A5036787563- Semantic Web and Ontologies
- Information Retrieval and Search Behavior
- Natural Language Processing Techniques
- Biomedical Text Mining and Ontologies
- Advanced Text Analysis Techniques
- Topic Modeling
- Service-Oriented Architecture and Web Services
- Image Retrieval and Classification Techniques
- Advanced Database Systems and Queries
- Speech Recognition and Synthesis
- Library Science and Information Systems
- Lexicography and Language Studies
- Speech and dialogue systems
- Health Sciences Research and Education
- Big Data and Business Intelligence
- Data Quality and Management
- Oral History, Memory, Narrative Analysis
- Digital Humanities and Scholarship
- Video Analysis and Summarization
- Smart Cities and Technologies
- Music and Audio Processing
- Digital and Traditional Archives Management
- linguistics and terminology studies
- Usability and User Interface Design
- Advanced Image and Video Retrieval Techniques
University at Buffalo, State University of New York
2010-2023
University of Maryland, College Park
1999-2015
University of Maryland, Baltimore County
2004
Center for Food Safety and Applied Nutrition
1988
Beltsville Human Nutrition Research Center
1988
Agricultural Research Service
1988
Article Free Access Share on A self-organizing semantic map for information retrieval Authors: Xia Lin College of Library and Information Services, University Maryland, Park, Maryland MarylandView Profile , Dagobert Soergel Gary Marchionini Authors Info & Claims SIGIR '91: Proceedings the 14th annual international ACM conference Research development in retrievalSeptember 1991 Pages 262–269https://doi.org/10.1145/122860.122887Online:01 September 1991Publication History...
This article proposes a model of document selection by real users bibliographic retrieval system. It reports on Part 1 longitudinal study decision making use academics during an actual research project. (Part 2 followed up the same how selected documents were actually used in subsequent stages.) The participants are 25 self-selected faculty and graduate students Agricultural Economics. After reference interview, researcher conducted search DIALOG databases prepared printout. from this...
This article proposes a model of document selection by real users bibliographic retrieval system. It reports on Part 1 longitudinal study decision making use academics during an actual research project. (Part 2 followed up the same how selected documents were actually used in subsequent stages.) The participants are 25 self-selected faculty and graduate students Agricultural Economics. After reference interview, researcher conducted search DIALOG databases prepared printout. from this...
Much is known about the design of automated systems to search broadcast news, but it has only recently become possible apply similar techniques large collections spontaneous speech. This paper presents initial results from experiments with speech recognition, topic segmentation, categorization, and named entity detection using a collection recorded oral histories. The work leverages massive manual annotation effort on 10 000 h evaluate degree which automatic recognition (ASR)-based...
This review introduces a comprehensive model of the cognitive process and mechanisms individual sensemaking to provide theoretical basis for: empirical studies that improve our understanding integration results such studies; education in critical thinking skills; design assistant tools support guide users. The paper reviews extends existing models with ideas from learning cognition. It literature on human‐computer interaction ( HCI ), system engineering, organizational communication, library...
Classifications/ontologies, thesauri, and dictionaries serve many functions, which are summarized in this note. As a result of multiplicity classifications—often called ontologies—are developed communities research practice. Unfortunately, there is little communication mutual learning; thus, efforts fragmented, resulting considerable reinvention less than optimal products.
Abstract This article presents a conceptual framework for the organization of factors (independent variables) affecting online bibliographic retrieval; variables were collected from major sources. The first part describes various roles that play in research study. second gives with examples individual illustration. We consider following elements total retrieval situation: setting, user, request, database, search system, searcher, process, and outcome. For each these (excluding outcome)...
This article presents a logical analysis of the characteristics indexing and their effects on retrieval performance. It establishes ability to ask questions one needs as foundation performance evaluation, recall discrimination basic quantitative measures for binary noninteractive systems. then defines that affect retrieval—namely, devices, viewpoint-based importance-based exhaustivity, specificity, correctness, consistency—and examines in detail retrieval. concludes depends chiefly match...
Abstract This paper presents a first step toward systematic framework for organizing numerous task characteristics or variables that are important in studying the effect of on information behavior. The discusses issues related to selecting, operationalizing, and measuring be used as independent variables. It assembles list classifications based identify potential study also addresses research design seeking performance. Finally, it summarizes findings about relationship between particular...
Synthesizing and building on many ideas from the literature, this article presents an improved conceptual framework that clarifies notion of relevance with its elements, variables, criteria, situational factors. Relevance is defined as a Relationship ( R ) between Information Object I Need N (which consists Topic, User, Problem/Task, Situation/Context) focus . This defines Relevance‐as‐is (conceptual relevance, strong relevance). To determine Agent A (a person or system) operates...
Tools for automatic subject assignment help deal with scale and sustainability in creating enriching metadata, establishing more connections across between resources enhancing consistency. Although some software vendors experimental researchers claim the tools can replace manual indexing, hard scientific evidence of their performance operating information environments is scarce. A major reason this that research usually conducted laboratory conditions, excluding complexities real‐life...
Article Multimodal surrogates for video browsing Share on Authors: Wei Ding College of Library & Info. Services, University Maryland, Park, MD MDView Profile , Gary Marchionini School Science, North Carloina Chapel Hill, NC NCView Dagobert Soergel Authors Info Claims DL '99: Proceedings the fourth ACM conference Digital librariesAugust 1999 Pages 85–93https://doi.org/10.1145/313238.313266Online:01 August 1999Publication History 37citation751DownloadsMetricsTotal Citations37Total...
Test collections model use cases in ways that facilitate evaluation of information retrieval systems. This paper describes the search-guided relevance assessment to create a test collection for spontaneous conversational speech. Approximately 10,000 thematically coherent segments were manually identified 625 hours oral history interviews with 246 individuals. Automatic speech recognition results, prepared summaries, controlled vocabulary indexing, and name authority control are available...
The construction of knowledge representations during sensemaking resembles meaningful learning in which conceptual changes to structure take place various forms. Guided by a cognitive process model expanding prior models with ideas from and psychology, we conducted qualitative user study 15 participants news writing business analysis tasks investigate the evolvement their structures. We collected analysed think-aloud protocols along recorded screen activities, intermediate work products...
Throughout an information search, a user needs to make sense of the found create understanding. This requires cognitive effort that can be demanding. Building on prior sensemaking models and expanding them with ideas from learning psychology, we examined use mechanisms during individual sensemaking. We conducted qualitative study 15 students who searched for made business analysis news writing tasks. Through think‐aloud protocols, recordings screen movements, intermediate work products...
The translational research community, in general, and the Clinical Translational Science Awards (CTSA) particular, share vision of repurposing EHRs for that will improve quality clinical practice. Many members these communities are also aware electronic health records (EHRs) suffer limitations data becoming poorly structured, biased, unusable out original context. This creates obstacles to continuity care, utility, improvement, research. Analogous sharing objective other areas natural...