Communication Commons^™

Inside Unlv, Diane Russell, Cate Weeks, Shane Bevell, Mamie Peers, Lori Bachand

Inside UNLV

No abstract provided.

Implicit Online Learning With Kernels, Li Cheng, S. V. N. Vishwanathan, Dale Schuurmans, Shaojun Wang, Terry Caelli

Kno.e.sis Publications

We present two new algorithms for online learning in reproducing kernel Hilbert spaces. Our first algorithm, ILK (implicit online learning with kernels), employs a new, implicit update technique that can be applied to a wide variety of convex loss functions. We then introduce a bounded memory version, SILK (sparse ILK), that maintains a compact representation of the predictor without compromising solution quality, even in non-stationary environments. We prove loss bounds and analyze the convergence rate of both. Experimental evidence shows that our proposed algorithms outperform current methods on synthetic and real data.

Regression Cubes With Lossless Compression And Aggregation, Yixin Chen, Guozhu Dong, Jiawei Han, Jian Pei, Benjamin W. Wah, Jianyong Wang

Kno.e.sis Publications

As OLAP engines are widely used to support multidimensional data analysis, it is desirable to support in data cubes advanced statistical measures, such as regression and filtering, in addition to the traditional simple measures such as count and average. Such new measures will allow users to model, smooth, and predict the trends and patterns of data. Existing algorithms for simple distributive and algebraic measures are inadequate for efficient computation of statistical measures in a multidimensional space. In this paper, we propose a fundamentally new class of measures, compressible measures, in order to support efficient computation of the statistical models. For …

Censorship By Proxy: The First Amendment, Internet Intermediaries, And The Problem Of The Weakest Link, Seth F. Kreimer

All Faculty Scholarship

The rise of the Internet has changed the First Amendment drama, for governments confront technical and political obstacles to sanctioning either speakers or listeners in cyberspace. Faced with these challenges, regulators have fallen back on alternatives, predicated on the fact that, in contrast to the usual free expression scenario, the Internet is not dyadic. The Internet's resistance to direct regulation of speakers and listeners rests on a complex chain of connections, and emerging regulatory mechanisms have begun to focus on the weak links in that chain. Rather than attacking speakers or listeners directly, governments have sought to enlist private actors …

Digital Radio Cultures In Europe: Progress To Date And Prospects For The Future:A Review Of Research Produced By Drace, Brian O'Neill, Stephen Lax

Conference Papers

Digital Radio Cultures in Europe (DRACE), was established in 2004 under the COST Action A20 “The Impact of the Internet on Mass Media in Europe”. The original configuration of the COST A20 group included provision for an internet and music research group but this was re-focussed following a re-organisation in which DRACE was more formally incorporated. The group comprises 14 researchers with specific interests in radio from Norway, Finland, Denmark, Greece, Germany, Hungary, Portugal, Croatia, the United Kingdom and Ireland. The objective of the research group is to be at the forefront of empirical research on changes in radio cultures …

Active Semantic Electronic Medical Record, Amit P. Sheth, Sangeeta Agrawal, Jonathan Lathem, Nicole Oldham, H. Wingate, K. Gallagher

Kno.e.sis Publications

The healthcare industry is rapidly advancing towards the widespread use of electronic medical records systems to manage the increasingly large amount of patient data and reduce medical errors. In addition to patient data there is a large amount of data describing procedures, treatments, diagnoses, drugs, insurance plans, coverage, formularies and the relationships between these data sets. While practices have benefited from the use of EMRs, infusing these essential programs with rich domain knowledge and rules can greatly enhance their performance and ability to support clinical decisions. Active Semantic Electronic Medical Record (ASEMR) application discussed here uses Semantic Web technologies to …

{Ontology: Resource} X {Matching : Mapping} X {Schema : Instance} :: Components Of The Same Challenge, Amit P. Sheth

Kno.e.sis Publications

Ontologies enable us to elevate syntactic and structural processing in an information system/Web to an information system/Web powered with semantic processing. Experience has shown that monolithic and tightly coupled approaches seldom succeed, and majority of information systems and applications will need to deal with plurality of ontologies in a loosely coupled environment (i.e., independently evolving ontologies and inter-ontology relationships, existence of different contexts for different users/applications etc.) Development of such loosely-coupled multi-ontology environments entails development of techniques for ontology mapping/alignment, multi-ontology query processing, and much more.

Inside Unlv, Cate Weeks, Brenda Griego, David Ashley, Mamie Peers, Shane Bevell, Gian Galassi

Inside UNLV

No abstract provided.

How To Reason With Owl In A Logic Programming System, Markus Krotzsch, Pascal Hitzler, Denny Vrandecic, Michael Sintek

Computer Science and Engineering Faculty Publications

Logic programming has always been a major ontology modeling paradigm, and is frequently being used in large research projects and industrial applications, e.g., by means of the F-Logic reasoning engine OntoBroker or the TRIPLE query, inference, and transformation language and system. At the same time, the Web Ontology Language OWL has been recommended by the W3C for modeling ontologies for the Web. Naturally, it is desirable to investigate the interoperability between both paradigms. In this paper, we do so by studying an expressive fragment of OWL DL for which reasoning can be reduced to the evaluation of Horn logic programs. …

On The Complexity Of Horn Description Logics, Markus Krotzsch, Sebastian Rudolph, Pascal Hitzler

Computer Science and Engineering Faculty Publications

Horn-SHIQ has been identified as a fragment of the description logic SHIQ for which inferencing is in PT_IME with respect to the size of the ABox. This enables reasoning with larger ABoxes in situations where the TBox is static, and represents one approach towards tractable description logic reasoning. In this paper, we show that reasoning in Horn-SHIQ, in spite of its low datacomplexity, is E_xpT_IME-hard with respect to the overall size of the knowledge base. While this result is not unexpected, the proof is not a mere modification of existing reductions since …

A Framework For Schema-Driven Relationship Discovery From Unstructured Text, Cartic Ramakrishnan, Krzysztof Kochut, Amit P. Sheth

Kno.e.sis Publications

We address the issue of extracting implicit and explicit relationships between entities in biomedical text. We argue that entities seldom occur in text in their simple form and that relationships in text relate the modified, complex forms of entities with each other. We present a rule-based method for (1) extraction of such complex entities and (2) relationships between them and (3) the conversion of such relationships into RDF. Furthermore, we present results that clearly demonstrate the utility of the generated RDF in discovering knowledge from text corpora by means of locating paths composed of the extracted relationships.

Oxford Internet Institute, Priscilla Finley

Library Faculty Publications

The Oxford Internet Institute hosts over 50 archived Webcasts of speakers, events, and conference sessions on Internet-related research and education intended to shape policy and practice.

Inside Unlv, Diane Russell, Shane Bevell, David Ashley, Cate Weeks, Jennifer Lawson

Inside UNLV

No abstract provided.

Inside Unlv, Diane Russell, Cate Weeks, David Ashley, Mamie Peers, Lori Bachand, Shane Bevell, Regina Vaccari, Jennifer Vaughan

Inside UNLV

No abstract provided.

Semantic Interoperability Of Web Services - Challenges And Experiences, Meenakshi Nagarajan, Kunal Verma, Amit P. Sheth, John A. Miller, Jonathan Lathem

Kno.e.sis Publications

With the rising popularity of Web services, both academia and industry have invested considerably in Web service description standards, discovery, and composition techniques. The standards based approach utilized by Web services has supported interoperability at the syntax level. However, issues of structural and semantic heterogeneity between messages exchanged by Web services are far more complex and crucial to interoperability. It is for these reasons that we recognize the value that schema/data mappings bring to Web service descriptions. In this paper, we examine challenges to interoperability; classify the types of heterogeneities that can occur between interacting services and present a possible …

Optimal Adaptation In Web Processes With Coordination Constraints, Kunal Verma, Prashant Doshi, Karthik Gomadam, John A. Miller, Amit P. Sheth

Kno.e.sis Publications

We present methods for optimally adapting Web processes to exogenous events while preserving inter-service constraints that necessitate coordination. For example, in a supply chain process, orders placed by a manufacturer may get delayed in arriving. In response to this event, the manufacturer has the choice of either waiting out the delay or changing the supplier. Additionally, there may be compatibility constraints between the different orders, thereby introducing the problem of coordination between them if the manufacturer chooses to change the suppliers. We focus on formulating the decision making models of the managers, who must adapt to external events while satisfying …

Flexible Querying Of Xml Documents, Krishnaprasad Thirunarayan, Trivikram Immaneni

Kno.e.sis Publications

Text search engines are inadequate for indexing and searching XML documents because they ignore metadata and aggregation structure implicit in the XML documents. On the other hand, the query languages supported by specialized XML search engines are very complex. In this paper, we present a simple yet flexible query language, and develop its semantics to enable intuitively appealing extraction of relevant fragments of information while simultaneously falling back on retrieval through plain text search if necessary. We also present a simple yet robust relevance ranking for heterogeneous document-centric XML.

Understanding Employees' Willingness To Contributeto Shared Electronic Databases: A Three-Dimensional Framework, Guowei Jian, Leo Wayne Jeffres

Communication Faculty Publications

Work organizations increasingly adopt shared electronic databases. However, employees' unwillingness to contribute to shared resources undermines the utility of such technologies. Current research is limited to either a utilitarian or normative perspective. To advance understanding in this area, this study proposes a three-dimensional framework. It includes the utilitarian and normative perspectives as two complementary dimensions in addition to a third collaborative dimension. Based on this framework, the study identifies three key organizational processes and advances an additive model to predict employees' willingness to contribute to shared electronic databases. An empirical test was conducted to assess the model in a large …

Major Literary Award Winners In The Medium-Sized Academic Library, Todd Spires

E-JASL 1999-2009 (Volumes 1-10)

Abstract

This article addresses the role of major literary award-winning books and authors in the medium-sized academic library. It details a study performed at Bradley University’s Cullom-Davis Library in early 2006. The project surveyed award-winning books held by the library at the time of the study. The purpose of the survey was to evaluate past selection performance of these materials, to provide data on items that the library needs to acquire and to encourage library faculty to watch for and make use of literary and other prize winning materials. The article describes the thought-process involved, the actual workflow and the …

Nurturing New Careers: Preparing Future Librarians For Their Careers Through Pre-Professional Development Sessions At The University Of Alabama Libraries, Brett Spencer, Allyson R. Ard

E-JASL 1999-2009 (Volumes 1-10)

Abstract

We describe a pre-professional development program for library school graduate assistants that helped participants learn career survival skills, gave them an overview of academic librarianship, and encouraged networking. Many intern or graduate assistant programs have focused on primary job training, but we know of few other assistantship programs featuring pre-professional development sessions on career survival skills like writing a CV or crafting a poster session. We discuss the structure, topics, and results of our program and provide suggestions for creating similar programs at other academic libraries.

Collegiality And The Academic Library, Michael Lorenzen

E-JASL 1999-2009 (Volumes 1-10)

Abstract

This paper examines the concept of collegiality and how it can be applied to academic libraries. This includes a definition of what collegiality is, a review of the library literature which describes how other writers have seen this issue, and a discussion of how collegiality can be applied in libraries. This includes an examination of how faculty in a library and faculty on other parts of campus work differently which makes collegiality more important in the library. It also looks at why collegiality is important in academic libraries where librarians work hand-in-hand with support staff and student employees.

Collaborative Role Of The Academic Librarian In Distance Learning - Analysis On An Information Literacy Tutorial In Webct, Xiaoli Shirley Fang

E-JASL 1999-2009 (Volumes 1-10)

Abstract

This article profiles a project to expand our general Information Literacy Tutorial into WebCT for students taking online courses. The Tutorial has provided online learners with a grasp of information competencies. The process of the project has confirmed the importance of academic librarians’ collaborative role in distance learning community. It presents both opportunities and challenges for academic librarians to collaborate with faculty and educational technology specialists in integrating information literacy education into the course management system. More active multi-aspect collaborations are required to ensure effective teaching information literacy via the courseware.

The Emerging Technology: 21st Century Web Based Environments And Their Resultant Effect On The Work Responsibilities Of Academic Reference Librarians Were The Predictions Correct?, Hope Marie Cook

E-JASL 1999-2009 (Volumes 1-10)

Abstract

This paper will examine the changing work responsibilities and required skills of academic reference librarians in the 21st century due to the evolving advancements in technology. For the purpose of the paper, the term “Web Based Environment” is defined as any library that utilizes local area networks, wide area networks, the Internet, and Intranets to make available electronic information resources. This access is made available to the user community. Utilization of these resources can be obtained both locally and remotely and, therefore, it is understood that the use of these sources may be executed by physically walking into a …

Inside Unlv, Cate Weeks, Shane Bevell, Diane Russell, Leora Baron

Inside UNLV

No abstract provided.

Querying Formal Contexts With Answer Set Programs, Pascal Hitzler, Markus Krotzsch

Computer Science and Engineering Faculty Publications

Recent studies showed how a seamless integration of formal concept analysis (FCA), logic of domains, and answer set programming (ASP) can be achieved. Based on these results for combining hierarchical knowledge with classical rule-based formalisms, we introduce an expressive common-sense query language for formal contexts. Although this approach is conceptually based on order-theoretic paradigms, we show how it can be implemented on top of standard ASP systems. Advanced features, such as default negation and disjunctive rules, thus become practically available for processing contextual data.

Experiences Of Interaction And Participation In Media Communication In A Digital Environment, Brian O'Neill

Conference Papers

Digital technologies, it is claimed, provide enhanced opportunities for interactivity and participatory engagement in media communication for ordinary audience members. Whether arising simply from the enhanced functionality offered to media consumers, or through utilising the various channels available to audiences to talk back to media providers, it would appear that audiences are empowered in new ways, previously unavailable in the analogue era. This paper examines what use ordinary audience members make of such opportunities. Drawing on a comparative study of layperson participation in broadcast media in three European countries (Norway, Portugal and Ireland), this paper presents findings from the study …

The High Cost Of Textbooks: A Convergence Of Academic Libraries, Campus Bookstores, Publishers?, John H. Pollitz, Anne Christie

E-JASL 1999-2009 (Volumes 1-10)

[First two paragraphs]

While the attention of Oregon State University librarians, like many others around the world, has been directed to the rising costs of journals and their impact on our resources, another form of inflation has been occurring which has a much more dramatic effect on the lives of our students. This is the spiraling inflation in the cost of textbooks. In this status report we discuss issues concerned with textbook costs on campus and the possible roles of the library.

The cost of textbooks is not a new concern for our students; it has been an ongoing issue …

Librarian Publishing Preferences And Open-Access Electronic Journals, Elaine Peterson

E-JASL 1999-2009 (Volumes 1-10)

Abstract

Librarians have often led the way in championing Open-Access (OA) journals on the Internet as an alternative to established journal titles that are subscription based. In the discipline of Library and Information Science, all types of journals continue to be published—paper and electronic, subscription-based and free. Using a survey, this article explores how some librarians view OA titles. The article collects suggestions for editors of OA journals. The article also asks questions about the relationship of OA journals to the promotion and tenure process for academic librarians.

Geospatial Ontology Development And Semantic Analytics, I. Budak Arpinar, Cartic Ramakrishnan, Molly Azami, Amit P. Sheth, E. Lynn Usery, Mei-Po Kwan

Kno.e.sis Publications

Geospatial ontology development and semantic knowledge discovery addresses the need for modeling, analyzing and visualizing multimodal information, and is unique in offering integrated analytics that encompasses spatial, temporal and thematic dimensions of information and knowledge. The comprehensive ability to provide integrated analysis from multiple forms of information and use of explicit knowledge make this approach unique. This also involves specification of spatiotemporal thematic ontologies and populating such ontologies with high quality knowledge. Such ontologies form the basis for defining the meaning of important relations terms, such as near or surrounded by, and enable computation of spatiotemporal thematic proximity measures we …

Optimal Adaptation Of Web Processes With Inter-Service Dependencies, Kunal Verma, Prashant Doshi, Karthik Gomadam, John A. Miller, Amit P. Sheth

Kno.e.sis Publications

We present methods for optimally adapting Web processes to exogenous events while preserving inter-service dependencies. For example, in a supply chain process, orders placed by the manufacturer may get delayed in arriving. In response to this event, the manufacturer has the choice of either waiting out the delay or changing the supplier. Additionally, there may be compatibility constraints between the different orders, thereby introducing the problem of coordination between them if the manufacturer chooses to change the suppliers. We present our methods within the framework of autonomic Web processes. This framework seeks to add properties of self-configuration, adaptation, and self-optimization …