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Showing 1,501 to 1,515 of 1,572 results Save | Export
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Craig, Scotty D.; Graesser, Arthur C.; Sullins, Jeremiah; Gholson, Barry – Journal of Educational Media, 2004
The role that affective states play in learning was investigated from the perspective of a constructivist learning framework. We observed six different affect states (frustration, boredom, flow, confusion, eureka and neutral) that potentially occur during the process of learning introductory computer literacy with AutoTutor, an intelligent…
Descriptors: Learning Processes, Natural Language Processing, Correlation, Constructivism (Learning)
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Deane, Paul; Sheehan, Kathleen M.; Sabatini, John; Futagi, Yoko; Kostin, Irene – Scientific Studies of Reading, 2006
One source of potential difficulty for struggling readers is the variability of texts across grade levels. This article explores the use of automatic natural language processing techniques to identify dimensions of variation within a corpus of school-appropriate texts. Specifically, we asked: Are there identifiable dimensions of lexical and…
Descriptors: Text Structure, Language Processing, Grade 6, Natural Language Processing
Wacholder, Nina; Evans, David K.; Klavans, Judith L. – 2001
The potential of automatically generated indexes for information access has been recognized for several decades, but the quantity of text and the ambiguity of natural language processing have made progress at this task more difficult than was originally foreseen. Recently, a body of work on development of interactive systems to support phrase…
Descriptors: Access to Information, Data Processing, Indexes, Information Seeking
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Turtle, Howard; Flood, James – Information Processing & Management, 1995
Discusses two query evaluation strategies used in large text retrieval systems: (1) term-at-a-time; and (2) document-at-a-time. Describes optimization techniques that can reduce query evaluation costs. Presents simulation results that compare the performance of these optimization techniques when applied to natural language query evaluation. (JMV)
Descriptors: Access to Information, Comparative Analysis, Cost Effectiveness, Evaluation Methods
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Strzalkowski, Tomek – Information Processing & Management, 1995
Describes an information retrieval system in which advanced natural language processing is used to enhance the effectiveness of term-based document retrieval by preprocessing the documents; discovering interterm dependencies and build a conceptual hierarchy specific to database domain; and processing the user's natural language requests into…
Descriptors: Databases, Information Processing, Information Retrieval, Information Seeking
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Maybury, Mark T. – Information Processing & Management, 1995
Describes and evaluates a system that selects key information from an event database by reasoning about event frequencies, frequencies of relations between events, and domain-specific importance measures. The system aggregates similar information and plans a summary tailored to a stereotypical user. (AEF)
Descriptors: Abstracting, Data Processing, Databases, Electronic Text
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Nerbonne, John; Dokter, Duco; Smit, Petra – Computer Assisted Language Learning, 1998
Reports on GLOSSER, an intelligent assistant for Dutch students learning to read French, and discusses the position of natural-language processing within computer-assisted instruction, using GLOSSER as an example. (Author/VWL)
Descriptors: Computer Assisted Instruction, Dutch, French, Morphology (Languages)
Bradshaw, Shannon; Hammond, Kristian – Proceedings of the ASIS Annual Meeting, 1999
Rosetta, an indexing and retrieval system indexes papers in a collection based on the way they have been described when referenced by other papers in the collection. Using Rosetta, simple natural language queries retrieve high-precision results in which descriptions based on citations clearly summarize retrieved papers, allowing users to quickly…
Descriptors: Citations (References), Document Delivery, Indexes, Indexing
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Graesser, Arthur C.; Person, Natalie K.; Jackson, G. Tanner; Toth, Jozsef A. – International Journal on E-Learning, 2004
The Human Use Regulatory Affairs Advisor (HURAA) is an Internet facility that provides help and training on the ethical use of human subjects in research, based on documents and regulations in United States Federal agencies. HURAA has a number of standard features of conventional web facilities and computer-based training, such as hypertext,…
Descriptors: Information Retrieval, Internet, Glossaries, Word Frequency
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Weber-Russell, Sylvia; LeBlanc, Mark D. – Journal of the Learning Sciences, 2004
"Learning by doing" in pursuit of real-world goals has received much attention from education researchers but has been unevenly supported by mathematics education software at the elementary level, particularly as it involves arithmetic word problems. In this article, we give examples of doing-oriented tools that might promote children's ability to…
Descriptors: Mathematical Formulas, Computer Software, Arithmetic, Natural Language Processing
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Gomez, Rebecca; Maye, Jessica – Infancy, 2005
We investigated the developmental trajectory of nonadjacent dependency learning in an artificial language. Infants were exposed to 1 of 2 artificial languages with utterances of the form [aXc or bXd] (Grammar 1) or [aXd or bXc] (Grammar 2). In both languages, the grammaticality of an utterance depended on the relation between the 1st and 3rd…
Descriptors: Age, Artificial Languages, Infants, Natural Language Processing
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Silvester, June P.; And Others – Information Processing and Management, 1994
Describes the National Aeronautics and Space Administration (NASA) Lexical Dictionary (NLD), a machine-aided indexing system used online at the NASA Center for AeroSpace Information (CASI). The functions of NLD system components are described in detail, and production and quality benefits resulting from machine-aided indexing at CASI are…
Descriptors: Automatic Indexing, Database Management Systems, Dictionaries, Evaluation
Feldman, Susan – Searcher, 2000
Discusses information retrieval systems and the need to have them adapt to user needs, integrate information in any format, reveal patterns and trends in information, and answer questions. Topics include statistics and probability; natural language processing; intelligent agents; concept mapping; machine-aided indexing; text mining; filtering;…
Descriptors: Automatic Indexing, Concept Mapping, Information Retrieval, Information Systems
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Liu, Geoffrey Z. – Journal of the American Society for Information Science, 1997
Presents the Semantic Vector Space Model, a text representation and searching technique based on the combination of Vector Space Model with heuristic syntax parsing and distributed representation of semantic case structures. In this model, both documents and queries are represented as semantic matrices, and retrieval is achieved by computing…
Descriptors: Heuristics, Information Retrieval, Mathematical Formulas, Matrices
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Kim, Jung Hee; Freedman, Reva; Glass, Michael; Evens, Martha W. – Discourse Processes: A Multidisciplinary Journal, 2006
We annotated transcripts of human tutoring dialogue for the purpose of constructing a dialogue-based intelligent tutoring system, CIRCSIM-Tutor. The tutors were professors of physiology who were also expert tutors. The students were 1st year medical students who communicated with the tutors using typed communication from separate rooms. The tutors…
Descriptors: Tutors, Tutoring, Physiology, Natural Language Processing
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