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Chemical Engineering

Publications - Risk Identification, Analysis and Management in Complex Systems

Keywords: Fault Detection, Fault Diagnosis, Equipment Prognostics, Failure Diagnostics, Process and equipment safety,  Neural Networks, Expert Systems, Multivariate statistics, PCA and PLS, Fuzzy Logic, Sensor networks, Qualitative Trend Analysis, Data Reconciliation,   Signed Directed Graphs, Petri nets

A. Refereed Journal Publications

  1. V. Venkatasubramanian, R. Rengaswamy, K. Yin and S. N. Kavuri, “Review of Process Fault Diagnosis - Part I: Quantitative Model-Based Methods”, Computers and Chemical Engineering, 27(3), 293-311, 2003. 
  2. V. Venkatasubramanian, R. Rengaswamy and S. N. Kavuri, “Review of Process Fault Diagnosis - Part II: Qualitative Models and Search Strategies”, Computers and Chemical Engineering, 27(3), 313-326, 2003. 
  3. V. Venkatasubramanian, R. Rengaswamy, S. N. Kavuri and K. Yin, “Review of Process Fault Diagnosis - Part III: Process History Based Methods”, Computers and Chemical Engineering, 27(3), 327-346, 2003. 
  4. S. Dash, R. Rengaswamy and V. Venkatasubramanian, “Fuzzy-Logic Based Trend Classification for Fault Diagnosis of Chemical Processes”, Computers and Chemical Engineering, 27(3), 347-362, 2003.
  5. S. Dash and V. Venkatasubramanian, “An Integrated Framework for Abnormal Event Management and Process Hazards Analysis”, AIChEJ., 49(1), 124-139, 2003.
  6. Y. J. Huang, G. V. Reklaitis and V. Venkatasubramanian, “Model decomposition based method for solving general dynamic optimization problems”, Computers and Chemical Engineering, 26(6), 863-873, 2002.
  7. Y. J. Huang, G. V. Reklaitis, and V. Venkatasubramanian, "A Model-Based Fault Accommodation System", Ind Eng Chem Res, 41(16), 3806-3821, 2002.
  8. P. Vachhani, R. Rengaswamy, and V. Venkatasubramanian, "A Framework for Integrating Diagnostic Knowledge with Nonlinear Optimization for Data Reconciliation and Parameter Estimation in Dynamic Systems", Chem Eng Sci, 56(6), 2133-2148, 2001.
  9. R. Rengaswamy, D. Mylaraswamy, K. E. Arzen, and V. Venkatasubramanian, "A Comparison of Model-Based and Neural Network-Based Diagnostic Methods", Eng Appl Artif Intel, 14(6), 805-818, 2001.
  10. R. Rengaswamy, T. Hagglund, and V. Venkatasubramanian, "A Qualitative Shape Analysis Formalism for Monitoring Control Loop Performance", Eng Appl Artif Intel, 14(1), 23-33, 2001.
  11. H. Vedam and V. Venkatasubramanian, "PCA-SDG Based Process Monitoring and Fault Diagnosis", Control Engineering Practice, 7(7), 903-917, 1999.
  12. A. Aoyama and V. Venkatasubramanian, "Internal Model Control Framework Using Neural Networks for the Modeling and Control of a Bio-reactor", Eng Appl Artif Intel, 8(6), pp. 689-701, 1995. Download
  13. A. Aoyama, F. J. Doyle, and V. Venkatasubramanian, "Control-Affine Neural Network Approach for Nonminimum-Phase Nonlinear Process Control", J. of Process Control, 6(1), pp. 17-26, 1995.
  14. A. Aoyama, F. J. Doyle, and V. Venkatasubramanian, "Fuzzy Neural Networks for Nonlinear Process Control ", Eng Appl Artif Intel, 8(5), 483-498, 1995. Download
  15. A. Aoyama, F. J. Doyle, and V. Venkatasubramanian, "Control-Affine Fuzzy Neural Network Approach for Nonlinear Process Control", J. of Process Control, 5(6), 375-386, 1995.
  16. R. Rengaswamy and V. Venkatasubramanian, "A Syntactic Pattern Recognition Approach for Process Monitoring and Fault Diagnosis", Eng Appl Artif Intel, 8(1), 35-51, 1995. Download
  17. V. Venkatasubramanian and R. Vaidhyanathan, "A Knowledge-Based Framework for Automating HAZOP Analysis", AIChE J, 40(3), 496-505, 1994.
  18. K. Kanakamedala, G. V. Reklaitis, and V. Venkatasubramanian, "Reactive Schedule Modification in Multipurpose Batch Chemical Plants", Ind Eng Chem Res, 33(1), 77-90, 1994.
  19. S. Kavuri and V. Venkatasubramanian, "Neural Network Decomposition Strategies for Large Scale Fault Diagnosis", Special Issue of Intl. J. Control, (Ed.) Morari and Morris, 59(3), 767-792, 1994.
  20. S. Kavuri, and V. Venkatasubramanian, "Representing Bounded Fault Classes Using Neural Networks with Ellipsoidal Activation Functions", Comput Chem Eng, 17(2), 139-163, 1993.
  21. S. Kavuri, and V. Venkatasubramanian, "Using Fuzzy Clustering with Ellipsoidal Units in Neural Networks for Robust  Fault Classification", Comput Chem Eng, 17(8), 765-784, 1993.
  22. R. Vaidyanathan and V. Venkatasubramanian, " On the Nature of Fault Space Classification Structure Developed by Neural Networks", Eng Appl Artif Intel, 5(4), 289-297, 1992.
  23. S. Kavuri and V. Venkatasubramanian, "Combining Pattern Classification and Assumption-Based Techniques for Process Fault Diagnosis", Comput Chem Eng, 16(4), 299-312, 1992.
  24. R. Vaidyanathan and V. Venkatasubramanian, "Representing and Diagnosing Dynamic Process Data Using Neural Networks", Eng Appl Artif Intel, 5(1), 11-21, 1992.
  25. V. Venkatasubramanian and T.J. Mcavoy, "Neural Network Applications in Chemical-Engineering", Comput Chem Eng, 16(4), R5-R6, 1992.
  26. M. Janusz and V. Venkatasubramanian, "Automatic Generation of Qualitative Descriptions of Process Trends for Fault Detection and Diagnosis", Eng Appl  Artif Intel, 4(5), 329-339, 1991.
  27. V. Venkatasubramanian, R. Vaidyanathan, and Y. Yamamoto, "Process Fault Detection and Diagnosis Using Neural Networks: I. Steady-State Processes", Comput Chem Eng, 14(7), 699-712, 1990.
  28. V. Venkatasubramanian and King Chan," A Neural Network Methodology for Process Fault Diagnosis", AIChE J, 35(12), 1993-2002, 1989.
  29. S. H. Rich, V. Venkatasubramanian, M. Nasrallah, and C. Matteo, "Development of a Diagnostic Expert System for a Whipped Topping Process", Journal of Loss Prevention in the Process Industries, 2(3), 145-154, 1989.
  30. S. H. Rich and V. Venkatasubramanian, "Causality-Based Failure-driven Learning in Diagnostic Expert Systems," AIChE J, 35(6), 943-950, 1989.
  31. V. Venkatasubramanian, "Towards a Specialized Shell for Diagnostic Expert Systems for Chemical Process Plants", Journal of Loss Prevention in the Process Industries, 1(2), 84-91, 1988.
  32. V. Venkatasubramanian and S. H. Rich, "An Object-Oriented Two-Tier Architecture for Integrating Compiled and Deep-Level Knowledge for Process Diagnosis", Comput  Chem Eng, 12(9-10), 903-921, 1988.
  33. S. H. Rich and V. Venkatasubramanian, "Model-Based Reasoning in Diagnostic Expert Systems for Chemical Process Plants", Comput Chem Eng, 11(2), 111-122, 1987.

B. Refereed Publications in Conference Proceedings

  1. M. R. Maurya, R. Rengaswamy and V. Venkatasubramanian, “Incipient Fault Diagnosis of Tennessee Eastman Flowsheet using Signed Directed Graph and Trend Analysis”, In supplementary proceedings of ESCAPE-12, The Hague, The Netherlands, May 26-29 2002. 
  2. Y. Huang, G.V. Reklaitis and V. Venkatasubramanian, “A General Model Based Framework For Fault Accommodation”, In supplementary proceedings of ESCAPE-12, The Hague, The Netherlands, May 26-29 2002. 
  3. M. R. Maurya, R. Rengaswamy and V. Venkatasubramanian, “Systematic Development and Application of Digraphs for Process Diagnosis and Hazards Analysis”, In 4th IFAC Workshop on On-Line Fault Detection & Supervision in the Chemical Process Industries (CHEMFAS-4), Korea, pp. 327-332, June 7-8 2001.
  4. Y. Huang, G.V. Reklaitis and V. Venkatasubramanian, “Wavelet Shrinkage Based Covariance Matrix Estimation from Process Measurements”, in the Proceedings of the 11th European Symposium on Computer Aided Process Engineering – ESCAPE-11, pp. 669-674, Denmark, May 27-30 2001. 
  5. S. Dash, S. Kantharao, R. Rengaswamy and V. Venkatasubramanian, “Application and Evaluation of a Linear/Restricted Nonlinear Observer to a Nonlinear CSTR”, in the Proceedings of the 11th European Symposium on Computer Aided Process Engineering – ESCAPE-11, Kolding, Denmark, pp 853-858, May 27-30 2001.
  6. S. Dash, R. Rengaswamy and V. Venkatasubramanian, “A Novel Interval Halving Algorithm for Process Trend Identification”, in the proceedings of the 4th IFAC Workshop on On-line Fault Detection and Supervision in the Chemical Process Industries, Korea, pp. 155-160, June 8-9 2001.
  7. S. Dash and V. Venkatasubramanian, “Offline Safety Analysis for Online Fault Diagnosis”, in the proceedings of the 4th IFAC Workshop on On-Line Fault Detection & Supervision in the Chemical Process Industries, Seoul, Korea, pp. 179-184, June 8-9 2001.
  8. R. Rengaswamy and V. Venkatasubramanian, "A fast training neural network and its updation for incipient fault detection and diagnosis", Comput Chem Eng, 24 (2-7), in the Proceedings of the Process Systems Engineering Conference (PSE 2000), 431-437, 2000.
  9. Y. Huang, G.V. Reklaitis, Venkat Venkatasubramanian, "Dynamic optimization based fault accommodation", Comput Chem Eng, 24(2-7), in the Proceedings of the Process Systems Engineering Conference ( PSE 2000),  439-444, 2000.
  10. Y. Huang, S. Dash, G.V. Reklaitis and V. Venkatasubramanian, "EKF based estimator for FDI in Model IV FCCU", SAFEPROCESS 2000, Budapest, Hungary, 14-16 June 2000. Download
  11. S. Dash and V. Venkatasubramanian, "Challenges in the Industrial Applications of Fault Diagnostic Systems", Comput Chem Eng, 24(2-7), in the Proceedings of the conference on Process Systems Engineering (PSE 2000), 785-791, 2000. Download
  12. S. Dash and V. Venkatasubramanian, "Using PHA Results for Real Time Operator Support during ASM", Computer-Aided Chemical Engineering, 8 (in the Proceedings of ESCAPE-10),  775-780, 2000. Download
  13. H. Vedam, S. Dash and V. Venkatasubramanian, "An Intelligent Operator Decision Support System for Abnormal Situation Management", Comput Chem Eng, 23 (in the Proceedings of ESCAPE 9),  S577-S580, 1999. Download
  14. H. Vedam and V. Venkatasubramanian, "Signed Digraphs for the Interpretation of PCA-based Fault Diagnosis", Proceedings of the IFAC International Conference on On-line Fault Detection and Supervision in the Chemical Process Industries, Lyon, France, June 4-5, 1998.
  15. H. Vedam, V. Venkatasubramanian, and M. Bhalodia, "A B-Spline Based Method for Data Compression, Process Monitoring and Diagnosis", Comput Chem Eng, 22 ( in the Proceedings of  ESCAPE-8), S827-S830, 1998.
  16. D. Mylaraswamy and V. Venkatasubramanian, "A Hybrid Framework for Large-scale Process Fault Diagnosis", Comput Chem Eng, 21 ( in the Proceedings of ESCAPE-7), S935-S940, 1997. Download
  17. F. J. Doyle, J. Pekny, G. V. Reklaitis and V. Venkatasubramanian, "A Graduate Course in Computer Integrated Process Operations," in the Proceedings of the European Symposium on Computer-Aided Process Engineering 7, Trondheim, Norway, May 1997.
  18. H. Vedam and V. Venkatasubramanian, "A Wavelet Theory Based Adaptive Trend Analysis System for Process Monitoring and Fault Diagnosis", in the Proceedings of the American Control Conference, Albuquerque, NM, June 1997. (Invited Paper) Download
  19. H. Vedam and V. Venkatasubramanian, "Signed Digraph-based Multiple Fault Diagnosis", Comput Chem Eng, 21 ( in the Proceedings of ESCAPE-7), S655-S660, 1997. Download
  20. D. Shin and V. Venkatasubramanian, "Intelligent Tutoring System Framework for Operator Training for Diagnostic Problem Solving", Comput Chem Eng, 20 ( in Proceedings of ESCAPE-6), S1365-S1370, 1996. Download
  21. V. Venkatasubramanian, "Towards Integrated Process Supervision: Current Trends and Future Directions", in the Proceedings of the Second IFAC International Conference on AI/KBS in Process Control, University of Lund, Lund, Sweden, Aug 1994. (Keynote address)
  22. V. Venkatasubramanian and R. Rengaswamy, "A Framework for Integrated Process Supervision", in the Proceedings of ADCHEM'94, Kyoto, Japan, May 1994.
  23. V. Venkatasubramanian and G. M. Stanley, "Integration of Process Monitoring, Diagnosis and Control: Issues and Emerging Trends", in the Proceedings of the International Conference on Foundations of Computer Aided Process Operations, FOCAPO'93, Crested Butte, CO, July 1993. (Invited Paper)
  24. S. Kavuri, and V. Venkatasubramanian, "Solving the Hidden Nodes Problem in Networks with Ellipsoidal Units and Related Issues", in the Proceedings of the International Joint Conference on Neural Networks, Baltimore, June 7-11, 1992.
  25. V. Venkatasubramanian and S. Kavuri, "Combining Unsupervised and Supervised Learning Techniques for Process Fault Diagnosis", in the NATO Advanced Study Institute on Batch Processing Systems Engineering, Turkey, June 1992. (Invited Paper)
  26. V. Venkatasubramanian, and S. Kavuri, "Intelligent Systems for Integrated Process Operations Management", in the Proceedings of the Seventh International Conference on Applications of Artificial Intelligence in Engineering, Waterloo, Canada, July 1992. (Invited Paper)
  27. S. Kavuri, and V. Venkatasubramanian, "Fault Detection and Classification Using Neural Networks with Ellipsoidal Activation Functions", in Proceedings of the IFAC International Conference on On-line Fault Detection and Supervision in the Chemical Process Industries, Newark, Delaware, April 1992.
  28. V. Venkatasubramanian, and R. Rengaswamy, "An Integrated Approach to Process Monitoring, Diagnosis, and Control Using Knowledge-based Systems and Neural Networks", in Proceedings of the IFAC International Conference on On-line Fault Detection and Supervision in the Chemical Process Industries, Newark, Delaware, April 22-24, 1992.
  29. R. Vaidhyanathan, and V. Venkatasubramanian, "Diagnosing Noisy Process Data Using Neural Networks", in the Proceedings of the IFAC International Conference on Fault Detection, Supervision and Safety of Processes, Baden, Fed Repub of Germany, Sept 10-13, 1991. (Invited Paper)
  30. V. Venkatasubramanian, "Fault Classification and Diagnosis Using Neural Networks", in the Proceedings of the Fourth International Conference on Chemical Process Control IV, South Padre Island, Texas, Feb 17-22, 1991, (Invited Paper)
  31. V. Venkatasubramanian and M. Janusz, "Generating Qualitative Process Trend Descriptions from Sensor Data for Diagnostic Applications", in the Proceedings of the Fourth International Conference on Process Systems Engineering, Montebello, Canada, Aug 1991.
  32. R. Vaidhyanathan, and V. Venkatasubramanian, "Fault Detection and Diagnosis in Dynamic Processes using Neural Networks", International Neural Network Conference, Paris, France, 9-13 July 1990, 1, pp. 393.
  33. V. Venkatasubramanian, and Prasad Dhurjati, "An Object-Oriented Knowledge Base Representation for the Expert System FALCON", in the Proceedings of the International Conference on Foundations of Computer Aided Process Operations, Park City, UT, July 1987.
  34. V. Venkatasubramanian, and S.H. Rich, "Reasoning Using Heuristic and First-Principles Knowledge for Diagnosis of Process Plant Failures", Second International Conference on Applications of Artificial Intelligence in Engineering, Boston, MA, Aug. 1987, pp. 131-144.
  35. D. Sriram, R. Banares, V. Venkatasubramanian, A. Westerberg, and M.D. Rychener, "Knowledge-Based Expert Systems in Chemical Engineering", in the Proceedings of the International Conference on Computer Aided Technologies, Montreal, Canada, Sept. 1985, pp. 79-82.
  36. V. Venkatasubramanian, "An Expert System Based on a Stochastic Parallel Network", in the Proceedings of Expert Systems in Government Conference, McLean, VA, Oct. 1985, pp. 77-80.
  37. V. Venkatasubramanian, "Inexact Reasoning in Expert Systems: A Stochastic Parallel Network Approach", in the Proceedings of the Second Conference on Artificial Intelligence Applications, Miami, FL, Dec. 1985, pp. 191-195.                    
C. Refereed Papers as Book Chapters
  1. S. R. McVey, J. F. Davis, and V. Venkatasubramanian, " Intelligent Systems in Process Operations, Design and Safety", Computers in Chemical Engineering Education, 25th Anniversary Issue, CACHE, Austin, Texas, 1997.
  2. V. Venkatasubramanian and R. Rengaswamy, "Clustering and Statistical Techniques in Neural Networks", in Neural Networks in Chemical Engineering, A. Bulsari (Ed.), Elsevier, 1995, 25 pages. (Invited book chapter)

D. Papers presented at conferences and meetings

  1. F. Mu and V. Venkatasubramanian, “A Framework for Abnormal Situation Management using On-Line HAZOP Analysis”, AICHE Annual Meeting, Indianapolis, IN, November 3-8 2002.
  2. M. R. Maurya, R. Rengaswamy and V. Venkatasubramanian, “Signed Directed Graph and Trend Analysis-Based Framework for Incipient Fault Diagnosis- Application to Tennessee Eastman Case Study”, [263h] AIChE Annual Meeting, Indianapolis, IN, November 3-8 2002.
  3. S. Dash, R. Rengaswamy and V. Venkatasubramanian, “Fault Diagnosis in a Nonlinear CSTR using Observers”, [258b] AIChE Annual Meeting, Reno, NV, November 4-9 2001.
  4. M. R. Maurya, R. Rengaswamy and V. Venkatasubramanian, “Systematic Development of Digraphs and Application in Process Operations”, [267b] AIChE Annual Meeting, Reno, NV, November 4-9 2001.
  5. S. Dash and V. Venkatasubramanian, "An Integrated Framework for Abnormal Situation Management and Process Hazards Analysis", [234f] Presented the AIChE Annual meeting, Dallas, TX, Nov 1999.
  6. S. Dash and V. Venkatasubramanian, "Application of a Qualitative Trend Analysis based Fault-Diagnosis system to an Industrial Case Study: Results", [231f] Presented the AIChE Annual meeting, Dallas, TX, Nov 1999.
  7. H. Vedam, and V. Venkatasubramanian, "Automated Process Fault Diagnosis Using Principal Components Analysis and Signed Digraphs", AIChE Annual Meeting, Miami, FL, November 1998.
  8. H. Vedam and V. Venkatasubramanian, "A B-Splines based Adaptive Trend Analysis Algorithm for Process Monitoring", AIChE Annual Meeting, Miami, FL, November 1998.
  9. D. Mylaraswamy, R. Rengaswamy, V. Venkatasubramanian, and K-E. Arzen, "Probability Density Functions for Large-scale Process Fault Diagnosis", AIChE Annual Meeting, Chicago, IL, November 1996.
  10. A. Aoyama, V. Venkatasubramanian and F. J. Doyle, "Control-Affine Fuzzy Neural Network Approach for Nonlinear Process Control", AIChE Annual Meeting, Miami, FL, November 1995.
  11. D. Mylaraswamy, A. Wallen, V. Venkatasubramanian, and K-E. Arzen, "A Model-based Hybrid Neural Network Architecture for Fault Diagnosis", AIChE Annual Meeting, Miami, FL, November 1995.
  12. F. J. Doyle, T. Kendi and V. Venkatasubramanian, "Purdue Control Modules: A MATLAB Package for Undergraduate Process Control", AIChE Annual Meeting, Miami, FL, November 1995.
  13. R. Rengaswamy, T. Hagglund, and V. Venkatasubramanian, "A Qualitative Shape Analysis Procedure for Automatic Monitoring of Control Loop Performance", AIChE Annual Meeting, Miami, FL, November 1995.
  14. V. Venkatasubramanian, "Intelligent Systems for Process Diagnosis and Safety," CHEMCON'95, Madras, India, Dec 1995.
  15. D. Mylaraswamy, S. Kavuri, and V. Venkatasubramanian, "Automated Development of Causal Models for Fault Diagnosis", AIChE Annual Meeting, San Francisco, November 1994.
  16. A. Aoyama and V. Venkatasubramanian, "Integrating Neural Networks with First-Principles Knowledge for Bioreactor Modeling and Control", AIChE Annual Meeting, St. Louis, MO, November 1993.
  17. R. Rengaswamy, S. Kavuri, and V. Venkatasubramanian, "A Unified Framework for Integrating Data Reconciliation, Monitoring, and Fault Diagnosis", AIChE Annual Meeting, St. Louis, MO, November 1993.
  18. R. Rengaswamy, S. Kavuri, and V. Venkatasubramanian, "Mixture Density Approximation of Process Data for Monitoring and Control", AIChE Annual Meeting, St. Louis, MO, November 1993.
  19. S. Kavuri, and V. Venkatasubramanian, "Decomposition Strategies for Neural Networks for Large Scale Fault Diagnosis", AIChE Annual Meeting, Miami, FL, November 1992.
  20. V. Venkatasubramanian, and R. Rengaswamy, "Integrating Monitoring, Diagnosis, and Control Tasks for Process Operations Management", AIChE Annual Meeting, Miami, FL, November 1992.
  21. S. Kavuri, and V. Venkatasubramanian, "Improving Fault Classification by Neural Networks using Ellipsoidal Activation Functions", AIChE Annual Meeting, Los Angeles, Nov 1991.
  22. V. Venkatasubramanian, and R. Rengaswamy, "Extraction of Qualitative Process Trends from Noisy Data Using Neural Networks", AIChE Annual Meeting, Los Angeles, Nov 1991.
  23. M. Janusz, and V. Venkatasubramanian, "Automatic Generation of Qualitative Descriptions of Process Trends and Its Diagnostic Applications", AIChE Annual Meeting, Chicago, Nov 1990.
  24. R. Vaidyanathan, and V. Venkatasubramanian, "Representing and Diagnosing Process Trends Using Neural Networks", AIChE Annual Meeting, Chicago, Nov 1990.
  25. V. Venkatasubramanian, and K. Chan, "A Neural Network Methodology for Process Fault Diagnosis", AIChE Spring National Meeting, Orlando, FL, April 1990.
  26. K. V. Suryanarasimham, and V. Venkatasubramanian, "Integrating Qualitative Simulation with Diagnostic Reasoning", AIChE Spring National Meeting, Houston, TX, April 1989.
  27. M. Nasrallah, S. H. Rich, and V. Venkatasubramanian, "Development of a Diagnostic Expert System for the Whipped Topping Process", AIChE Spring National Meeting, New Orleans, LA, April 1988.
  28. V. Venkatasubramanian and S.H. Rich, "Integrating Experiential and Deep-Level Knowledge in Diagnostic Expert Systems", in NSF-AAAI Workshop on Artificial Intelligence in Process Engineering, Columbia University, NY, Mar 1987.
  29. V. Venkatasubramanian and S.H. Rich, "Model-Based Reasoning for Fault Diagnosis", in AIChE Spring National Meeting, Houston, TX, Apr 1987
  30. V. Venkatasubramanian and K.V. Suryanarasimham, "Causal Modeling for Process Safety Analysis", in AIChE National Meeting, New York, NY, Nov 1987.
  31. V. Venkatasubramanian and S.H. Rich, "Failure-Driven Learning in Diagnostic Expert Systems", in AIChE National Meeting, New York, NY, Nov 1987.

E. Books

  1. Proceedings of the International Conference on Intelligent Systems in Process Engineering, Editors: J. F. Davis, G. Stephanopoulos and V. Venkatasubramanian, AIChE Symposium Series, vol. 92, 1996.
  2. Advanced Reasoning Architectures for Expert Systems, Co-authored with Professor Lyle Ungar of the University of Pennsylvania, Published by The CACHE Corporation, 1990, 110 pages.
  3. Knowledge-Based Systems in Process Engineering: Case Studies in Heuristic Classification, Published by The CACHE Corporation, Austin, TX, 1989, 260 pages.
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