Gautam Biswas

A Review of Diagnostic Techniques for ISHM Applications (2008)

A framework for knowledge-based scienti c discovery in geological databases has been developed. The discovery process consists of two main steps: context de nition and equation derivation. Context de...

Ann Patterson-hine, Gordon Aaseng, Gautam Biswas, Sriram Narasimhan, Krishna Pattipati

System diagnosis is an integral part of any Integrated System Health Management application. Diagnostic applications make use of system information from the design phase, such as safety and mission...

Effect of Metacognitive Support on Student Behaviors in Learning by Teaching Environments (2008)

Jason Tan, John Wagster, Yanna Wu, Gautam Biswas

Abstract. We have developed environments that use teaching as a metacognitive,

Interaction of inviscid vortices having orthogonal orientations (2008)

Shaligram Tiwari, Gautam Biswas, Mihir Sen

The present investigation has been carried out from Lagrangian perspective to study the flow field arising due to two and three inviscid and fixed vortex filaments with their axes mutually...

Designing Distributed Diagnosers for Complex Continuous Systems (2008)

Indranil Roychoudhury, Student Member, Gautam Biswas, Senior Member, Xenofon Koutsoukos, Senior Member

Abstract—Wear and tear from sustained operations cause systems to degrade and develop faults. Online fault diagnosis schemes are necessary to ensure safe operation and avoid catastrophic...

A Qualitative Approach to Multiple Fault Isolation in Continuous Systems (2008)

AdventurePlayer: Macrocontext Plus Microworlds (2008)

The multiple fault diagnosis problem is important, since the single fault assumption can lead to incorrect or failed diagnoses when multiple faults occur. It is challenging for continuous systems,...

Thad Crews, Gautam Biswas, John Bransford, Susan Goldman

The Cognition and Technology Group at Vanderbilt (CTGV) is developing the Jasper Woodbury Problem Solving Series, a videodisc based program designed to motivate students and help them learn to think...

A Review of Diagnostic Techniques for ISHM Applications (2008)

Ann Patterson-hine, Gordon Aaseng, Gautam Biswas, Sriram Narasimhan, Krishna Pattipati

System diagnosis is an integral part of any Integrated System Health Management application. Diagnostic applications make use of system information from the design phase, such as safety and mission...

Integrating Task Allocation, Planning, Scheduling, and Adaptive Resource Management to Support Autonomy in a Global Sensor Web (2008)

John S. Kinnebrew, Gautam Biswas, Nishanth Shankaran, Douglas C. Schmidt, Dipa Suri

NASA’s Earth Science Vision calls for a global sensor web comprised of heterogeneous platforms with on-board information processing, capable of orchestrating real-time collaborative operations with...

Nashville, TN, USA (2008)

Gautam Biswas, Xenofon Koutsoukos, Sherif Abdelwahed, Gautam Biswas, Xenofon Koutsoukos, Sherif Abdelwahed

the Artificial Intelligence community. Its focus is on theories, principles and computational techniques for diagnosis, monitoring, testing, reconfiguration and repair of complex systems, and...

Pedagogical Agents for Learning by Teaching: Teachable Agents (2008)

Kristen Blair, Daniel L. Schwartz, Gautam Biswas, Krittaya Leelawong

We describe pedagogical agents called Teachable Agents (TAs) where students learn by teaching the computer. We describe an example of a TA, and discuss the features that allow students to capitalize...

On Discrete Event Diagnosis Methods for Continuous Systems (2008)

Gautam Biswas, Daniel Schwartz, Krittaya Leelawong, Nancy Vye

Abstract — Fault detection and isolation is a key component of any safety-critical system. Although diagnosis methods based on discrete event systems have been recognized as a promising framework,...

Teachable Agents (2008)

Teachable Agents This paper discusses Betty’s Brain, a teachable agent in the domain of river ecosystems that combines learning by teaching with self-regulation mentoring to promote deep learning...

Component-oriented modeling of hybrid dynamic systems using the Generic Modeling Environment (2008)

Eric-j. M, Gautam Biswas, Nagabhushan Mahadevan, Gabor Karsai

This paper presents a component oriented modeling environment for building hybrid dynamic models of physical system. The modeling environment is created using the Generic Modeling Environment (GME),...

Toward Effective Multi-capacity Resource Allocation in Distributed Real-time and Embedded Systems (2008)

Nilabja Roy, John S. Kinnebrew, Nishanth Shankaran, Gautam Biswas, Douglas C. Schmidt

Standards-based quality of service (QoS)-enabled component middleware is increasingly being used as a platform for developing distributed real-time embedded (DRE) systems because it provides features...

2004-01-2441 Online Hierarchical Fault-Adaptive Control for Advanced Life Support Systems (2008)

Sherif Abdelwahed, Jian Wu, Gautam Biswas, John W. Ramirez

Fault Diagnosis of Continuous Systems Using Discrete-Event Methods (2008)

INTEGRATED DIAGNOSIS AND CONTROL FOR HYBRID DYNAMIC SYSTEMS (2008)

Abstract — Fault diagnosis is crucial for ensuring the safe operation of complex engineering systems. Although discreteevent diagnosis methods are used extensively, they do not easily apply to...

Gabor Karsai, Sherif Abdelwahed, Gautam Biswas

In this paper we present an approach for combined fault diagnosis and reconfigurable control structure for a general class of hybrid systems. In this approach a plant is modeled using an extended...

Evaluation, Selection, and Application of Model-Based Diagnosis Tools and Approaches (2008)

Scott Poll, Ann Patterson-hine, Joe Camisa, David Nishikawa, Lilly Spirkovska, Ole J. Mengshoel, ...

Model-based approaches have proven fruitful in the design and implementation of intelligent systems that provide automated diagnostic functions. A wide variety of models are used in these approaches...

An Improved Algorithm for Hybrid Diagnosis of Complex Systems (2008)

Sarita Gupta, Gautam Biswas, John W. Ramirez

Abstract. Model-based diagnosis schemes for hybrid systems are inherently complex because they deal with models that exhibit continuous and discrete dynamics. Our approach to hybrid system diagnosis...

Discrete Abstraction and Supervisory Control of Switching Systems (2008)

Rong Su, Sherif Abdelwahed, Gabor Karsai, Gautam Biswas

In this paper we propose a method to create discrete abstraction of state space behavior for continuous-time systems based on gradient analysis of the system dynamics. Then we describe how to use...

Toward Distributed Diagnosis of Complex Physical (2008)

Systems Gautam Biswas, Gautam Biswas, Sherif Abdelwahed, Xenofon Koutsoukos, Jyoti Gandhe, Eric Manders

The size and complexity of present day systems motivates the need for developing distributed fault diagnosis algorithms. This paper uses the Transcend approach to fault diagnosis to develop a...

Case Studies in Learning by Teaching Behavioral Differences in Directed versus Guided Learning (2008)

Gautam Biswas, Krittaya Leelawong, Kadira Belynne, Bilikiss Adebiyi

Our studies with Betty's Brain, a learning by teaching environment, have shown that the system is effective in helping fifth grade students gain a good understanding of river ecosystem concepts....

Pedagogical Agents for Learning by Teaching: Teachable Agents (2008)

Kristen Blair Daniel, Kristen Blair, Daniel L. Schwartz, Gautam Biswas, Krittaya Leelawong

this article, we spotlight our agent named Betty. Students teach Betty by creating a network of entities and their relations, much like a concept map. Figure 1 provides an example. Students use a...

Intelligent Resource Management and Dynamic Adaptation in a Distributed Real-time and Embedded Sensor Web System (2008)

John S. Kinnebrew, William R. Otte, Nishanth Shankaran, Gautam Biswas, Douglas C. Schmidt

Abstract—Sensor webs are often composed of servers connected to distributed real-time embedded (DRE) systems that operate in open environments where operating conditions, workload, resource...

Model Semantics and Simulation for Hybrid Systems Operating in Sliding Regimes (2007)

Pieter J. Mosterman, Feng Zhao, Gautam Biswas

We describe a model semantics and a simulation algorithm for characterizing a class of dynamic physical systems operating in the so-called sliding regimes. Many continuous physical systems operate at...

Problem-Based Learning: An Innovative Approach to Audiology Education (2007)

Anne Marie Tharpe, Judith A. Rassi, Gautam Biswas

This article presents an initial framework for a novel educational methodology in this virtually unexplored area.

Advanced diagnostics and prognostics testbed (2007)

Scott Poll, Ann Patterson-hine, Joe Camisa, David Garcia, David Hall, Charles Lee, ...

Researchers in the diagnosis community have developed a number of promising techniques for system health management. However, realistic empirical evaluation and comparison of these approaches is...

A discrete event approach to diagnosis of continuous systems (2007)

A Method for Efficient Simulation of Hybrid Bond Graphs (2007)

Fault detection and isolation is a key component of any safety-critical system. Although diagnosis methods based on discrete event systems have been recognized as a promising framework, they cannot...

Indranil Roychoudhury, Matthew Daigle, Pieter J. Mosterman, Gautam Biswas, Xenofon Koutsoukos

block diagrams, incremental causality reassignment The hybrid bond graph (HBG) paradigm is a uniform, multi-domain physics-based modeling language. It incorporates controlled and autonomous mode...

Distributed diagnosis in formations of mobile robots (2007)

Matthew J. Daigle, Xenofon D. Koutsoukos, Gautam Biswas, Senior Member

Abstract—Multirobot systems are being increasingly used for a variety of tasks in manufacturing, surveillance, and space exploration. These systems can degrade or develop faults during operation,...

Assessing Design Activity in Complex CMOS Circuit Design (2006)

Biswas, Gautam, Goldman, Susan R., Fisher, Doug, Bhuva, Bharat, Glewwe, Grant

This chapter characterizes human problem solving in digital circuit design. We analyze protocols of designers with varying degrees of training, identifying problem solving strategies used by these...

TABLE OF CONTENTS (2006)

Kai Chen, Janos Sztipanovits, Stephen R. Schach, Gabor Karsai, Gautam Biswas, Sherif Abdelwahed, ...

To my parents To my beloved wife, Yongjie ii ACKNOWLEDGMENTS I am greatly appreciative and thankful to my advisor, Dr. Janos Sztipanovits, for his scientific vision, detailed guidance, great patience...

Efficient Simulation of Component-Based Hybrid Models Represented as Hybrid Bond Graphs (2006)

Matthew Daigle, Matthew Daigle, Indranil Roychoudhury, Indranil Roychoudhury, Gautam Biswas, Gautam Biswas, ...

matthew.j.daigle, indranil.roychoudhury, gautam.biswas,

Multiple fault diagnosis in complex physical systems (2006)

A Decision-Theoretic Planner with Dynamic Component Reconguration for Distributed Real-Time Applications (2006)

Multiple fault diagnosis is a challenging problem because the number of candidates grows exponentially in the number of faults. In addition, multiple faults in dynamic systems may be hard to detect,...

John S. Kinnebrew, Nishanth Shankaran, Gautam Biswas, Douglas C. Schmidt

Middleware is increasingly being used to develop and deploy components in distributed real-time and embedded (DRE) systems, such as the NASA sensor web 1 composed of networked remote sensing...

Efficient Simulation of Component-Based Hybrid Models Represented as Hybrid Bond Graphs (2006)

Matthew Daigle, Indranil Roychoudhury, Gautam Biswas, Xenofon Koutsoukos

A Bayesian approach to efficient diagnosis of incipient faults (2006)

Indranil Roychoudhury, Gautam Biswas, Xenofon Koutsoukos

Safe, reliable, and efficient operation of complex dynamical systems requires the ability to detect, isolate, and identify degradation in system components. Degradations are typically modeled as...

Integrated systems health management to achieve autonomy in complex systems (2006)

Gautam Biswas, Eric J. Manders

Abstract: Integrated Systems Health Management (ISHM) provides the ability to maintain system health and performance over the life of a system. For safety-critical systems, ISHM must maintain safe...

Distributed diagnosis of coupled mobile robots (2006)

Center Management Files: Robust Systems Working Group: Progress and Discussion (2005)

Abstract — Fault diagnosis of coupled mobile robots requires a large number of measurements to be communicated either between the robots or from the robots to a central diagnoser. As computational...

Rodriguez, Luis F., Biswas, Gautam, Gardner, Guy, Hanford, Tony, Hogan, John A., Jones, Harry, ...

16 slides Related Documents:WC11, WC12, WC13, WC14, WC15, WC16, WC18, WC19

Introducing embedded software and systems education and advanced learning technology in an engineering curriculum. [Special issue on university education] (2005)

Sztipanovits, Janos, Biswas, Gautam, Frampton, Ken, Gokhale, Aniruddha, Howard, Larry, Karsai, Gabor, ...

Embedded software and systems are at the intersection of electrical engineering, computer engineering, and computer science, with, increasing importance, in mechanical engineering. Despite the clear...

Teaching About Dynamic Processes: A Teachable Agents Approach (2005)

Ruchie Gupta, Yanna Wu, Gautam Biswas

Abstract. This paper discusses the extensions that we have made to Betty’s Brain teachable agent system to help students learn about dynamic processes in a river ecosystem. Students first learn...

A hybrid control system design and implementation for a three tank testbed (2005)

Jian Wu, Student Member, Gautam Biswas, Senior Member, Sherif Abdelwahed, Eric M

Abstract — This paper discusses methodologies for designing limited lookahead supervisory controllers for a class of embedded systems that can be modeled as switching hybrid system (SHS). In the...

A Consistency-based Robust Diagnosis Approach for Temporal Causal Systems (2005)

Computer Games as Intelligent Learning Environments: A River Ecosystem Adventure (2005)

In this paper we present a consistency-based robust diagnosis approach for a class of temporal causal systems modeled as timed failure propagation graphs. Timed failure propagation graphs are causal...

Jason TAN, Chris BEERS, Ruchi GUPTA, Gautam BISWAS

Our goal in this work has been to bring together the entertaining and flow characteristics of video game environments with proven learning theories to advance the state of the art in intelligent...

Introducing Embedded Software and Systems Education and Advanced Learning Technology in an Engineering Curriculum (2005)

Janos Sztipanovits Gautam, Gautam Biswas, Ken Frampton, Anirudda Gokhale, Larry Howard, Gabor Karsai, ...

Embedded software and systems are at the intersection of electrical engineering, computer engineering, and computer science, with increasing importance in mechanical engineering. Despite the clear...

Relative measurement orderings in diagnosis of distributed physical systems (2005)

Introducing embedded software and systems education and advanced learning in an engineering curriculum (2005)

Fault diagnosis in large-scale, distributed physical systems often requires the use of a large number of measurements to achieve complete diagnosability. The computational complexity of the diagnosis...

Janos Sztipanovits, Gautam Biswas, Ken Frampton, Anirudda Gokhale, Larry Howard, Gabor Karsai, ...

Embedded software and systems are at the intersection of electrical engineering, computer engineering, and computer science, with increasing importance in mechanical engineering. Despite the clear...

Designing distributed diagnosers for complex physical systems (2005)

Indranil Roychoudhury, Gautam Biswas, Xenofon Koutsoukos, Sherif Abdelwahed

Online diagnosis methods require large computationally expensive diagnosis tasks to be decomposed into sets of smaller tasks so that time and space complexity constraints are not violated. This paper...

Introducing embedded software and systems education and advanced learning in an engineering curriculum (2005)

Janos Sztipanovits, Gautam Biswas, Ken Frampton, Larry Howard, Gabor Karsai, T. John Koo, ...

Embedded software and systems are at the intersection of electrical engineering, computer engineering,

Committee: (2004)

Aditya Agrawal, Janos Sztipanovits, Doug Schmidt, Jeremy Spinrad, Mark Ellingham, Gautam Biswas

System diagnosis using hybrid failure propagation graphs (2004)

A model-integrated computing tool-suite for fault adaptive control (2004)

Abstract. This paper presents an approach for robust diagnosis of a general class of dynamic systems based on a temporal failure propagation model. The proposed approach can be applied to a general...

Eric-j. M, Gautam Biswas, John Ramirez, Nagabhusan Mahadevan, Wu Jian, Sherif Abdelwahed

Abstract. The proliferation of safety-critical embedded systems has created great demands for online fault diagnosis and fault-adaptive control techniques. A number of methodologies have been...

Developing learning by teaching environments that support self-regulated learning (2004)

Gautam Biswas, Krittaya Leelawong, Kadira Belynne, Karun Viswanath, Daniel Schwartz, Joan Davis

Abstract. Betty’s Brain is a teachable agent system in the domain of river ecosystems that combines learning by teaching and self-regulation strategies to promote deep learning and understanding....

System Diagnosis Using Hybrid Failure Propagation Graphs (2004)

A Multi-Agent Architecture Implementation of Learning by Teaching Systems (2004)

This paper presents an approach for robust diagnosis of a general class of dynamic systems based on a temporal failure propagation model. The proposed approach can be applied to a general class of...

Karun Viswanath, Bilikiss Adebiyi, Krittaya Leelawong, Gautam Biswas

Our group has been designing and implementing learning environments that promote deep understanding and transfer in complex domains. We have adopted the learning by teaching paradigm, and developed...

Towards fault-adaptive control of complex dynamical systems (2003)

Gyula Simon, Gábor Karsai, Gautam Biswas, Sherif Abdelwahed, Nagabhushan Mahadevan, Tivadar Szemethy, ...

Abstract – Complex control applications require capabilities for accommodating faults in the controlled plant. Fault accommodation involves the detection and isolation of faults, and then taking...

Towards fault-adaptive control of complex dynamical systems (2003)

Gyula Simon, Gábor Karsai, Gautam Biswas, Sherif Abdelwahed, Nagabhushan Mahadevan, Tivadar Szemethy, ...

Abstract – Complex control applications require capabilities for accommodating faults in the controlled plant. Fault accommodation involves the detection and isolation of faults, and then taking...

Robust Diagnosis of Switching Systems (2003)

Teachable Agents: Learning by Teaching Environments for Science Domains (2003)

This paper presents an approach for robust diagnosis of switching systems based on an extended version of the timed failure propagation graph model. The extended failure propagation graph model is a...

Krittaya Leelawong, Karun Viswanath, Joan Davis, Gautam Biswas, Nancy Vye, Kadira Belynne, ...

The crisis in science education and the need for innovative computer-based learning environments has prompted us to develop a multi-agent system, Betty’s Brain that implements the learning by...

A robust method for hybrid diagnosis of complex systems (2003)

Gautam Biswas, Gyula Simon, Nagabhushan Mahadevan, Sriram Narasimhan, John Ramirez L, Gabor Karsai I

The AI model-based diagnosis community has developed qualitative reasoning mechanisms for fault isolation in dynamic systems. Their emphasis has been on the fault isolation algorithms, and little...

Hybrid Modeling and Diagnosis in the Real World: A Case Study (2002)

Narasimhan, Sriram, Biswas, Gautam, Karsai, Gabor, Szemethy, Tivadar, Bowman, Tim

Applying model-based diagnosis techniques to systems that exhibit hybrid behavior presents an interesting set of challenges that mostly revolve around interactions of the continuous and discrete...

Assessing impacts of small perturbations using a model-based approach. (2002)

Dale, Michael Bodley, Dale, Patricia Ellen, Li, Cen, Biswas, Gautam

When examining the effects of a disturbance on a complex system like vegetation it is difficult to distinguish between those changes that affect the processes underlying the functioning of the system...

Assessing impacts of small perturbations using a model-based approach. (2002)

Dale, Michael Bodley, Dale, Patricia Ellen, Li, Cen, Biswas, Gautam

When examining the effects of a disturbance on a complex system like vegetation it is difficult to distinguish between those changes that affect the processes underlying the functioning of the system...

Assessing impacts of small perturbations using a model-based approach. (2002)

Dale, Michael Bodley, Dale, Patricia Ellen, Li, Cen, Biswas, Gautam

When examining the effects of a disturbance on a complex system like vegetation it is difficult to distinguish between those changes that affect the processes underlying the functioning of the system...

Hybrid modeling and diagnosis in the real world: A case study (2002)

Sriram Narasimhan, Gautam Biswas, Gabor Karsai, Tivadar Szemethy

Applying model-based diagnosis techniques to systems that exhibit hybrid behavior presents an interesting set of challenges that mostly revolve around interactions of the continuous and discrete...

A hybrid modeling and simulation methodology for dynamic physical systems (2002)

Pieter J Mosterman, Gautam Biswas, Pieter J. Mosterman, Gautam Biswas

On behalf of:

The Effects of Feedback in Supporting Learning by Teaching in a Teachable Agent Environment (2002)

Krittaya Leelawong, Joan Davis, Nancy Vye, Gautam Biswas, Daniel Schwartz, Kadira Belynne, ...

Abstract: The idea that teaching others is a powerful way to learn is both intuitively compelling, and one that has garnered support in the research literature. The present study investigates aspects...

Assessing impacts of small perturbations using a model-based approach. (2002)

Dale, Michael Bodley, Dale, Patricia Ellen, Li, Cen, Biswas, Gautam

When examining the effects of a disturbance on a complex system like vegetation it is difficult to distinguish between those changes that affect the processes underlying the functioning of the system...

Building models of ecological dynamics using HMM based temporal data clustering - A preliminary study (2001)

Cen, Li, Biswas, Gautam, Dale, Michael, Dale, Patricia Ellen, F Hoffman

Yes

Building models of ecological dynamics using HMM based temporal data clustering - A preliminary study (2001)

Cen, Li, Biswas, Gautam, Dale, Michael, Dale, Patricia Ellen

Yes

Building models of ecological dynamics using HMM based temporal data clustering - A preliminary study (2001)

Cen, Li, Biswas, Gautam, Dale, Michael, Dale, Patricia Ellen

Extending intelligent learning environments with teachable agents to enhance learning (2001)

Gautam Biswas, Thomas Katzlberger, John Bransford, Daniel Schwartz

Extending intelligent learning environments with teachable agents to enhance learning (2001)

Gautam Biswas, Thomas Katzlberger, John Bransford, Daniel Schwartz

Extending intelligent learning environments with teachable agents to enhance learning (2001)

Gautam Biswas, Thomas Katzlberger, John Bransford, Daniel Schwartz

Fault-Adaptive Control: A CBS Application (2001)

Gabor Karsai, Gautam Biswas, Tal Pasternak, Sriram Narasimhan, Gabor Peceli, Gyula Simon, ...

Complex control applications require a capability for accommodating faults in the controlled plant. Fault accommodation involves the detection and isolation of faults, and taking an appropriate...

Building models of ecological dynamics using HMM based temporal data clustering - A preliminary study (2001)

Cen, Li, Biswas, Gautam, Dale, Michael, Dale, Patricia Ellen

Qualitative Diagnosis of Systems With Models That Include a Class of Algebraic Loops (2000)

Pieter J. Mosterman, Eric J. Manders, Gautam Biswas

Transcend is a model based diagnosis system for fault detection and isolation of abrupt faults in engineered systems such as fast breeder reactors and automobile engines [2]. It applies models of...

Hybrid systems diagnosis (2000)

Sheila Mcilraith, Gautam Biswas, Dan Clancy, Vineet Gupta

Abstract. This paper reports on an on-going project to investigate techniques to diagnose complex dynamical systems that are modeled as hybrid systems. In particular, we examine continuous systems...

Fault isolation in hybrid systems combining model based diagnosis and signal processing (2000)

Sriram Narasimhan, Feng Zhao, Gautam Biswas, Elmer Hung

Abstract. Sensor-rich systems typically employ extensive signal processing techniques for fault detection and isolation tasks. Sensor-poor systems, on the other hand, require system models and...

Hybrid Systems Diagnosis (2000)

Sheila Mcilraith, Gautam Biswas, Dan Clancy, Vineet Gupta

. This paper reports on an on-going project to investigate techniques to diagnose complex dynamical systems that are modeled as hybrid systems. In particular, we examine continuous systems with...

Bayesian Fault Detection and Diagnosis in Dynamic Systems (2000)

Uri Lerner, Ronald Parr, Daphne Koller, Gautam Biswas

This paper addresses the problem of tracking and diagnosing complex systems with mixtures of discrete and continuous variables. This problem is a difficult one, particularly when the system dynamics...

In Proceedings of the Seventeenth National Conference on Artificial Intelligence (AAAI-00), (2000)

Pages Austin Texas, Uri Lerner, Ronald Parr, Daphne Koller, Gautam Biswas

This paper addresses the problem of tracking and diagnosing complex systems with mixtures of discrete and continuous variables. This problem is a difficult one, particularly when the system dynamics...

Temporal pattern generation using hidden markov model based unsupervised classification (1999)

A comprehensive methodology for building hybrid models of physical systems (1999)

Abstract. This paper describes a clustering methodology for temporal data using hidden Markov model(HMM) representation. The proposed method improves upon existing HMM based clustering methods in two...

Pieter J. Mosterman, Gautam Biswas

This paper describes a comprehensive and systematic framework for building mixed continuous/discrete, i.e., hybrid physical system models. Hybrid models are a natural representation for embedded...

Finding Behavior Patterns from Temporal Data using Hidden Markov Model based Unsupervised Classification (1999)

G.: Clustering sequence data using hidden Markov model representation (1999)

This paper describes a clustering methodology for temporal data using hidden Markov model(HMM) representation. The proposed method improves upon existing HMM based clustering methods in two ways: (i)...

Teachable Agents: Combining Insights from Learning Theory and Computer Science (1999)

This paper proposed a clustering methodology for sequence data using hidden Markov model(HMM) representation. The proposed methodology improves upon existing HMM based clustering methods in two ways:...

Sean Brophy, Gautam Biswas, Thomas Katzlberger, John Bransford, Daniel Schwartz

Abstract. We discuss computer environments that invite students to learn by instructing “teachable agents ” (TA’s) who venture forth and attempt to solve problems that require knowledge of...

Lee Barford, Eric M, Gautam Biswas, Pieter Mosterman, Vishnu Ram, Joel Barnett, ...

signal processing, signal interpretation, signal classification In engineering systems, diagnosis is the process of detecting anomalous system behavior and then isolating the cause for this behavior....

Assessing Digital Circuit Design. (1998)

Goldman, Susan R., Biswas, Gautam

Cognitive diagnosis of expertise relies on characterizing expertise in the domain of interest. The focus of this project was on characterizing and assessing design problem solving in the area of...

Analysis of Student Understanding of Basic AC Concepts (1998)

Biswas, Gautam, Schwartz, Dan, Bhuva, Bharat, Bransford, John, Brophy, Sean

This project began with a study on student understanding of the basic concepts of voltage, current, and power in DC and AC circuits. Protocol studies revealed that beginning student knowledge of the...

Assessing Problem Solving Skills in Understanding and Troubleshooting AC Circuits (1998)

Biswas, Gautam, Schwartz, Daniel, Bhuva, Bharat, Bransford, John, Holton, Daniel

Assessing Student understanding of Concepts in Electricity to inform instructional decisions. We have been investigating students' knowledge and understanding of basic concepts in electricity and...

Conceptual Clustering with Numeric-and-Nominal Mixed Data - A New Similarity Based System (1998)

Iterate: A conceptual clustering algorithm for data mining (1998)

This paper presents a new Similarity Based Agglomerative Clustering(SBAC) algorithm that works well for data with mixed numeric and nominal features. A similarity measure, proposed by Goodall for...

Gautam Biswas, Senior Member, Jerry B. Weinberg, Douglas H. Fisher

Abstract | The data exploration task can be divided into three interrelated subtasks: (i) feature selection, (ii) discovery, and (iii) interpretation. This paper describes an unsupervised discovery...

Conceptual Clustering With Numeric-and-Nominal Mixed Data-A New Similarity Based System (1998)

Cen Li, Gautam Biswas, Senior Member

This paper presents a new Similarity Based Agglomerative Clustering(SBAC) algorithm that works well for data with mixed numeric and nominal features. A similarity measure, proposed by Goodall for...

Anchored interactive learning environments (1997)

Thad Crews, Gautam Biswas, Susan Goldman, John Bransford

Advances in computer technology and multi-media systems have led to widespread interest in computer-based instruction and learning environments. The use of video, animation, graphics, and simulation...

Iterate: A conceptual clustering method for knowledge discovery in databases (1995)

Gautam Biswas, Jerry Weinberg, Cen Li

Smart Tools, A multi-representational approach to teaching functional relationships (1995)

Stephen Owens, Gautam Biswas, Mitchell Nathan, Linda Zech, John Bransford, Susan Goldman

This paper discusses the design and development of Smart Tools Builder, an instructional learning environment (ILE) for teaching students about distance, time, and speed calculations. This system is...

A Framework for Scientific Discovery in Geological Databases (1995)

Knowledge-based Scientific Discovery in Geological Databases (1995)

volume equation[1] Recoverable Reserves in STB = BRV N G OE Shc RF 6:29 FV F ; where BRV = Bulk Rock Volume in m 3 N/G = Net/Gross ratio of the reservoir rock body making up the BRV OE = average...