Applying semantic knowledge to the automatic processing of temporal expressions and events in natural language

This paper addresses the problem of the automatic recognition and classification of temporal expressions and events in human language. Efficacy in these tasks is crucial if the broader task of temporal information processing is to be successfully performed. We analyze whether the application of semantic knowledge to these tasks improves the performance of current approaches. We therefore present and evaluate a data-driven approach as part of a system: TIPSem. Our approach uses lexical semantics and semantic roles as additional information to extend classical approaches which are principally based on morphosyntax. The results obtained for English show that semantic knowledge aids in temporal expression and event recognition, achieving an error reduction of 59% and 21%, while in classification the contribution is limited. From the analysis of the results it may be concluded that the application of semantic knowledge leads to more general models and aids in the recognition of temporal entities that are ambiguous at shallower language analysis levels. We also discovered that lexical semantics and semantic roles have complementary advantages, and that it is useful to combine them. Finally, we carried out the same analysis for Spanish. The results obtained show comparable advantages. This supports the hypothesis that applying the proposed semantic knowledge may be useful for different languages.

How to make a natural language interface to query databases accessible to everyone: An example

Natural Language Interfaces to Query Databases (NLIDBs) have been an active research field since the 1960s. However, they have not been widely adopted. This article explores some of the biggest challenges and approaches for building NLIDBs and proposes techniques to reduce implementation and adoption costs. The article describes {AskMe*}, a new system that leverages some of these approaches and adds an innovative feature: query-authoring services, which lower the entry barrier for end users. Advantages of these approaches are proven with experimentation. Results confirm that, even when {AskMe*} is automatically reconfigurable against multiple domains, its accuracy is comparable to domain-specific NLIDBs.

Diversity for Texts Builds in Language L(MT): Indexes Based in Theory of Information

If one has a distribution of words (SLUNs or CLUNS) in a text written in language L(MT), and is adjusted one of the mathematical expressions of distribution that exists in the mathematical literature, some parameter of the elected expression it can be considered as a measure of the diversity. But because the adjustment is not always perfect as usual measure; it is preferable to select an index that doesn't postulate a regularity of distribution expressible for a simple formula. The problem can be approachable statistically, without having special interest for the organization of the text. It can serve as index any monotonous function that has a minimum value when all their elements belong to the same class, that is to say, all the individuals belong to oneself symbol, and a maximum value when each element belongs to a different class, that is to say, each individual is of a different symbol. It should also gather certain conditions like they are: to be not very sensitive to the extension of the text and being invariant to certain number of operations of selection in the text. These operations can be theoretically random. The expressions that offer more advantages are those coming from the theory of the information of Shannon-Weaver. Based on them, the authors develop a theoretical study for indexes of diversity to be applied in texts built in modeling language L(MT), although anything impedes that they can be applied to texts written in natural languages.

Diversity for Texts Builds in Language L(MT) II: Indexes Based in Abundances

One saw previously that indications of diversity IT and the one of Shannon permits to characterize globally by only one number one fundamental aspects of the text structure. However a more precise knowledge of this structure requires specific abundance distributions and the use, to represent this one, of a suitable mathematical model. Among the numerous models that would be either susceptible to be proposed, the only one that present a real convenient interest are simplest. One will limit itself to study applied three of it to the language L(MT): the log-linear, the log-normal and Mac Arthur's models very used for the calculation of the diversity of the species of ecosystems, and used, we believe that for the first time, in the calculation of the diversity of a text written in a certain language, in our case L(MT). One will show advantages and inconveniences of each of these model types, methods permitting to adjust them to text data and in short tests that permit to decide if this adjustment is acceptable.

Plant life in Alpine Switzerland; being an account in simple language of the natural history of Alpine plants.

Bibliography: p. 333-336.

The coder : a program module for code generation in high-level language compilers /

Originally presented as the author's thesis (M.S.), University of Illinois at Urbana-Champaign.

Report on Workshop on High Performance Computing and Communications for Grand Challenge Applications : computer vision, speech and natural language processing, and artificial intelligence /

Cover title.

The standard dictionary of facts; history, language, literature, biography, geography, travel, art, government, politics, industry, invention, commerce, science, education, natural history, statistics and miscellany,

Mode of access: Internet.

Palestine explored : with a view to its present natural features, and to the prevailing manners, customs, rites, and colloquial expressions of its people, which throw light on the figurative language of the Bible /

Includes bibliographical references and indexes.

Elements of physics; or, Natural philosophy, general and medical : written for universal use, in plain or non-technical language; and containing new disquistions and practical suggestions. Comprised in five parts. 1st. Somatology, statics, and dynamics. 2nd. Mechanics. 3rd Pneumatics, hydraulics, and acoustics. 4th. Heat and light. 5th. Animal and medical physics ... /

Mode of access: Internet.

Practical lessons in Welsh in imitation of the natural method of learning to speak a language.

Mode of access: Internet.

A manual of phonography, or, Writing by sound : a natural method of writing by signs that represent the sounds of language, and adapted to the English language as a complete system of phonetic shorthand /

Mode of access: Internet.

Plant life in Alpine Switzerland : being an account in simple language of the natural history of Alpine plants.

Bibliography: pages 333-335.

The evidences of the Christian religion, with additional discourses on the following subjects, viz: Of God, and his attributes. The power and wisdom of God in the creation. The providence of God. The worship of God. Advantages of revelation above natural reason. Excellency of the Christian institution. Dignity of the Scripture language. Against atheism and infidelity. Against the modern free-thinkers. Immortality of the soul, and a future state. Death and judgment.

Shaw-Shoemaker

The standard dictionary of facts; history, language, literature, biography, geography, travel, art, government, politics, industry, invention, commerce, science, education, natural history, statistics, miscellany; a practical handbook of ready reference based upon everyday needs,

Mode of access: Internet.