, there is a ﬂexible region known as the ﬂap whichprojects out over the cleft and encloses substrates...

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