Dr. G. Ravindran

Professor

Head SQC and OR Unit Chennai

Email : gravi@hotmail.com
Phone No: 044-23740612
Current Position : Professor, Indian Statistical Institute
Qualifications
  • Ph.D. Indian Statistical Institute, India, 1987.
    Title of Thesis: Completely mixed games and global univalence.
Positions Held
  • Indian National Science Academy (INSA) Visiting Scholar, Polish Academy of Sciences, Warsaw.March-June, 1989.
  • Center for Operations Research and Econometrics Belgium,1989- 90.
  • Indian Statistical Institute, Bangalore.1992- till date.
  • Visiting Professor, University of Maryland at Baltimore county, July- August ,1997 and July-August 2013.
  • Visiting professor, Beijing Jiotong University, China, May 2013.
Honors/Awards etc
  • INSA visiting professor to Polish Academy of Sciences (March 15- May 31, 1989)
    Nominated by the Indian National Science Academy under the scientific exchange programme to visit Polish Academy of Sciences and gave lectures at the Banach Centre and the Institute of Computer Sciences and Technical University of Wroclau and also fruitfully developed research work during the visit.
  • Research fellow at C.O.R.E. Belgium. (Oct 1989-Aug 1990)
    Visited the Center for Operations Research and Econometrics as a post doctoral Research fellow.
  • Visited as an adjunct faculty, UMBC, USA, July- August 2013.
Research Interests
  • Optimization
  • Global Univalence
  • Mathematical Programming and Game Theory
  • Mathematical Finance
  • Matrix Theory
  • Semi-definite linear Complementarity problems
  • Cooperative games
  • Stochastic Games
  • Design of experiments and Quality Engineering
Selected Publications
  1. M. Seetharama Gowda, and G. Ravindran On the game-theoretic value of a linear transformation relative to a self-dual cone, Linear Algebra and its Applications 469 (2015) 440–463.
  2. J. Tao, I. Jeyaraman, and G. Ravindran, More results on column sufficiency property in Euclidean Jordan algebras, Annals Of Operations Research, August 2016, Volume 243, Issue 1, pp 229–243.
  3. J.Fan, J.Tao, and G. Ravindran, On the structure of the set of Z-Transformation on proper cones, Pacific J of Optimization, 2017, Vol 13, No 2, pp 219-226.
  4. Kavita Bisht, G. Ravindran and K. C. Siva Kumar, Pseudo Schur Complements, Pseudo Principal Pivot Transforms and their Inheritance Properties, Electronic J of linear algebra , vol 30, 2015. Pp 454-477.
  5. A.Sugumaran , V.Thangaraj and G.Ravindran, Average rules for Cooperative TU Games, International Game Theory Review, Volume 15, Issue 04, December 2013.
  6. M.S. Gowda and Jiyuan Tao and G. Ravindran On the P-property of of Z and Lyapunov-like transformations on Euclidean Jordan Algebras. Linear algebra and its applications, 2012, vol. 436, Pp 2201-2209.
  7. Nagarajan, K. , Parthasarathy, T. and Ravindran, G. On Solving Subclasses of Multi-Player Stochastic Games via Linear Complementarity Problem Formulations: A Survey and Some New Results. Journal of Optimization and Engineering, 2012, 435-457.
  8. Nagarajan Krishnamurthy, T. Parthasarathy and G. Ravindran, , Polynomial Time Algorithms for Subclasses of Simple Stochastic Games and Switching Control Stochastic Games, Advances and applications in Game Theory, edited by R.K.Mishra, S.B.Rao, etal, 2012, 112-127.
  9. A.Chandrasekharan, T. Parthasarathy. and G.Ravindran, On Strong Z- matrices, J of Linear Algebra and its applications, 2010, vol 432, no 4, Pp 964-969.
  10. K. Nagarajan, T. Parthasarathy, and G. Ravindran, Order Field property of Mixtues of Stochastic Games, Sankhya, A, 2010, vol 72, pp 246-275.
  11. Nagarajan, K. Parthasarathy,T. and G. Ravindran, Communication Complexity of Stochastic games, Proceedings of International Conference on Game Theory for Networks, Istanbul Turkey, IEEE Press, NJ, USA, 411-417, 2009.
  12. Gijo, E.V. and G. Ravindran, Quality in the construction industry : An application of DOE with Goal Programming, Total Quality Management, 2008, Vol 19, No 12, Pp 1249-1255.
  13. A. Chandrasekaran , T. Parthasarathy and G.Ravindran, Bankruptcy problems- a game theoretic Analysis, Proceedings of the National Conf. on Management Systems and Practices, IIT Chennai, 2007.
  14. G.Ravindran, Almost N-matrices and Global univalence, Proceedings of the Workshop on Global Asymptotic Stability Jacobian Conjecture, University of Trento, Italy.
  15. Y. Song, M.S.Gowda and G.Ravindran On some interconnections between strict monotonicity, GUS and P properties in semi definite linear compelementarity problems, Linear Algebra and its applications, 2003, vol 370, 355- 368.
  16. T.Parthasarathy and G. Ravindran, Global Univalence and Jacobian Conjecture, Applicable Mathematics in the Golden Age, edited by J.C.Misra, Narosa Publishing House, New Delhi, 2002, pp 378-408.
  17. U.H. Acharya, T.S.Rao, and G. Ravindran Optimization of composition of Brakepad using goal Programming , Intl. J of Management and Systems, 2002, vol 18, 129-140.
  18. A. Biswas, T. Parthasarathy and G. Ravindran Stability and largeness of the core. Games Econom. Behav. 2001, vol 34,no2 , 227--237. {Math.Reviews [MR] 2001 k :91020.}
  19. G. Ravindran, and M.S.Gowda Regularization of P_0 -functions in box variational inequality problems, SIAM Journal on Optimization, 2000, vol 11, 748-760. {[MR] 2001 m :90113.}
  20. A. Biswas, G. Ravindran, and T. Parthasarathy) Stability and largeness of core for symmetric games. International J Game Theory, 2000, vol 29 11-22. {[MR] 2001 h :91010.}
  21. Y.Song, M.S.Gowda, and G. Ravindran, On characterizations of P and P_0-properties in nonsmooth functions, Mathematics of Operations Research, 2000, vol 25, 400-408. {[MR] 2002 g :90117.}
  22. M.S.Gowda and G. Ravindran, Algebraic univalence theorems for nonsmooth functions, Journal of Mathematical Analysis and Applications, 2000, vol 252 917-935. {[MR] 2002 c : 26018.}
  23. Y. Song, M.S. Gowda and G. Ravindran, Some properties of P-matrix sets, Linear Algebra and its Applications, 1999, vol 290, 273-246. {[MR] 2000 a : 15044.}
  24. T. Parthasarathy, G. Ravindran, and M. Sabatini) Completely Mixed Games and Real Jacobian Conjecture. Game Theoretical Applications to Economics and OR, 1997, Pp17-23. {[MR] 2001 f :91003.}
  25. U.H. Acharya and G. Ravindran, Applications of Queueing Theory to Libraries and Information Centres. The DRTC work shop on Information Management, 6-8, January 1999.
  26. A.R. Chowdhury and G.Ravindran Study on Relative contribution of element parameters on pump performance, International Conference on OR and Game theory, Chennai, January- 2000.
  27. Nagarajan, K. and Parthasarathy, T. and G. Ravindran, New classes of Two player and Multiplayer stochastic games with order field property, paper presented at the Brazilian workshop of Game theory in honor of J.Nash on the occasion of the 60th anniversary of Nash equilibrium , Sao Polo, Brazil, July-August 2010.
  28. G.Ravindran, Completely mixed games, Jacobian Matrix and Univalence, Journal of Orissa Math. Soc. Vol 4 , 1985 129-140. [Math.Reviews [MR] 89e:90233].
  29. T. Parthasarathy and G. Ravindran, The Jacobian matrix, Global Univalence and Completely mixed games, Mathematics of Operations Research 1986, vol 11 663-671.. [MR 87k: 90299]
  30. T. Parthasarathy and G. Ravindran Completely Mixed Games and Global Univalence in convex regions. Proceedings of the symposium on Optimization, Design of experiments and graph theory, IIT, Bombay (1986) 417-423. [MR 90f: 90180].
  31. G. Ravindran and T. Radzik On Two counter-examples in two-person non-cooperative games without Nash equilibrium, Sankhya, ser. A, vol 51, 1989, 236-240. [MR 91m: 90195]
  32. C. Olech T. Parthasarathy and G. Ravindran A class of globally univalent differentiable mappings. Archivum Mathematicum, vol 26, No. 2-3, 1989, 165-172. [MR 93g: 58015]
  33. T. Parthasarathy and G. Ravindran N-matrices, Linear Algebra and its applications, vol 139, 1990, 89-102 [MR 91k: 15040].
  34. C. Olech T. Parthasarathy and G. Ravindran Almost N-matrices and Linear Complementarity, Linear Algebra and its applications, vol 145, 1991, 107-125. [MR 92b: 15015].
  35. A. P. Jurg , G. Ravindran and S. H. Tijs On Games of coordination, in Lecture notes in Economics and Mathematical systems No.389, Springer-Verlag, edited by B. Dutta et al., 225-242. [MR 94g: 90179]
  36. G. Ravindran and K.Szajowski Non-zero sum Game priority as Dynkin's Games. Mathematica Japanica, vol 37, 1992, 401-413. [MR 93f: 9025]
  37. G. S. R. Murty, T. Parthasarathy and G. Ravindran, A Copositive Q-matrix which is not Ro, Mathematical Programming, vol 61, 1993, 131-135. [MR 94h: 90058]
  38. G. S. R. Murty, T. Parthasarathy and G. Ravindran, On Co-Positive Semi-monotone Q-matrices, Mathematical Programming vol 68, 1995, 187-203. [MR 95k: 90106].
  39. Purba Das, T.Parthasarathy and G. Ravindran, On completely Mixed Stochastic Games, 2018, pp 1-17 (communicated for publication).
Books/ Journals edited
  1. International J Game Theory Review- Volume 3, numbers 2 & 3, June-Sep, 2001 G. Ravindran T.Parthasarathy, et al.
  2. Guidebook for Six Sigma Implementation with real time applications - Associate editor.
  3. International J Game Theory review- Special Issue on GTORA; Guest Editors: M.Seetharama Gowda, Nagarajan K, T. Parthasarathy, R. Ramanujam G. Ravindran. Volume: 15, Number: 04 (December 2013)
  4. Guest editor : Annals Of Operations Research special volume on Game theory and optimization. Guest editors : M.S. Gowda, G.Ravindran, K.C. Sivakumar and M.Usha, 2017-2019 (ongoing- will be completed by May 2019).
Ph.D Guidance
  1. Dr Nagarajan, K, Chennai Mathematical Institute. (CMI) Year : 2011 Title: Equilibria in Bimatrix Games and Stochastic Games : Theoretical and Computational Aspects.
  2. Ms Kavitha Bisht , Department of Mathematics, IIT Madras, August 2017. Title : Matrix Positivity Classes: Extensions and Inheritance
Teaching and Training Experience.
  • Taught graduate courses on Analysis, Game Theory and Decisions, Statistical Inference, SQC, Probability, Mathematical Programming, Multivariate Analysis at ISI, Delhi and University of Hyderabad.
  • Taught Multivariate Analysis, Regression Analysis, Game Theory and Mathematical Programming, Microeconomic theory, Optimization at both undergraduate and graduate level students at the Indian Statistical Institute, Bangalore and Statistical Inference –I and II including Large Sample Theory and non-parametrics for M.Stat applications at ISI Chennai.
Academic M. Stat /M.S. (QE)/ B.Math/ M.S. (QMS) Teaching

Name of Degree

Name of the  Course

Year

month

No of hrs

M.S ( QMS) in Bangalore

OR- II

2018

Jan – June

30 hrs

M.S ( QMS) in Bangalore

OR- II

2017

Jan – June

48 hrs

M.S ( QMS) in Bangalore

OR- II

2016

Jan – June

48 hrs

M.S ( QMS)* in Bangalore

OR- II

2015

Jan – June

24

M.Stat

Nonparametrics and Sequential Analysis

2018

Jan-June-2018

*sequential analysis

M.Stat

Optimization

2018

Jan-June 2018

56

M.Stat

Statistical Inference

2017

July-dec 2017

56

M.Stat

Statistical Inference

2016

July- December

56

M.Stat

Statistical inference

2015

July- december

56

M.Stat

Optimization

2015

Jan-June

56

M.Stat

Statistical Inference

2014

July- Dec

56

M.Stat

Optimization

2014

Jan-June

56

M.Stat ( applications)

Stat Inference – II

(along with Professor  Srinivasan , C. U of Kentucky)

2013

Jan- June

12-16 hrs

M.Stat ( applications)*

Stat  Inference I

2012

July- Dec

56

M.Stat ( applications)*

Stat Inference I

2011

July- Dec

56

B.  Math*

Optimization

2007

Jan – April

60

B Math

Optimization

2004

Jan-May

60

 

 

M.Stat

Statistics I  [Basic Statistics and Inference]

 

1996

 

Jul-Nov

 

65

 

 

Statistics IV [Mult ivariate Analysis ]

 

1997

 

Jan-Apr

 

65

 

 

 

Statistics IV

 

1998

 

Jan-Apr

 

65

 

Statistics III [Decision theory]

 

1999

 

Jul - Dec

 

65

M.S. (Quantitative Economics)

Incentive Economics

1998

Jan-April

15 lectures

Research Courses

ISI Faculty

Game Theory

 

15 lectures

 

                       

ISI Faculty

Linear Compleme ntarity Problem

 

20 lectures

Academic Training done outside ISI.
  • Department of Mathematics, UMBC, Baltimore County, U.S.A. 1997. July-August and July- august 2013
    Courses taught : Operations Research
In Plant Training Programmes etc:

Factory         

Dates         

No. of  days (by self)    

hours        

Title (Of lectures/program)

 

Sundram Fastners Ltd @

 

July 8-13, 1996

2

8 hours (prob, Inference and anova

Statistical Methods and DOE  for managers

[coordinator]

Institute for Wood Science and technology@

 

March 1997

2 days (two hrs each day)

4 hours (Statist Inf  and Anova).

Statistical  Methods For Scientists of  Wood Science Technology.

TAFE

 

 

Oct 97

5 days

10 hrs

Statistical Methods and D.O.E. For supervisors/managers.

Asea Brown Boveri

 

Mar 18-Apr 5, 1998

3

10hrs

Lectured on Data analysis and Inference on Normal distribution for Executives.

BHEL (program conducted at ISI)

18th May – 5th Jun , 1998

3 lectures

8 hrs

Pert, Inventory Control and Introd to OR for Executives.

India meters Limited @

Oct 26-Nov 2,1998

6 days+

15 hours

Seven Tools for Operators

Do

Nov 11-20, 1998

6

15

Do

Do

Dec 1-7, 1998

6

15

Do

 

Institute for Wood Science Technology @    21 – day Programme on Statistical Methods and Design of Experiments.

 

 

Dec 21 – Jan 16, 1999

 

9 days

 

27 hrs

 

On Stat Inference, non- parametrics, General Linear Models, Post Anovamethods,sampling, Ratio estimate etc.  Also taught statistical soft wares . for Scientists

[coordinator]

TVS Suzuki

Feb 99 - Jun 99

3 days

9 hours

Probability, reliability etc

Wipro

Oct-2003

2 days

16 hours

Probability, Inference and SPC.

Samsung

April-2004

3 days

24 hours

Probability, Anova, Control Charts etc

Software Industries

Workshop on Software Process Excellence for Blackbelts *

20 days

10

Program was held at ISI. Prepared course material apart from delivering lectures on Queuing and Simulation, Probability Distributions @

for M/S Iran Khodro limited at ISI, Bangalore during

Advanced Six Sigma course for Master Blackbelts

 

20 days

8 hrs

continuous probability distributions and life time distributions used in reliability analysis

Ranbaxy Delhi

Workshop Forecasting

2 days

18 hrs

Exponential smoothing methods, ARIMA models etc

Reuters

Statistical analysis using Minitab

3 days in Dec 2005

27 hrs

Basic Stats, Control charts, Gage R and R, Anova, regression Analysis.

 

do

Do (Jun 2006)

27 hrs

 

Toyota

SPC

3 days Dec 2006

9 hrs

Basic Stats, Process cap analysis

SKF

Seven tools

2 days Nov 2006

8 hrs

Seven tools

Ashok Leyland

Six Sigma training

Two batches of Blackbelts

18 days each

DMAIC

BEML

Six Sigma training

  BB/ GB and awareness program for executives

50 days.

DMAIC



  • @ Coordinator for these programmes.
  • * A course note on Total Quality Management in Tamil was brought out which was very much appreciated by the company.
Articles refereed for
  1. Opsearch.
  2. Sankhya.
  3. Indian Jour. for Pure & Applied. Math.
  4. Journal of Computational and Applied Mathematics.
  5. Journal Of Differential equations and Dynamical systems.
  6. J of scientific and Industrial Research.
Externaly funded project etc Consulting Activities :

(Regularly doing consulting activities at ISI, Bangalore and conducting / participating in training programs in Corporates in SQC and OR and carrying out projects during the last 14 years. Details of which is furnished below. The gross earnings attributable to industrial visits and due to training (six sigma) both in Bangalore and Chennai will be more than 1 crore.)
  • CITI Corp, Bangalore
    Carried out a project for the HRD, Citicorp on Statistical Analysis of Aptitude scores for software engineers using Psychometric Analysis and normal probability plotting. The Project was done during July 1999.
  • Sigma Aldrich Private Limited, Bangalore ( 2000-2002)
    Inventory Analysis for their warehouse in India – For each of the SKU s ( about 3500) efficient inventory control methods were developed using innovative methods and prediction analysis based on Stepwise regression was carried out based on their sales data for about 50 leading sellers [ SKU s]. The company’s inventory costs came down by 20% and the backorder levels also reduced to morethan half its original levels.
  • Britannia Industries , Bangalore.
    Statistical Analysis of salaries of executives within and across the corporate sector was carried out . The project was carried out in about five days spread over three weeks in Feb 2001.
  • Institute of Wood Science and Technology.
    After 30-day program on statistical methodlogies applicable in Wood Industries, the scientists of the IWST were enthusiastic to take live projects . Along with Professor Ashim Roychowdhury, I carried out guidance of about 80 projects for their scientists.
  • Larsen and Toubro pvt limited, Mysore.[ July 2002].
    We carried out projects which includes a variety of departments including transactional analysis, inventory control, scheduling, design etc. Some projects carried out at L and T, Mysore.
    1. Star First pass yield improvement
    2. Sonata Warranty failure reduction
    3. Improve selectra acceptance in the Market by eliminating noise related problems.
    4. Reduction in PCB design errors in all UCB PCBs.
    5. Prodn Scheduling and meeting the targets.
    6. Reduction of lead time for DCF to document release
    7. Track ball/ material availability
    8. Getting defective items faster WRO regions.
  • “Workshop on Software Process Excellence Using Six Sigma for Blackbelts” during July-October, 2004. Was also a Coordinator for the program.This course was conducted on Saturdays for sixteen weeks with participants drawn from various software companies like Samsung, Emsys, HP, Seimens, Logica etc and may enable us to find new avenues for Statistics / optimization applications in software process. There were 17 participants and a fee of Rs 10000/participant was collected by the Institute. This is First program of its kind (in-house) by the SQC and OR Unit.
  • Particpated in training program and delivered lectures on continuous probability distributions and life time distributions used in reliability analysis in the Advanced Six Sigma course for Master Blackbelts conducted for M/S Iran Khodro limited at ISI, Bangalore during January 25- February 13, 2005.
  • Ranbaxy India Limited- Conducted a two-day program on “Timeseries analysis with Exponential smoothing and Arima modeling for Phrmaceutical data” during Dec 16-17, 2004. The program also included an understanding of a software used for their planning for demand.
  • Ashok Leyland, Chennai– has been involved in training Blackbelts Training and consulting on Six Sigma during 2005-2007.
  • Sanmar Engineering - Training and consulting on Six Sigma : As part of this program guided the following Projects and the savings was substantial.
    1. Improving timely receipt of materials from identified major suppliers
    2. Implication of customer order amendment / spec change and cancellation on inventory
    3. Lead time reduction in special painting
    4. Defect elimination in strainer bodies
    5. Reduction of metal losses in high alloy
    6. Reduction of loss due to short pouring
    7. Reduction of surface pitting/ scale formation on stainless steel castings
    8. Reduction of rejection due to mold leak, ceramic inclusions and extrametal
    9. Reduction of failures at Actuator Assembly
    10. Reduction of non-conformance in Swival parts for export
  • General Motors – Carried out Two day training Program on Statistical Methods and reliability for their groups in July 2005.
  • Reuters India Limited – Sample Size selection : carried out a project during October 2005-December 2005. .
  • Reuters India limited – Conducted Two three- day trainining programs on Advanced Statistical methods using software. Dec 2005 and June 2006.
  • Toyota Kirloskar Ltd – Three day Programme On SPC – Dec 2006
  • BEML - Blackbelt program 2006-2007- Blackbelt training and consulting on Six Sigma and guided two projects. Also held GB training program at BEML, Kolar and about 15 two-day training programs for executives/ AGMs of BEML.
  • I have been a regular faculty at all Blackbelt Programs ( 3 batches) and MBB programs ( 4 batches) and taught several modules during the programs at ISI Bangalore.

    Since 2007, I have been regular faculty at the BB/MBB/GB Programs of SQC and OR Unit, ISI Chennai Centre and involved in training at
    • Wheels India Ltd, Padi- 2007-2008- 20 days program –Black Belt training for about 20 participants.
    • Vodafone, Chennai. 2008-2009- 16- days program- BB training for about 10 participants.
  • BB training Programmes participated – 5 –No of days trained 30 days; – number of participants – 75
  • MBB training Programs – 3 – No. of days trained 9 days; – Number of participants-15.
  • GB Programs conducted 5 – No. of days trained – 10; number of participants – 40.
  • B.H.E.L – Two day training program on SPC October 2009.
  • Ashok Leyland – five day program on DOE- April 2010.
  • Sundaram Fasteners- five day program on Statistical methods using software. July 2010.
  • Verizon India limited. Four day advanced training program on Statistical Methods (two batches One in Chennai and one in Hyderabad)- August 2010.
Details of Administration at I.S.I.
( member/convener in selection committee, coordinator for International conferences and workshops, summer/winter school and academic courses of ISI including M.Stat and Ph.D programs) and administrative and academic/administrative responsibilities as Head, ISI Chennai and Coimbatore.

#

Responsibility

Year

1.        

Head, SQC and OR Unit

Nov 2018- present

2.        

JRF selection Committee in QR-OR

2016-2020

3.        

Nodal Coordinator, Chennai, International Passenger Survey jointly organized by ISI and Ministry of tourism. ( principal investigator : Ashis Senguta)

2014-16.

4.        

 In Charge, Students’ academic affairs, Chennai Centre , Indian Statistical Institute.

June 2011– August 2013.

5.        

Head, SQC and OR Unit, Coimbatore (operating from Chennai)

March 2010-2013

6.        

Centre Supervisor, Chennai  ISI entrance exam  for about 7 years.

2012-2018

7.        

Head, SQC and OR unit , Chennai

April 2009- 2012.