Digital Commons Network^™

A Polarizable Molecular Dynamics Potential For Molten Salt Property Prediction, Jared Thurgood

Theses and Dissertations

The present study attempts to find an alternate computational tool to model the complex physical interactions within the molten salt FLiNaK in a way that is both efficient and accurate. Additionally, this study seeks to describe the effects of several different types of impurities on the FLiNaK salt system. This study selects two different polarizable force fields, the AMOEBA polarizable approach and the polarizable ion model, to determine the density and the structure of the impure FLiNaK salt mixtures at typical operating temperatures in molten salt reactors (between 500-900 °C). This study conducts ab initio molecular dynamics (AIMD) simulations and …

Bitrdf: Extending Rdf For Bitemporal Data, Di Wu

Dissertations, Theses, and Capstone Projects

The Internet is not only a platform for communication, transactions, and cloud storage, but it is also a large knowledge store where people as well as machines can create, manipulate, infer, and make use of data and knowledge. The Semantic Web was developed for this purpose. It aims to help machines understand the meaning of data and knowledge so that machines can use the data and knowledge in decision making. The Resource Description Framework (RDF) forms the foundation of the Semantic Web which is organized as the Semantic Web Layer Cake. RDF is limited and can only express a binary …

Translating Natural Language Queries To Sparql, Shreya Satish Bhajikhaye

Master's Projects

The Semantic Web is an extensive knowledge base that contains facts in the form of RDF
triples. These facts are not easily accessible to the average user because to use them requires
an understanding of ontologies and a query language like SPARQL. Question answering systems
form a layer of abstraction on linked data to overcome these issues. These systems allow the
user to input a question in a natural language and receive the equivalent SPARQL query. The
user can then execute the query on the database to fetch the desired results. The standard
techniques involved in translating natural language questions …

A Methodology For Transforming Marc21 Personal Name Authority Metadata Into Linked Open Data With Integration Of Viaf And Lcnaf Datasets: An Experimental Study, Subhendu Kar, Rajesh Das

Library Philosophy and Practice (e-journal)

The scope and application of present web technology in the library and information sector have been increasingly transforming in terms of storage, processing, and delivery of services. Libraries, information centers, archives, museums, etc. are being driven to add meaningful and interoperable web-based library services to address the growing information needs of the users. One of the major developments in recent times is the adoption of semantic web technologies in providing web-based library services. Semantic web technology is an advanced web interface that offers structured web-based data and allows organizations or institutions to describe, communicate, retrieve and re-distribute over the web. …

Producing Linked Open Dataset From Bibliographic Data With Integration Of External Data Sources For Academic Libraries, Biswajit Saha, Dr. Rajesh Das

Library Philosophy and Practice (e-journal)

This paper has focused on transformation of bibliographic data to linked open data (LOD) as RDF(Resource Description Framework) triple model with integration of external resources. Library & Information centres and knowledge centres deal with various types of databases like bibliographic databases, full text databases, archival databases, statistical databases, CD/DVD ROM databases and more. Presently, web technology changes storing, processing, and disseminating services rapidly. The semantic web technology is an advance technology of web platform which provides structured data on web for describing and retrieving by the organization or institutions. It may provide more information from other external resources to the …

Valid Time Rdf, Hsien-Tseng Wang

Dissertations, Theses, and Capstone Projects

The Semantic Web aims at building a foundation of semantic-based data models and languages for not only manipulating data and knowledge, but also supporting decision making by machines. Naturally, time-varying data and knowledge are required in Semantic Web applications to incorporate time and further reason about it. However, the original specifications of Resource Description Framework (RDF) and Web Ontology Language (OWL) do not include constructs for handling time-varying data and knowledge. For simplicity, RDF model is confined to binary predicates, hence some form of reification is needed to represent higher-arity predicates. To this date, there are many proposals extending RDF …

Implicit Relation-Based Question Answering To Answer Simple Questions Overdbpedia, Maryam Jamehshourani, Afsaneh Fatemi, Mohammadali Nematbakhsh

Turkish Journal of Electrical Engineering and Computer Sciences

RDF-based question answering systems give users the capability of natural language querying over RDF data. In order to respond to natural language questions, it is necessary that the main concept of the question be interpreted correctly, and then it is mapped to RDF data. A natural language question includes entities, classes, and implicit and explicit relationships. In this article, by focusing on identification and mapping of implicit relationships in the question (in addition to the explicit relationships), the mapping step has been improved. In the proposed solution (IRQA), entities and implicit/explicit relationships are identified by means of the provided rules …

Developing And Integration Of An Online Thesaurus: With Special Reference To Lgbtqia Related Terms, Sayani Mukherjee

Library Philosophy and Practice (e-journal)

No abstract provided.

Semantic Web Technologies, Dukagjin Hyseni

UBT International Conference

This study attempts to highlight the great importance of developing Semantic Web as one of the best discovery of better data management and presentation within the WWW. Since the W3C's was discovered, initially providing classic web content as web 1.0 that had link / hyperlink of document`s location, then web 2.0 as web-applications have more advanced technologies to connect data, and finally semantic web as extension of web 3.0 also known as Linked Data. The results show that in addition to the rapid development of the Semantic Web, the demand to use its features by data publishers and data readers …

Lower The Barrier & Be Empowered: Creating And Including Linked Data Vocabularies For Digital Collections, Sai Deng

Faculty Scholarship and Creative Works

Linked data has been explored and adopted by the library and archive community in recent years, but it has remained a relatively high bar to implement for most librarians and catalogers in their daily work. To lower the barrier, the librarians at the University of Central Florida (UCF) Libraries have adopted open source tools and platforms such as OpenRefine and Wikidata to their workflows to include linked data for their collections in the digital repositories as well as the library catalog. This presentation will review digital repositories' capabilities in accommodating linked data and show several cases of adding linked data …

Leveraging Schema Information For Improved Knowledge Graph Navigation, Rama Someswar Chittella

Browse all Theses and Dissertations

Over the years, the semantic web has emerged as a new generation of the world wide web featuring advanced technologies and research contributions. It has revolutionized the usage of information by allowing users to capture and publish machine-understandable data and expedite methods such as ontologies to perform the same. These ontologies help in the formal representation of a specified domain and foster comprehensive machine understanding. Although, the engineering of ontologies and usage of logic have been an integral part of the web semantics, new areas of research such as the semantic web search, linking and usage of open data on …

A Step Forward: Adding Linked Data Vocabularies To Digital Repositories, Sai Deng

Faculty Scholarship and Creative Works

Linked data has been a recent endeavor in the library community and various libraries have experimented with linked data in their traditional library catalog and digital collections. This presentation will review the different linked data practices especially focusing on those related to digital collections in academic libraries, explore the current digital library systems’ capabilities in accommodating linked data and present how linked data vocabularies have been added to the digital repositories at the University of Central Florida (UCF) Libraries. The UCF Libraries have been adding linked data vocabularies to its institutional repository from the Library of Congress’ authority files and …

Data Extraction From Web Tables: The Devil Is In The Details, George Nagy, Sharad C. Seth, Dongpu Jin, David W. Embley, Spencer Machado, Mukkai Krishnamoorthy

CSE Conference and Workshop Papers

We present a method based on header paths for efficient and complete extraction of labeled data from tables meant for humans. Although many table configurations yield to the proposed syntactic analysis, some require access to semantic knowledge. Clicking on one or two critical cells per table, through a simple interface, is sufficient to resolve most of these problem tables. Header paths, a purely syntactic representation of visual tables, can be transformed (“factored”) into existing representations of structured data such as category trees, relational tables, and RDF triples. From a random sample of 200 web tables from ten large statistical web …

A Distributed Graph Approach For Pre-Processing Linked Rdf Data Using Supercomputers, Michael J. Lewis, George K. Thiruvathukal, Venkatram Vishwanath, Michael J. Papka, Andrew Johnson

George K. Thiruvathukal

Efficient RDF, graph based queries are becoming more pertinent based on the increased interest in data analytics and its intersection with large, unstructured but connected data. Many commercial systems have adopted distributed RDF graph systems in order to handle increasing dataset sizes and complex queries. This paper introduces a distribute graph approach to pre-processing linked data. Instead of traversing the memory graph, our system indexes pre-processed join elements that are organized in a graph structure. We analyze the Dbpedia data-set (derived from the Wikipedia corpus) and compare our access method to the graph traversal access approach which we also devise. …

A Distributed Graph Approach For Pre-Processing Linked Rdf Data Using Supercomputers, Michael J. Lewis, George K. Thiruvathukal, Venkatram Vishwanath, Michael J. Papka, Andrew Johnson

Computer Science: Faculty Publications and Other Works

Efficient RDF, graph based queries are becoming more pertinent based on the increased interest in data analytics and its intersection with large, unstructured but connected data. Many commercial systems have adopted distributed RDF graph systems in order to handle increasing dataset sizes and complex queries. This paper introduces a distribute graph approach to pre-processing linked data. Instead of traversing the memory graph, our system indexes pre-processed join elements that are organized in a graph structure. We analyze the Dbpedia data-set (derived from the Wikipedia corpus) and compare our access method to the graph traversal access approach which we also devise. …

Semantics-Based Summarization Of Entities In Knowledge Graphs, Kalpa Gunaratna

Browse all Theses and Dissertations

The processing of structured and semi-structured content on the Web has been gaining attention with the rapid progress in the Linking Open Data project and the development of commercial knowledge graphs. Knowledge graphs capture domain-specific or encyclopedic knowledge in the form of a data layer and add rich and explicit semantics on top of the data layer to infer additional knowledge. The data layer of a knowledge graph represents entities and their descriptions. The semantic layer on top of the data layer is called the schema (ontology), where relationships of the entity descriptions, their classes, and the hierarchy of the …

Semantic Web Foundations For Representing, Reasoning, And Traversing Contextualized Knowledge Graphs, Vinh Thi Kim Nguyen

Browse all Theses and Dissertations

Semantic Web technologies such as RDF and OWL have become World Wide Web Consortium (W3C) standards for knowledge representation and reasoning. RDF triples about triples, or meta triples, form the basis for a contextualized knowledge graph. They represent the contextual information about individual triples such as the source, the occurring time or place, or the certainty. However, an efficient RDF representation for such meta-knowledge of triples remains a major limitation of the RDF data model. The existing reification approach allows such meta-knowledge of RDF triples to be expressed in RDF by using four triples per reified triple. While reification is …

Statistical Modeling And Simulation Of Variability And Reliability Of Cmos Technology, Khaled Hassan Md

Open Access Dissertations

The introduction of High-κ Metal Gate transistors led to higher integration density, low leakage current, and faster switching speed. However, this transition in technology roadmap brought about new failure mechanisms such as Positive Bias Temperature Instability and Stress Induced Leakage Current. In addition, the relentless downscaling of devices to keep up with Moore's law has significantly increased the time-zero variability caused by Random Dopant Fluctuation, Mean Gate Length Deviation, and Line Edge Roughness. Because of their possible correlation with time dependent aging effects, the quantification of reliability has become more complex than ever. To that effect, we propose a framework …

Schema-Aware Keyword Search On Linked Data, Ananya Dass

Dissertations

Keyword search is a popular technique for querying the ever growing repositories of RDF graph data on the Web. This is due to the fact that the users do not need to master complex query languages (e.g., SQL, SPARQL) and they do not need to know the underlying structure of the data on the Web to compose their queries. Keyword search is simple and flexible. However, it is at the same time ambiguous since a keyword query can be interpreted in different ways. This feature of keyword search poses at least two challenges: (a) identifying relevant results among a multitude …

Integrating Distributed Sources Of Information For Construction Cost Estimating Using Semantic Web And Semantic Web Service Technologies, Mehrdad Niknam, Saeed Karshenas

Civil and Environmental Engineering Faculty Research and Publications

A construction project requires collaboration of several organizations such as owner, designer, contractor, and material supplier organizations. These organizations need to exchange information to enhance their teamwork. Understanding the information received from other organizations requires specialized human resources. Construction cost estimating is one of the processes that requires information from several sources including a building information model (BIM) created by designers, estimating assembly and work item information maintained by contractors, and construction material cost data provided by material suppliers. Currently, it is not easy to integrate the information necessary for cost estimating over the Internet.

This paper discusses a new …

Enterprise Vocabulary Management; A Lexicographic View, Jan Voskuil

Wacana, Journal of the Humanities of Indonesia

The central theme in this paper is the problem of shifting from natural language descriptions, as in traditional dictionaries and thesauri, to working IT (Information Technology) systems that support people carrying out their administrative tasks. An explicit description of the specific language used in an organization is necessary to guarantee properly working IT systems and a healthy flow of information. Traditionally, there are different ways of capturing such a vocabulary. Different options are considered, arguing that the general form of a thesaurus offers the optimal solution for a broad range of cases. Various requirements for such a thesaurus are examined. …

Faces: Diversity-Aware Entity Summarization Using Incremental Hierarchical Conceptual Clustering, Kalpa Gunaratna, Krishnaprasad Thirunarayan, Amit P. Sheth

Kno.e.sis Publications

Semantic Web documents that encode facts about entities on the Web have been growing rapidly in size and evolving over time. Creating summaries on lengthy Semantic Web documents for quick identification of the corresponding entity has been of great contemporary interest. In this paper, we explore automatic summarization techniques that characterize and enable identification of an entity and create summaries that are human friendly. Specifically, we highlight the importance of diversified (faceted) summaries by combining three dimensions: diversity, uniqueness, and popularity. Our novel diversity-aware entity summarization approach mimics human conceptual clustering techniques to group facts, and picks representative facts from …

Re-Platforming Digital Collections For Enhanced Access & Search Functionality, Virginia A. Dressler

Virginia A Dressler

Currently, Kent State University Library is preparing to redesign its online exhibits and digital collections onto a new content management system and interface. The plan will entail migrating existing digital collections to a new platform, and in so, provide a more inclusive search mechanism to enhance access. In order to prepare for this migration, we are currently mapping the existing digital collections into a new metadata schema for the proposed solution, from a locally created and hosted framework into a more sustainable platform with a consolidated, searchable base for all digital objects and corresponding metadata. This work includes taking a …

"In The Early Days Of A Better Nation": Enhancing The Power Of Metadata Today With Linked Data Principles#11;, John Mark Ockerbloom

John Mark Ockerbloom

We need not wait for the wholesale redesign of metadata and workflows to semantic web and linked data technologies in order to begin taking advantage of their design principles. This talk will show how metadata organized and presented in ways that encourage sharing, widespread reuse, and broad collaboration organized around community "hubs" can significantly improve resource discovery as well as other library services and information needs. Examples will be shown from systems designed around linked data standards and technologies and systems not so designed. While standard linked data formats and interfaces can aid in metadata reuse and maintenance, more general …

Modeling Object Relationships In Fedora Commons Using Rdf, Graham Hukill

Library Scholarly Publications

Modeling digital object relationships with RDF statements is perhaps the single most important thing we do in creating our digital collections infrastructure. This presentation provides a brief overview of RDF, "triples", how they are utilized in Fedora Commons for modeling relationships between objects, and some future goals.

Gearing Up For Fedora 4, Virginia A. Dressler, Joe Corall

Virginia A Dressler

At Kent State University Libraries, we are gearing up for a migration to Fedora 4 with our existing digital collections. Using the D2RQ platform, we are transforming the extended Dublin Core elements of the current collections and creating a mapping file. Currently each collection has a separate SQL database, and the migration will enable a higher level of connectivity.

Applying Concepts Of Linked Data To Local Digital Collections To Enhance Access And Searchability, Virginia A. Dressler

Virginia A Dressler

Plans are currently underway at the Kent State University Library to migrate digital objects onto a different content management system to address the needs of growing collections. The plan will involve shifting to a framework to enhance all current digital collections, as well as anticipating the growth of future projects and formats. The poster will touch in particular on the topic of enhancing search capabilities in this new framework, through use of a single, cross collection searchable index and also discuss the benefits of applying Linked Data concepts. Two current digital collections that will be highlighted and discussed in the …

Vocab4me: A Tool That Provides Vocabulary Recommendations For Publishing Linked Data, Srikar Nadipally

Theses and Dissertations

The web before linked data was a database of html documents. These documents were meant for human consumption and it was hard for machines to make sense of data in html documents. The linked data was introduced with the aim of making the web a global database of data that is machine processable. Linked Data describes a method of publishing structured data so that it can be interlinked and become more useful. Realizing the promise of linked data a lot of people started publishing linked data. But the process of publishing the huge amount of existing data is cumbersome and …

Rdfa And Microdata, Bethany Wetherill

Library Philosophy and Practice (e-journal)

This project seeks to explore and observe differences in RDFa and microdata and their ability to retain proper schematization and syntax when converted back to RDF/XML. Online conversion tools were used to transpose existing RDF/XML files from online data dumps to RDFa and microdata, and then back to RDF/XML, offering some insights into RDFa and microdata’s capabilities, as well as a taste of what may happen in the future if major search engines decide to move away from microdata and developers need to convert to a different semantic markup language. Multiple online converters were employed in the conversion process in …

Contaminant Hydrogeology Knowledge Base (Chkb) Of Georgia, Usa, Semir Sarajlic

Geosciences Theses

Hydrogeologists collect data through studies that originate from a diverse and growing set of instruments that measure, for example, geochemical constituents of surface and groundwater. Databases store and publish the collected data on the Web, and the volume of data is quickly increasing, which makes accessing data problematic and time consuming for individuals. One way to overcome this problem is to develop ontology to formally and explicitly represent the domain (e.g., contaminant hydrogeology) knowledge. Using OWL and RDF, contaminant hydrogeology ontology (CHO) is developed to manage hydrological spatial data for Georgia, USA. CHO is a conceptual computer model for the …