Social and Behavioral Sciences Commons^™

Extracting Reduced Logic Programs From Artificial Neural Networks, Jens Lehmann, Sebastian Bader, Pascal Hitzler

Computer Science and Engineering Faculty Publications

Artificial neural networks can be trained to perform excellently in many application areas. While they can learn from raw data to solve sophisticated recognition and analysis problems, the acquired knowledge remains hidden within the network architecture and is not readily accessible for analysis or further use: Trained networks are black boxes. Recent research efforts therefore investigate the possibility to extract symbolic knowledge from trained networks, in order to analyze, validate, and reuse the structural insights gained implicitly during the training process. In this paper, we will study how knowledge in form of propositional logic programs can be obtained in such …

Integrating First-Order Logic Programs And Connectionist Systems - A Constructive Approach, Sebastian Bader, Andreas Witzel, Pascal Hitzler

Computer Science and Engineering Faculty Publications

Significant advances have recently been made concerning the integration of symbolic knowledge representation with artificial neural networks (also called connectionist systems). However, while the integration with propositional paradigms has resulted in applicable systems, the case of first-order knowledge representation has so far hardly proceeded beyond theoretical studies which prove the existence of connectionist systems for approximating first-order logic programs up to any chosen precision. Advances were hindered severely by the lack of concrete algorithms for obtaining the approximating networks which were known to exist: the corresponding proofs are not constructive in that they do not yield concrete methods for building …

Ontology Learning As A Use-Case For Neural-Symbolic Integration, Pascal Hitzler, Sebastian Bader, Artur Garcez

Computer Science and Engineering Faculty Publications

We argue that the field of neural-symbolic integration is in need of identifying application scenarios for guiding further research. We furthermore argue that ontology learning - as occurring in the context of semantic technologies - provides such an application scenario with potential for success and high impact on neural-symbolic integration.

Accessing The Spoken Word, Jerry Goldman, Steve Renals, Steven Bird, Franciska De Jong, Marcello Federico, Carl Fleischhauer, Mark Kornbluh, Lori Lamel, Douglas W. Oard, Claire Stewart, Richard Wright

UNL Libraries: Faculty Publications

Spoken-word audio collections cover many domains, including radio and television broadcasts, oral narratives, governmental proceedings, lectures, and telephone conversations. The collection, access, and preservation of such data is stimulated by political, economic, cultural, and educational needs. This paper outlines the major issues in the field, reviews the current state of technology, examines the rapidly changing policy issues relating to privacy and copyright, and presents issues relating to the collection and preservation of spoken audio content.

Enterprise Applications Of Semantic Web: The Sweet Spot Of Risk And Compliance, Amit P. Sheth

Kno.e.sis Publications

Semantic Web is in the transition from vision and research to reality. In this early state, it is important to study the technical capabilities in the context of real-world applications, and how applications built using the Semantic Web technology meet the real market needs. Beyond push from research, it is the market pull and the ability of the technology to meet real business needs that is a key to ultimate success of any technology. In this paper, we discuss the market of Risk and Compliance which presents unique market opportunity combined with challenging technical requirements. We discuss how the Semantic …

Peer-To-Peer Discovery Of Semantic Associations, Matthew Perry, Maciej Janik, Cartic Ramakrishnan, Conrad Ibanez, I. Budak Arpinar, Amit P. Sheth

Kno.e.sis Publications

The Semantic Web vision promises an extension of the current Web in which all data is annotated with machine understandable metadata. The relationship-centric nature of this data has led to the definition of Semantic Associations, which are complex relationships between resources. Semantic Associations attempt to answer queries of the form “how are resource A and resource B related?” Knowing how two entities are related is a crucial question in knowledge discovery applications. Much the same way humans collaborate and interact to form new knowledge, discovery of Semantic Associations across repositories on a peer-to-peer network can allow peers to share their …

Change And Connections: Passion And Organizational Change, Lynn Baird

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

First paragraph:

Librarians are change agents, working in an environment that requires us to be both leading and chasing change. We lead change when we create programs to meet our institutional needs based upon our knowledge of our students and faculty, available resources, and our awareness of the potential for what might be. We chase change when institutional priorities shift suddenly, in response to external forces such as funding or politics, or as a result of leadership transitions. Change can be invigorating for us as it keeps the creative juices flowing. Conversely, it can be exhausting when we feel as …

Papa's Got A Brand New (Virtual) Bag: Real-Time Chat And Reference Discourse, Darren Chase

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

Abstract

Many librarians agree that virtual reference has expanded the range of library reference services. Along with an expansion of reference service, virtual reference (especially real-time chat) has influenced reference discourse. Style characteristics of chat include its telegraphic brevity, its conversational and informal tone, and its tendency towards interview and exchange. A bedrock feature of traditional reference service is the reference interview-as this and other aspects of reference exchange are conversational, chat is exceptionally resonant within the continuum of reference services. The virtual reference librarian operates in a medium both familiar and leading-edge (a bridge between the traditional and the …

Aligning Campus Portals With Learners’ Needs: A Preliminary Study On The Implementation Of Campus Portals In Iranian Higher Education Communities, Alireza Hejazi, Mitra Dilmaghani

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

Abstract

Effectively developing and deploying campus portals can dramatically increase productivity and profitability of research and education. The cutting edge of this initiative lies in aligning portals with students’ current needs. Our study aims at identifying these needs and provides a preliminary theoretical framework for portal developers to benchmark their objectives according to educational requirements. The study is mostly done based on local observations and experience of its conductors within higher education communities in Iran. The result of this primary study paves the way of implementing campus portals in the Iranian higher education communities which will be paced by the …

Teaching Information Literacy To The Advanced Writing Class In Three Sessions, Colleen Kennedy

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

Introduction

As is the case at many universities, Northern Kentucky University’s Advanced Writing class is often thought of as the “Research Paper class.” Frequently, a research paper on a variety of topics is the capstone of the course and many of the other course assignments lead up to it. Students are usually brought to Steely Library for one class during the semester to be taught all the information competencies deemed necessary in one session. The classes are from 50 minutes to 75 minutes long.

The pilot program described here was a first attempt at an informal trial to determine whether …

Cross-Disciplinary Prospecting: Educational Technology Offers Up Gold For Library And Information Science Curricula, Michael J. Miller

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

Abstract

This article provides an overview of the current trends in information and communication technology affecting library services and recommends how, because of these trends, library and information science (LIS) curricula should turn an inquisitive, interdisciplinary eye toward the field of educational technology. Gaps in current LIS professional training and practice are cited, curriculum standards in LIS and educational technology programs are described and compared, and examples are presented to demonstrate how educational technology pedagogy and practice help to successfully augment library skills, service, and practice.

Information And Communication Technologies And The Effects Of Globalization: Twenty-First Century “Digital Slavery” For Developing Countries—Myth Or Reality?, L. A. Ogunsola

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

Abstract

The main goal of this paper is to examine the ICT (Information and Communication Technology) revolution and the concept of globalization as they effect developing countries. Globalization as one of the reasons for possible widening of the gap between the poor and the rich nations was examined and the emerging concept of “digital slavery” was carefully evaluated. The wide gap in availability and use of ICTs across the world and the influences ICTs exert on globalization at the expense of developing countries were carefully examined and suggestions and necessary policies were offered for developing countries to leap-frog the industrialization …

Differences In Indexing Term Vocabularies And Agreement With Subject Specialists, John M. Weiner

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

Abstract

Index terms are an important component in considering a scientific topic. In a real sense, the indexing terms represent the vocabulary and language of the topic. Study of these critical terms has employed human and machine techniques. Computerized indexing systems can accurately and completely recognize terms, but the different strategies for organizing and evaluating the concepts (i.e., informative terms) and related issues may not be effective in accomplishing the desired descriptive actions. This paper explored the results of two computer supported approaches in indexing scientific documents against a background of simple random generation of informative terms in varying sized …

A Semantic Template Based Designer For Semantic Web Processes, Ranjit Mulye, John A. Miller, Kunal Verma, Karthik Gomadam, Amit P. Sheth

Kno.e.sis Publications

The growing popularity of service oriented computing based on Web services standards is creating a need for paradigms to represent and design business processes. Significant work has been done in the representation aspects with regards to WSBPEL. However, design and modeling of business processes is still an open issue. In this paper, we present a novel designer for business processes, which allows for intuitive modeling of Web processes, as well as using a template based approach for semi-automatically integrating partners either at design time or at deployment time. This work has been done as part of the METEOR-S project, which …

On Embedding Machine-Processable Semantics Into Documents, Krishnaprasad Thirunarayan

Kno.e.sis Publications

Most Web and legacy paper-based documents are available in human comprehensible text form, not readily accessible to or understood by computer programs. Here, we investigate an approach to amalgamate XML technology with programming languages for representational purposes that can enhance traceability, thereby facilitating semiautomatic extraction and update. Specifically, we propose a modular technique to embed machine-processable semantics into a text document with tabular data via annotations, resulting sometimes in ill-formed XML fragments, and evaluate this technique vis a vis document querying, manipulation, and integration. The ultimate aim is to be able to author and extract human-readable and machine-comprehensible parts of …

Inside Unlv, Cate Weeks, Diane Russell, Erin O'Donnell, Carol C. Harter, Mark Wallington

Inside UNLV

No abstract provided.

Faster Owl Using Split Programs, Denny Vrandecic, Pascal Hitzler

Computer Science and Engineering Faculty Publications

Knowledge representation and reasoning on the Semantic Web is done by means of ontologies. While the quest for suitable ontology languages is still ongoing, OWL [5] has been established as a core standard. It comes in three flavours, as OWL Full, OWL DL and OWL Lite, where OWL Full contains OWL DL, which in turn contains OWL Lite. The latter two coincide semantically with certain description logics and can thus be considered fragments of first-order predicate logic.

Morphisms In Context, Markus Krotzsch, Guo-Qiang Zhang, Pascal Hitzler

Computer Science and Engineering Faculty Publications

Morphisms constitute a general tool for modelling complex relationships between mathematical objects in a disciplined fashion. In Formal Concept Analysis (FCA), morphisms can be used for the study of structural properties of knowledge represented in formal contexts, with applications to data transformation and merging. In this paper we present a comprehensive treatment of some of the most important morphisms in FCA and their relationships, including dual bonds, scale measures, infomorphisms, and their respective relations to Galois connections. We summarize our results in a concept lattice that cumulates the relationships among the considered morphisms. The purpose of this work is to …

A Modular Approach To Document Indexing And Semantic Search, Dhanya Ravishankar, Krishnaprasad Thirunarayan, Trivikram Immaneni

Kno.e.sis Publications

This paper develops a modular approach to improving effectiveness of searching documents for information by reusing and integrating mature software components such as Lucene APIs, WORDNET, LSA techniques, and domain-specific controlled vocabulary. To evaluate the practical benefits, the prototype was used to query MEDLINE database, and to locate domain-specific controlled vocabulary terms in Materials and Process Specifications. Its extensibility has been demonstrated by incorporating a spell-checker for the input query, and by structuring the retrieved output into hierarchical collections for quicker assimilation. It is also being used to experimentally explore the relationship between LSA and document clustering using 20-mini-newsgroups and …

Social Network Discovery By Mining Spatio-Temporal Events, Hady Lauw, Ee Peng Lim, Hwee Hwa Pang, Teck-Tim Tan

Research Collection School Of Computing and Information Systems

Knowing patterns of relationship in a social network is very useful for law enforcement agencies to investigate collaborations among criminals, for businesses to exploit relationships to sell products, or for individuals who wish to network with others. After all, it is not just what you know, but also whom you know, that matters. However, finding out who is related to whom on a large scale is a complex problem. Asking every single individual would be impractical, given the huge number of individuals and the changing dynamics of relationships. Recent advancement in technology has allowed more data about activities of individuals …

Lifecycle Of Semantic Web Processes, Jorge Cardoso, Chistoph Bussler, Amit P. Sheth

Kno.e.sis Publications

This tutorial presents what can be achieved by symbiotic synthesis of two of the most important research and technology application areas: Web Services and the Semantic Web. It presents the more recent evolution of the Web Service platform towards rich Web Service and process model annotation, and explores some of the promises and challenges in applying semantics to each of the steps in the Semantic Web Process lifecycle.

Web Service Semantics - Wsdl-S, Rama Akkiraju, Joel Farrell, John A. Miller, Meenakshi Nagarajan, Amit P. Sheth, Kunal Verma

Kno.e.sis Publications

Web services have primarily been designed for providing inter-operability between business applications. Current technologies assume a large amount of human interaction, for integrating two applications. This is primarily due to the fact that business process integration requires understanding of data and functions of the involved entities. Semantic Web technologies, powered by description logic based languages like OWL[1], aim to add greater meaning to Web content, by annotating the data with ontologies. Ontologies provide a mechanism of providing shared conceptualizations of domains. This allows agents to get an understanding of users’ Web content and greatly reduces human interaction for meaningful Web …

Semantic Management Of Web Services Using The Core Ontology Of Services, Daniel Oberle, Steffen Lamparter, Andreas Eberhart, Stephan Grimm, Sudhir Agarwal, Rudi Studer, Pascal Hitzler

Kno.e.sis Publications

Different Web Service standards like WSDL, WS-Security, WS-Policy etc., henceforth referred to as WS*, factorize Web Service management tasks into different aspects, such as input/output, workflow, or security. The advantages of WS* are multiple and have already achieved industrial impact. WS* descriptions are exchangeable and developers may use different implementations for the same Web Service description. The disadvantages of WS*, however, are also apparent: even though the different standards are complementary, they must overlap and one may produce models composed of different WS* descriptions, which are inconsistent with each other, but the reasons for the inconsistencies are not easily determined. …

Ga-Facilitated Classifier Optimization With Varying Similarity Measures, Michael R. Peterson, Travis E. Doom, Michael L. Raymer

Kno.e.sis Publications

Genetic algorithms are powerful tools for k-nearest neighbors classification. Traditional knn classifiers employ Euclidian distance to assess neighbor similarity, though other measures may also be used. GAs can search for optimal linear weights of features to improve knn performance using both Euclidian distance and cosine similarity. GAs also optimize additive feature offsets in search of an optimal point of reference for assessing angular similarity using the cosine measure. This poster explores weight and offset optimization for knn with varying similarity measures, including Euclidian distance (weights only), cosine similarity, and Pearson correlation. The use of offset optimization …

Description Logic Programs: A Practical Choice For The Modelling Of Ontologies, Rudi Studer, York Sure, Pascal Hitzler

Computer Science and Engineering Faculty Publications

Knowledge representation using ontologies constitutes the heart of semantic technologies. Despite successful standardization efforts by the W3C, however, there are still numerous different ontology representation languages being used, and interoperability between them is in general not given. The problem is aggrevated by the fact that current standards lay foundations only and are well-known to be insufficient for the modelling of finer details. Thus, a plethora of extensions of the basic languages is being proposed, rendering the picture of ontology representation languages to be chaotic, to say the least. While semantic technologies start to become applicable and are being applied in …

Integrating Semantic Web Services For Mobile Access, Anupriya Ankolekar, Pascal Hitzler, Holger Lewen, Daniel Oberle, Rudi Studer

Computer Science and Engineering Faculty Publications

We present our work in integrating Semantic Web services for access via mobile devices. We have developed a system, the WebServiceAccessComponent, that transforms a user request for a service on a mobile device, to a Web service request and then selects a matching service from the existing Web services of the Deutsche Telekom, which provide navigational and weather information. In this poster, we present the requirements and design of the WebServiceAccessComponent.

Play And Technology:A Study Of Icts In Play Activities Of Irish Children (4-8 And 8-12), Brian O'Neill, Noirin Hayes, Stella Downey

Conference Papers

Defined in the Ireland’s national play policy as ‘freely chosen, personally directed, intrinsically motivated behaviour that actively engages the child’ (NCO, 2004, p.10), play now more often than not is a technologically-mediated activity. This paper focuses on the role of technology in play and explores the impact of technological change on children’s play activities. Drawing on our study commissioned by Ireland’s National Children’s Office, we present a detailed exploration of the play activities of Irish children, identifying the range of technologies accessed by children and how they are used in their daily play patterns. The project provided children with an …

Are These Victims Worthy?, Erik Ugland, Karen Slattery

Erik Ugland

No abstract provided.

Broadband Penetration: An Empirical Analysis Of State And Federal Policies, Scott J. Wallsten

Scott J. Wallsten

No abstract provided.

Inside Unlv, Erin O'Donnell, Diane Russell, Carol C. Harter

Inside UNLV

No abstract provided.