Digital Commons Network^™

Authenticating Multi-Dimensional Query Results In Data Publishing, Weiwei Cheng, Hwee Hwa Pang, Kian-Lee Tan

Research Collection School Of Computing and Information Systems

In data publishing, the owner delegates the role of satisfying user queries to a third-party publisher. As the publisher may be untrusted or susceptible to attacks, it could produce incorrect query results. This paper introduces a mechanism for users to verify that their query answers on a multi-dimensional dataset are correct, in the sense of being complete (i.e., no qualifying data points are omitted) and authentic (i.e., all the result values originated from the owner). Our approach is to add authentication information into a spatial data structure, by constructing certified chains on the points within each partition, as well as …

Crossing The Chasm: The Xid Technologies Story, Arcot Desai Narasimhalu, Roberto Mariani

Research Collection School Of Computing and Information Systems

XID Technologies is a face processing start up company built initially around a disruptive face recognition technology. The technology innovation came from Kent Ridge Digital Labs, a publicly funded software research laboratory in Singapore. Face recognition is the least intrusive and harmless among the various biometric solutions available in the market. The basic approach to human face recognition is to identify a robust feature set that was unique enough to differentiate amongst the many millions of human faces that the system was required to verify. The technology innovation used by XID framed the problem differently and thereby overcame the challenges …

Ontosearch: A Full-Text Search Engine For The Semantic Web, Xing Jiang, Ah-Hwee Tan

Research Collection School Of Computing and Information Systems

OntoSearch, a full-text search engine that exploits ontological knowledge for document retrieval, is presented in this paper. Different from other ontology based search engines, OntoSearch does not require a user to specify the associated concepts of his/her queries. Domain ontology in OntoSearch is in the form of a semantic network. Given a keyword based query, OntoSearch infers the related concepts through a spreading activation process in the domain ontology. To provide personalized information access, we further develop algorithms to learn and exploit user ontology model based on a customized view of the domain ontology. The proposed system has been applied …

Mobile Healthcare Informatics, Keng Siau, Zixing Shen

Research Collection School Of Computing and Information Systems

Advances in wireless technology give pace to the rapid development of mobile applications. The coming mobile revolution will bring dramatic and fundamental changes to our daily life. It will influence the way we live, the way we do things, and the way we take care of our health. For the healthcare industry, mobile applications provide a new frontier in offering better care and services to patients, and a more flexible and mobile way of communicating with suppliers and patients. Mobile applications will provide important real time data for patients, physicians, insurers, and suppliers. In addition, it will revolutionalize the way …

A Novel Privacy Preserving Authentication And Access Control Scheme For Pervasive Computing Environments, K. Ren, Wenjing Lou, K. Kim, Robert H. Deng

Research Collection School Of Computing and Information Systems

Privacy and security are two important but seemingly contradictory objectives in a pervasive computing environment (PCE). On one hand, service providers want to authenticate legitimate users and make sure they are accessing their authorized services in a legal way. On the other hand, users want to maintain the necessary privacy without being tracked down for wherever they are and whatever they are doing. In this paper, a novel privacy preserving authentication and access control scheme to secure the interactions between mobile users and services in PCEs is proposed. The proposed scheme seamlessly integrates two underlying cryptographic primitives, namely blind signature …

Front Matter

Journal of Digital Forensics, Security and Law

No abstract provided.

Back Matter

Journal of Digital Forensics, Security and Law

No abstract provided.

Geotorrent: Optimizing Gis Web Services For Interactive Educational Use, Jeffrey A. Bergamini, Michael Haungs

Computer Science and Software Engineering

Large online geospatial datasets for use with GIS are increasingly available and have many uses, including study in numerous academic and scientific fields. Access to this data in real time for pedagogical purposes would be immensely useful to educators. The academic lab environment presents unique requirements for data access: Its exploratory, multiplicative, and connective nature provides challenges and opportunities that have gone unexplored. Currently, these challenges make interactive educational use impractical. Also, student training requirements have been a noted problem. We present “GeoTorrent”, a system that enables such use for K-20 educational institutions. GeoTorrent provides a client-side proxy server that …

Corporate Policy Management For A Financial Organization, Mavourneen W. Ballard

Regis University Student Publications (comprehensive collection)

A large financial organization has intent of deploying a framework to support Corporate and Business Policies and Procedures. Internally, the policies and procedures lack the standardization and consistency necessary to publish policies across a large diverse organization. Additionally, the organization needs to ensure quality in the protocols and templates, products and practices as well as provide a framework to automate the support of policy and procedure administrative aspects related to content management, document retention and destruction and increased search efficiencies. Additional challenges exist external to the organization in the form of Office of the Comptroller of the Currency (OCC) requirements …

A Short Tutorial On Reconstructability Analysis, Martin Zwick

Complex Systems Faculty Publications and Presentations

This talk will present the basic ideas of Reconstructability Analysis. RA is a general modeling methodology developed in the systems community since the early 60s (pioneered by Ross Ashby) for exploratory (data mining, machine learning) and confirmatory modeling. RA is based in graph theory, set theory, information theory, and statistics. It is applicable to qualitative (nominal) and, via binning, to quantitative (continuous) data, with both statistical & non-statistical applications. It overlaps and augments more widely known methods, e.g., log-linear modeling and Bayesian networks.

Keywords: Reconstructability Analysis, Log-Linear Modeling, categorical data, multivariate statistics, exploratory modeling, confirmatory modeling

Ontology-Based Free-Form Query Processing For The Semantic Web, Mark S. Vickers

Theses and Dissertations

With the onset of the semantic web, the problem of making semantic content effectively searchable for the general public emerges. Demanding an understanding of ontologies or familiarity with a new query language would likely frustrate semantic web users and prevent widespread success. Given this need, this thesis describes AskOntos, which is a system that uses extraction ontologies to convert conjunctive, free-form queries into structured queries for semantically annotated web pages. AskOntos then executes these structured queries and provides answers as tables of extracted values. In experiments conducted AskOntos was able to translate queries with a precision of 88% and a …

Secure Configuration Tool Suite Initiative, Victor M. Lugo Jr.

Regis University Student Publications (comprehensive collection)

Vulnerability identification, remediation, and compliance verification within the Department of Defense (DOD) are currently inconsistent and non-integrated. The Secure Configuration Tool Suite (SCTS) solution should make significant grounds in resolving the DOD deficiency within an Enterprise-wide Information Assurance Vulnerability Management System. The professional project documented in this paper is a result of a major DOD initiative in support of the SCTS, and is comprised of 2 initiatives: the Secure Configuration Compliance Validation Initiative (SCCVI), which provides vulnerability assessment capability, and the Secure Configuration Remediation Initiative (SCRI), which provides vulnerability remediation capability. As a member of the project installation team the …

Development Of A Content Management System (Cms) For A Small Polling Organization, Natalia Blokhina

Regis University Student Publications (comprehensive collection)

This paper will address the problem of storing web page content anddocuments in a static form and howthat complicates business processes in a polling organizationthat publishes frequent reports and documents on its website. This paper will also describe how a Content Management System (CMS) can successfully resolve the problems associated with static content. The process of implementing the CMS with PHP and MySQL will also be described and illustrated. Furthermore, this paper will address the common issues that come up in project development and web development such as dealing with expanding scope, planning for change and taking advantage of the …

Using An Object-Oriented Approach To Develop A Software Application, Paul Duvall

Regis University Student Publications (comprehensive collection)

This paper describes a software development project completed using an object-oriented approach. Because Visual Basic .NET was used to build the Windows-based application, application design patterns were identified that would be beneficial in this development environment. A discussion of which design patterns were selected and how they were implemented using Visual Basic .NET is included, along with descriptions of object-oriented design documents and their role in the project. The paper also provides details about how the project has and will be used to provide teaching examples in software development courses.

An Access Control Middleware Application, Gary W. Withrow

Regis University Student Publications (comprehensive collection)

Information in any modern organization is a very important topic. A company's information is arguably the single most important asset a company owns. Loss or compromise of the corporate information assets can lead to serious financial impact on a company's bottom line. Currently most corporate information is stored on network storage devices. These storage devices provide quick and easy access to the information from anywhere in the world. These same storage devices can also expose the information to its greatest vulnerability, attack by a hostile entity. The current network security best practice calls for a strategy named 'Defense in Depth' …

Autonomous Fish Tracking By Rov Using Monocular Camera, Jun Zhou, Christopher M. Clark

Computer Science and Software Engineering

This paper concerns the autonomous tracking of fish using a Remotely Operated Vehicle (ROV) equipped with a single camera. An efficient image processing algorithm is presented that enables pose estimation of a particular species of fish - a Large Mouth Bass. The algorithm uses a series of filters including the Gabor filter for texture, projection segmentation, and geometrical shape feature extraction to find the fishes distinctive dark lines that mark the body and tail. Feature based scaling then produces the position and orientation of the fish relative to the ROV. By implementing this algorithm on each frame of a series …

Sampled: Shared Anonymous Music Playback Using Wireless Devices, Constantinos Neophytou

Computer Science Technical Reports

Recent advances in mobile computing enable many new applications, yet at the same time create privacy implications caused by the increasing amount of data that becomes available. This thesis will explore the possibilities of wireless-enabled portable devices and their attending privacy implications. We will describe how such a device containing personal information about the musical preferences of its user can help improve the user's experience in a social setting where music is played for all, and at the same time preserve each user's privacy.

Bi-Level Clustering Of Mixed Categorical And Numerical Biomedical Data, Bill Andreopoulos, Aijun An, Xiaogang Wang

Faculty Publications, Computer Science

Biomedical data sets often have mixed categorical and numerical types, where the former represent semantic information on the objects and the latter represent experimental results. We present the BILCOM algorithm for |Bi-Level Clustering of Mixed categorical and numerical data types|. BILCOM performs a pseudo-Bayesian process, where the prior is categorical clustering. BILCOM partitions biomedical data sets of mixed types, such as hepatitis, thyroid disease and yeast gene expression data with Gene Ontology annotations, more accurately than if using one type alone.

Structured Queries For Semistructured Probabilistic Data, Alex Dekhtyar, Krol Kevin Mathias, Praveen Gutti

Computer Science and Software Engineering

We present SPOQL, a structured query language for Semistructured Probabilistic Object (SPO) model [4]. The original querylanguage—SP-Algebra [4], has traditional limitations like terse functional notation and unfamiliarity to application programmers. SPOQL alleviates these problems by providing familiar SQL-like declarative syntax. We show that parsing SPOQL queries is a more involving task than parsing SQL queries. We also present an eagerevaluation algorithm for SPOQL queries

Multihierarchical Xquery For Document-Centric Xml, Ionut E. Iacob, Alex Dekhtyar

Computer Science and Software Engineering

Text has a non-hierarchical structure. Not surprisingly, searching for information in the content of a document often yields results that overlap the structure within the document. It is often of a great interest to relate such results to the embedded document structure. In this work we present an extension of the XQuery language over multihierarchical document-centric XML documents. We illustrate the benefits of using multihierarchical XQuery for text-and-structure searches in document-centric XML documents More specifically, multihierarchical XQuery allows representing relationships between textsearch results and document structure even for cases wheresuch search results overlap markup boundaries and even incases when only …

Xml Views For Electronic Editions, Ionut E. Iacob, Alex Dekhtyar

Computer Science and Software Engineering

In this paper we discuss the implementation of user-defined views over multihierarchical document-centric XML documents.

Masquerader Detection Using Oclep: One-Class Classification Using Length Statistics Of Emerging Patterns, Lijun Chen, Guozhu Dong

Kno.e.sis Publications

We introduce a new method for masquerader detection that only uses a user’s own data for training, called Oneclass Classification using Length statistics of Emerging Patterns (OCLEP). Emerging patterns (EPs) are patterns whose support increases from one dataset/class to another with a big ratio, and have been very useful in earlier studies. OCLEP classifies a case T as self or masquerader by using the average length of EPs obtained by contrasting T against sets of samples of a user’s normal data. It is based on the observation that one needs long EPs to differentiate instances from a common class, but …

Online Survey System: A Web-Based Tool For Creating And Administering Student Evaluations Online, Fatima Marie Idowu

Theses and Dissertations

With the advancement in technology over the years, the administering of online surveys has expanded. In particular, universities are using the online medium to administer surveys to students, in order to evaluate faculty performances. The move of surveys to the online realm has meant a reduction in cost, time and efforts, of survey administrators, and the increase in use of technology within universities. With the use of online surveys the challenges of confidentiality, anonymity and response rates are as prominent as they are with paper-based surveys.

This study researched the use of online surveys in education; detailing systems currently used …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 22, Number 8, June 2006, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

An eight page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Interacting With Web Hierarchies, Saverio Perugini, Naren Ramakrishnan

Computer Science Faculty Publications

Web site interfaces are a particularly good fit for hierarchies in the broadest sense of that idea, i.e. a classification with multiple attributes, not necessarily a tree structure. Several adaptive interface designs are emerging that support flexible navigation orders, exposing and exploring dependencies, and procedural information-seeking tasks. This paper provides a context and vocabulary for thinking about hierarchical Web sites and their design. The paper identifies three features that interface to information hierarchies. These are flexible navigation orders, the ability to expose and explore dependencies, and support for procedural tasks. A few examples of these features are also provided

A Metamodel And Uml Profile For Rule-Extended Owl Dl Ontologies, Saartje Brockmans, Peter Haase, Pascal Hitzler, Rudi Studer

Computer Science and Engineering Faculty Publications

In this paper we present a MOF compliant metamodel and UML profile for the Semantic Web Rule Language (SWRL) that integrates with our previous work on a metamodel and UML profile for OWL DL. Based on this metamodel and profile, UML tools can be used for visual modeling of rule-extended ontologies.

Robot Localization Using Visual Image Mapping, Carrie D. Crews

Theses and Dissertations

One critical step in providing the Air Force the capability to explore unknown environments is for an autonomous agent to be able to determine its location. The calculation of the robot's pose is an optimization problem making use of the robot's internal navigation sensors and data fusion of range sensor readings to find the most likely pose. This data fusion process requires the simultaneous generation of a map which the autonomous vehicle can then use to avoid obstacles, communicate with other agents in the same environment, and locate targets. Our solution entails mounting a Class 1 laser to an ERS-7 …

Mitigating Insider Threat Using Human Behavior Influence Models, Anthony J. Puleo

Theses and Dissertations

Insider threat is rapidly becoming the largest information security problem that organizations face. With large numbers of personnel having access to internal systems, it is becoming increasingly difficult to protect organizations from malicious insiders. The typical methods of mitigating insider threat are simply not working, primarily because this threat is a people problem, and most mitigation strategies are geared towards profiling and anomaly detection, which are problematic at best. As a result, a new type of model is proposed in this thesis, one that incorporates risk management with human behavioral science. The new risk-based model focuses on observable influences that …

Afit Uav Swarm Mission Planning And Simulation System, James N. Slear

Theses and Dissertations

The purpose of this research is to design and implement a comprehensive mission planning system for swarms of autonomous aerial vehicles. The system integrates several problem domains including path planning, vehicle routing, and swarm behavior. The developed system consists of a parallel, multi-objective evolutionary algorithm-based path planner, a genetic algorithm-based vehicle router, and a parallel UAV swarm simulator. Each of the system's three primary components are developed on AFIT's Beowulf parallel computer clusters. Novel aspects of this research include: integrating terrain following technology into a swarm model as a means of detection avoidance, combining practical problems of path planning and …

Development Of A Malicious Insider Composite Vulnerability Assessment Methodology, William H. King

Theses and Dissertations

Trusted employees pose a major threat to information systems. Despite advances in prevention, detection, and response techniques, the number of malicious insider incidents and their associated costs have yet to decline. There are very few vulnerability and impact models capable of providing information owners with the ability to comprehensively assess the effectiveness an organization's malicious insider mitigation strategies. This research uses a multi-dimensional approach: content analysis, attack tree framework, and an intent driven taxonomy model are used to develop a malicious insider Decision Support System (DSS) tool. The DSS tool's utility and applicability is demonstrated using a notional example. This …