This paper describes an exploratory study peqormed to compare three different interface styles for ad hoc query to a database. Subjects with wide ranging computer experience performed queries of varying dificulty using either an artificial, a graphical, or a natural language interface. All three interfaces were commercial products. The study revealed strengths and weaknesses of each interface a...

OF THE DISSERTATION Decomposition Techniques for Learning Graphical Models

of the Dissertation Sensitivity Analysis of Probabilistic Graphical Models

We consider the problem of learning the structure of a pairwise graphical model over continuous and discrete variables. We present a new pairwise model for graphical models with both continuous and discrete variables that is amenable to structure learning. In previous work, authors have considered structure learning of Gaussian graphical models and structure learning of discrete models. Our app...

We investigate the use of graphical models in two fundamental problems of group coordination: (1) reaching a consensus on beliefs, and (2) allocating risk. On the negative side, we prove that under mild assumptions, even if every member of a group agrees on a graphical topology, no method of combining their beliefs can maintain that structure. Even weaker conditions rule out local aggregation w...

Efficient tracking of class performance across topics is an important aspect of classroom teaching; this is especially true for psychometric general intelligence exams, which test a varied range of abilities. We develop a framework that uncovers a hidden thematic structure underlying student responses to a large pool of questions, using a probabilistic graphical model.

The evaluation of Graphical User Interface has significant role to improve its quality. Very few metrics exists for the evaluation of Graphical User Interface. The purpose of metrics is to obtain better measurements in terms of risk management, reliability forecast, project scheduling, and cost repression. In this paper structural complexity metrics is proposed for the evaluation of Graphical U...

OF THE DISSERTATION Graphical Models for Wide-Area Activity Analysis in Continuous Videos

This paper describes the modeling of distance relay using Matlab/Simulink package. SimPowerSystem toolbox was used for detailed modeling of distance relay, transmission line and fault simulation. Inside the modeling, single line to ground (SLG) fault was choose to be the fault type and Mho type distance characteristic was choose to be as the protection scheme. A graphical user interface (GUI) w...