Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 193 for “"Databases and Information Systems"”.
-
GeoExpert - An Expert System Based Framework for Data Quality in Spatial Databases
… discovery process became a common trend, and in order to obtain better results from this knowledge discovery process the data should be of high quality. In this thesis we proposed a framework 'GeoExpert' for data quality assessment and cleansing tool for spatial data that integrates the …
-
Determining vulnerability using attach graphs: an expansion of the current FAIR model
<p>Factor Analysis of Information Risk (FAIR) provides a framework for measuring and understanding factors that contribute to information risk. One such factor is FAIR Vulnerability; the probability that an event involving a threat will result in a loss. An asset is vulnerable if a threat actor’s …
-
Masquerade detection using fortified naive Bayes
… the presence of a masquerader have been proposed and researched, but there are significant problems including low detection rates and high false positive results. Roy Maxion and Kevin Killourhy utilized a Naive Bayes classifier for detection using enriched Unix command lines, which are command …
-
NEUROEVOLUTION AND AN APPLICATION OF AN AGENT BASED MODEL FOR FINANCIAL MARKET
… We simulate trader agents on real market data and attempt to optimize their actions. Agent decisions are based on Echo State Networks. The agents take various market indicators as inputs and produce an action such as: buy or sell. We optimize the parameters of the echo state networks using …
-
A New Credit Scoring Model to Reduce Potential Predatory Lending: A Design Science Approach
… to address issues related to predatory lending and the financial exclusion affecting individuals often categorized as 'credit invisible,' 'credit unscorable,' 'unbanked,' and 'underbanked.' These individuals typically face difficulties in establishing or repairing a credit history, which poses a …
-
Identifying an Optimal Dining Plan System for the Entertainment Industry
… World (WDW). Under the current system, the information provided to guests explaining the program is unclear which leads to confusion for guests. For example, guests are not sure what food they can purchase using the DDP or at which dining locations they can use the DDP. Given these problems, …
-
Navigation agents and traffic simulation
… structures, the specification of various agents, and their performance. It also includes descriptions of three different types of agents and the analysis of their performance. One agent has full knowledge of the environment and takes the most efficient path in terms of total path distance. This is …
-
Recommender System for Audio Recordings
… – named weighted-average, K-nearest neighbors, and item-based – which are based on collaborative filtering techniques, which work by recording user preferences on items and by anticipating the future likes and dislikes of users by comparing the records, for prediction of user preference. To …
-
DEFY: A Deniable File System for Flash Memory
… to those files, as they most likely contain information the user wishes to keep secret, and coercion can be a very strong motivator for the owner of an encrypted file system to surrender their secret key.</p> <p>Herein we present DEFY, a deniable file system designed to work exclusively with …
-
Participatory learning environment : requirements and design analysis
… of this thesis is to develop the requirements and model preliminary database and class designs for the Participatory Learning Approach Environment (PLAE). The requirements and the designs will be presented for version 1.0 and 2.0 with version 2.0 supporting an enhanced requirements set. …
-
An examination of coordination among friends and strangers from a coordination theory perspective
… complex collaboration between individuals and groups. Outeraction is primarily conducted through the interpersonal communication channels of texting, instant messaging (IM), face-to-face, and mobile phone or Skype conversations. Currently this area of research in mobile outeraction support …
-
The application of cloud resources to terrain data visualization
… collection of Amazon EC-2 machines for fetching and decoding of terrain data, in conjunction with modern graphics libraries, three dimensional terrain information may be viewed and interacted with by many remote clients within the browser. Data pre-fetching and a parallel producer-consumer model …
-
Construction of efficient indexes from Fuzzy Clusters: preliminary study
… to queries submitted to database management systems (DBMS). This real-time response is realized by being able to efficiently identify locations of data stored in a database given the value of an attribute. Such efficiency is determined in terms of asymptotic computational complexity of …
-
Intrusion detection, intelligent agents, and soft computing
<p>Demand for intrusion detection systems (IDSs) has increased significantly due to the exponential increase of malignant activities and the shortage of trained network administrators. It is mandatory that an IDS aid network administrators in responding quickly to security threats in order to …
-
An Analysis of Generational Caching Implemented in a Production Website
… an issue since the inception of the web. The demand for user generated content and personalized web pages requires the use of a database for a storage engine. Unfortunately, scaling the database to handle large amounts of traffic is still a problem many companies face. One such company is iFixit, …
-
A study of the approaches and attitudes of information systems executives to measuring information systems effectiveness
… the attitudes of IS executives to the current and future importance of some of the approaches to measuring IS efficiency and IS effectiveness in large Australian organisations. The study identified the nature of IS effectiveness approaches along the lines of whether they are business-oriented, …
-
Federating Heterogeneous Digital Libraries by Metadata Harvesting
<p>This dissertation studies the challenges and issues faced in federating heterogeneous digital libraries (DLs) by metadata harvesting. The objective of federation is to provide high-level services (e.g. transparent search across all DLs) on the collective metadata from different digital …
Page 1 of 10