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

... ISSUES IN NATURAL LANGUAGE ACCESS TO DATABASES FROM A LOGIC PROGRAMMING PERSPECTIVE David H D Warren Artificial Intelligence Center SRI International, Menlo Park, CA 94025, USA I INTRODUCTION ... permits data to be defined by general rules having the power of a fully general programming language. The logic programming approach therefore allows one to interface NL to general programs as well ... as to databases. Current Prolog systems, because they were designed with programming not databases in mind, are not capable of accommodating really large databases. However there seems to...

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

... two are labelled as negativewhile the last one is labelled as positive.Based on the training instances, a binary classiﬁercan be generated using any discriminative learningalgorithm. During ... and D) could possibly appear in the same rule. According to this rule, a pronominalmention should be linked with a partial entity whichcontains a named-entity and contains an indeﬁniteNP in ... training data.And each rule contains at most three predicates. To accommodate for coreference resolution, we loos-ened the restrictions to allow rules that have above50% accuracy and contain...

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

... they are standard usage for people who communicate with each other about drilling data, and any systss that claims t~o provide a natural language interface t~ l data base of drilling data must ... paper I examine the issue of whether or not it is possi- ble to build a natural language database access systee that achieves an acceptable level of per- formance without including domain-specific ... achieved by natural language database access sys- tems varies considerably, with the sore robust systems operating vithtn a narrow domain (i.e., content area) and relying heavily on domain-speci-...

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

... G. and Lewis, W. Transportable natural language interfaces to databases. Proceeaings of the 19th Annual Meetin 9 of the ACL. 1981. Kaplan, S. J. Cooperative responses from a portable natural ... SYSTEMS Although a wide class of applications are appropriate for menu-based natural language interfaces, our effort thus far has concentrated on building interfaces to relational databases. ... for a much broader class of users and applications to use menu-based, natural language interfaces to databases. 3. Features of NLMenu Interfaces to Databases The NLMenu system does not store...

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

... smallest change to the 11 must confess that I would have to include myself in any group claiming adherence to data base query as a unify=ng task. I am still actively working in the area, and to some ... favorite application for natural language interfaces has been data base query. Why? The reasons range from the relative simplicity of the task, including shallow semantic processing, to the ... 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...

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

... functioning sim- ply as an interface to an ordinary relational database. Having argued that significant work remains to be done in natural language processing as an interface to databases, I ... 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. Work on language universals gives ... solutions in an implementation which aspires to treatment of any sizable fragment of a lan- guage, even a single language like English. The degree of language- independence that a natural language...

Báo cáo khoa học: "EVALUATION OF NATURAL LANGUAGE INTERFACES TO DATABASE SYSTEMS: A PANEL DISCUSSION " ppt

... EVALUATION OF NATURAL LANGUAGE INTERFACES TO DATABASE SYSTEMS: A PANEL DISCUSSION Norman K. Sondheimer, Chair Sperry Univac Blue Bell, PA For a natural language access to database system ... this has begun to change. In the last several years, many of the current generation of natural language access to database systems have been subject to laboratory or field testing. These include ... important issues in the evaluation of natural language access to database systems. These include • 2. What has been learned about a) user needs, b) system's capabilities and c) their ~atch...

Tài liệu Báo cáo khoa học: "THEORETICAL/TECHNICAL ISSUES IN NATURAL LANGUAGE ACCESS TO DATABASES" pdf

... appropriate for that database organization. In this way, it would be easy to handle such database organ- izations as that in which the total number of parking lots and/or parking spaces is stored ... quantification are involved in a logical form, the corresponding quantification-indicating constructs to be used in the formal query language translation of that logical form is not at all ... necessary coverage to per- mit all the locutions that are natural in a given application. The formalism by which this is attempted is, once again, the transformational appa- ratus. Transformations...

Tài liệu Báo cáo khoa học: Phosphorylation of hormone-sensitive lipase by protein kinase A in vitro promotes an increase in its hydrophobic surface area ppt

... obtained using the sense primer 5¢ -ATC ATC TCCATC GAC TAC TCC CTG-3¢, the antisense primer5¢-AAG AATTCT AGA TTA ATG GTG ATG ATG GTGATG ATG GTG TGG GGT CAG CGG TGC AGC AGGGGG GGT-3¢ (XbaI ... by bis-ANS wasdecreased upon phosphorylation. A possible explana-tion for this apparent discrepancy could be that PKAphosphorylation induces a conformational change thatincreases the accessible ... surface area,enabling freer access to the lipid-binding site, in returnfor weaker binding. This is well in line with our recentkinetic measurements on human HSL, showing thatPKA phsophorylation...

Tài liệu Báo cáo khoa học: Reversible tetramerization of human TK1 to the high catalytic efﬁcient form is induced by pyrophosphate, in addition to tripolyphosphates, or high enzyme concentration ppt

... iscytosolic and its activity is absent in resting cells, appears in late G1,increases in S phase coinciding with the increase in DNA synthesis, anddisappears during mitosis. The ﬂuctuation ... and molecular mass analyses. Theactivity at saturating conditions was similar before andafter dilution, incubation and storage.Native molecular sizeThe apparent molecular size was determined ... non-radioactive nucleosides and molecularmass markers were purchased from Sigma-Aldrich (Copen-hagen, Denmark). Materials for cloning, PCR, DNA seq-uencing and assays were standard commercially...

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