BibSonomy publications for /author/CassidySat Feb 11 19:24:16 CET 2012Journal of the American Society for Information Science and Technology91849--1866Modeling topic and community structure in social tagging: The TTR-LDA-Community model622011imported The presence of social networks in complex systems has made networks and community structure a focal point of study in many domains. Previous studies have focused on the structural emergence and growth of communities and on the topics displayed within the network. However, few scholars have closely examined the relationship between the thematic and structural properties of networks. Therefore, this article proposes the Tagger Tag Resource-Latent Dirichlet Allocation-Community model (TTR-LDA-Community model), which combines the Latent Dirichlet Allocation (LDA) model with the Girvan-Newman community detection algorithm through an inference mechanism. Using social tagging data from Delicious, this article demonstrates the clustering of active taggers into communities, the topic distributions within communities, and the ranking of taggers, tags, and resources within these communities. The data analysis evaluates patterns in community structure and topical affiliations diachronically. The article evaluates the effectiveness of community detection and the inference mechanism embedded in the model and finds that the TTR-LDA-Community model outperforms other traditional models in tag prediction. This has implications for scholars in domains interested in community detection, profiling, and recommender systems.Mon Feb 06 16:17:24 CET 2012Child Development2350--365Loneliness and Peer Relations in Young Children631992TASB scale Tue Jan 17 00:00:00 CET 2012eScienceconf/eScience/201170-76Wireless Sensing Networks for Environmental Monitoring: Two Case Studies from Tropical Forests.2011dblp Thu Jan 05 00:00:00 CET 2012Australasian Database Conference12-20Querying Databases of Annotated Speech.2000dblp Wed Dec 21 00:00:00 CET 2011INTERSPEECHconf/interspeech/2011841-844Building an Audio-Visual Corpus of Australian English: Large Corpus Collection with an Economical Portable and Replicable Black Box.2011dblp Tue Dec 20 00:00:00 CET 2011DSNconf/dsn/2002478-482Advanced Pattern Recognition for Detection of Complex Software Aging Phenomena in Online Transaction Processing Servers.2002dblp Tue Dec 06 12:27:52 CET 2011Journal of Informetrics1140 - 153Topics in dynamic research communities: An exploratory study for the field of information retrieval62012Ko-Autoren entwicklung netzwerke Research topics and research communities are not disconnected from each other: communities and topics are interwoven and co-evolving. Yet, scientometric evaluations of topics and communities have been conducted independently and synchronically, with researchers often relying on homogeneous unit of analysis, such as authors, journals, institutions, or topics. Therefore, new methods are warranted that examine the dynamic relationship between topics and communities. This paper examines how research topics are mixed and matched in evolving research communities by using a hybrid approach which integrates both topic identification and community detection techniques. Using a data set on information retrieval (IR) publications, two layers of enriched information are constructed and contrasted: one is the communities detected through the topology of coauthorship network and the other is the topics of the communities detected through the topic model. We find evidence to support the assumption that IR communities and topics are interwoven and co-evolving, and topics can be used to understand the dynamics of community structures. We recommend the use of the hybrid approach to study the dynamic interactions of topics and communities.Mon Dec 05 00:00:00 CET 2011CoRRQuerying Databases of Annotated Speechcs.CL/02040262002dblp Tue Nov 15 00:00:00 CET 2011DACconf/dac/20011-2Panel: The Electronics Industry Supply Chain: Who Will Do What?2001dblp Tue Nov 08 00:00:00 CET 2011First Monday1Outside influences: Extramedia forces and the newsworthiness conceptions of online newspaper journalists.132008dblp Fri Nov 04 00:00:00 CET 2011Computers & Geosciences91135-1144Optimising GPR modelling: A practical, multi-threaded approach to 3D FDTD numerical modelling.362010dblp Mon Oct 31 00:00:00 CET 2011JASIST101933-1953The cognitive structure of Library and Information Science: Analysis of article title words.622011dblp Fri Oct 21 00:00:00 CEST 2011Mach. Vis. Appl.6343-355A machine vision system for quantifying velocity fields in complex rock models.162006dblp Fri Oct 21 00:00:00 CEST 2011ICIP (1)285-288Estimating fluid flow velocities: an image analysis approach.2001dblp Thu Sep 15 00:00:00 CEST 2011CISSconf/ciss/2009482-487Analytical methods for the design and optimization of chip-multiprocessor architectures.2009dblp Mon Sep 12 00:00:00 CEST 2011JASIST91849-1866Modeling topic and community structure in social tagging: The TTR-LDA-Community model.622011dblp Mon Sep 12 00:00:00 CEST 2011JASIST91808-1828Academic genealogy as an indicator of interdisciplinarity: An examination of dissertation networks in Library and Information Science.622011dblp Fri Sep 09 00:00:00 CEST 2011Applied Ontology2203-211The 2006 Upper Ontology Summit Joint Communiqué.12006dblp Fri Sep 02 00:00:00 CEST 2011DATEconf/date/20111095-1100A high-level analytical model for application specific CMP design exploration.2011dblp Thu Aug 11 00:00:00 CEST 2011JASIST81498-1514Institutional interactions: Exploring social, cognitive, and geographic relationships between institutions as demonstrated through citation networks.622011dblp