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Imre
Kondor
Permanent
Fellow and between 2002 and 2008 Rector of Collegium Budapest, professor
of physics at Eötvös Loránd University (ELTE), Budapest.
Born in 1943.
Graduated in physics in 1966 at ELTE. Obtained the candidate of sciences
and doctor of physical sciences degree from the Hungarian Academy of Sciences
(HAS) in 1984 and 1988, respectively. From 1969 to 1989 he held various
positions in the Research Group for Theoretical Physics of HAS, and various
visiting positions abroad: at the Institute for Theoretical Physics, Trieste,
Italy (1972-73), at the Institut für Theoretische Physik, Goethe Universität,
Frankfurt, Germany (1981), at the Service de Physique Théorique, Centre
d´Etudes Nucleaires de Saclay, France (1982-83), and at the Theoretical
Physics Department of Victoria University, Manchester, UK (1984-86). Between
1983 and 1998 he kept up a close and continuous collaboration with the
Saclay group.
In 1989 he
became professor of physics at the Institute for Theoretical Physics,
Eötvös University, and between 1998 and 2000 he was head of the Department
of the Physics of Complex Systems at the same university, where presently
he holds the position of full professor.
In 1992 he
founded the Bolyai College, a school of excellence for science students,
where he served as director until 1998. From 1998 he started lecturing
also at the Budapest University of Economic Sciences and Public Administration,
and from 1999 to 2002 he was head of the Market Risk Research Department
of Raiffeisen Bank, Budapest.
From 1977
to 1980 he was the secretary of the Statistical Physics Division of the
Eötvös Physical Society, Budapest, from 1980 to 1990 secretary, from 1990
to 1997 chairman of the Statistical Physics Committee of the Hungarian
Academy of Sciences, and between 1996-99 he served as chairman of the
Higher Education Research Grant Committee. He has been a member of the
International Advisory Board of the Middle-European Cooperation in Statistical
Physics since 1991, and the chairman of the Hungarian Association of Risk
Managers since 2000.
In 1973 he
was awarded the Bródy Prize of the Eötvös Physical Society, in 1989 the
Physics Prize, and in 1992 the Academic Prize of the Hungarian Academy
of Sciences, and in 1999 the Apáczai Csere János Prize of the Ministry
of Education, Budapest.
Research
Intrests
During the
first few years of his research career he worked on condensed Bose systems,
from the early 70´s on static and dynamic critical phenomena. Around 1980
his research interest turned to random systems, in particular to the field
theory of spin glasses. His present research field is the application
of the methods of statistical physics to problems in quantitative finance,
and the theoretical aspects of risk management and of financial regulation.
Selected
Publications
- On the
dynamics of continuous phase transitions (with P. Szépfalusy), Ann.
of Phys. 82, 1 (1974)
- Calculation
of critical exponents to O(1/n )(with T. Temesvári), Phys. Rev. B21,
260 (1980)
- Resummation
of the 1/n expansion through a self-consistent scheme (with T. Temesvári
and L. Herényi), Phys. Rev. B22, 1451 (1980)
- Eigenvalues
of the stability matrix for Parisi solution of the long range spin glass
(with C. De Dominicis), Phys. Rev. B27, 606 (1983)
- On spin
glass fluctuations (with C. De Dominicis), J. de Physique Lett. 45,
L205 (1984)
- On chaos
in spin glasses, J. Phys. A22, L163 (1989)
- Short-range
corrections to the order parameter of the Ising spin glass above the
upper critical dimension (with C. De Dominicis and T. Temesvári), J.
Phys. A24, L301 (1991)
- Beyond
the Sherrington-Kirkpatrick model (with C. De Dominicis and T. Temesvári),
in Spin glasses and random fields, ed. A.P. Young, World Scientific,
Singapore, pp. 119-160, 1998.
- Portfolios
with nonlinear constraints and spin glasses (with A. Gábor), Physica
A274, 222 (1999)
- Spin glasses
in the trading book, Int. J. of Theor. and Appl. Finance, 3, 537 (2000)
- Noisy
covariance matrices and portfolio optimization (with Sz. Pafka) Eur.
Phys. J. B27, 277-280 (2002)
Books
- From phase
transitions to chaos: topics in modern statistical physics, eds. G.
Györgyi, I. Kondor, L. Sasvári and T. Tél, World Scientific, Singapore,
1992
- Advances
in computer simulation, eds. J. Kertész and I. Kondor, Springer Verlag,
Heidelberg, 1997
Publications
- I. Kondor, Sz. Pafka
Evaluating the
RiskMetrics Methodology in Measuring Volatility and Value-at-Risk in
Financial Markets in Physica A299, 305-310 (2001).
- I. Kondor, Sz. Pafka
Noisy Covariance
Matrices and Portfolio Optimization in European Physical
Journal, B27, 277-280 (2002).
- I. Kondor, Sz. Pafka
Noisy Covariance
Matrices and Portfolio Optimization II. in Physica
A319C, 487-494 (2003).
- I. Kondor, Sz. Pafka
Estimated
correlation matrices and porfolio optimization in Physica
A-Statistical Mechanics and its Applications, A343, 623-634 (2004).
- I. Kondor, Sz. Pafka, M. Potters
Exponential
weighting and random-matrix-theory-based filtering of financial
covariance matrices for portfolio optimization arXiv: cond-mat/0402573
(2004).
- I. Kondor, A. Szepessy and T. Ujvarosi
Concave
Risk Measures in International Capital Regulation,
Ch. 4 in G. Szego (ed.): Risk Measures for the 21st Century, Ch. 4.,
pp. 51-59, ed. G, Szego, John Wiley & Sons
(2004).
- I. Kondor, Sz. Pafka, G. Papp, M.A. Nowak
Random
Matrix Filtering in Poftfolio Optimization in Acta Physica Polonica,
B36, 2757-2766 (2005).
- A. Vázquez, J.G. Oliviera, Z. Dezső, K.-I. Goh, I. Kondor, and A.-L.
Barabási: Modeling bursts and heavy tails in human dynamics, Phys.
Rev. E 73 036127 (2006), 19 pages.
- I. Kondor, Sz. Pafka, R. Karádi, and G. Nagy
Estimation
Noise in Portfolio Optimization with Absolute Deviation in Practical
Fruits of Econophysics: Proceedings of the Third Nikkei Econophysics
Symposium, Hideki Takayasu (ed.): Practical Fruits of Econophysics:
Proceedings of the Third Nikkei Econophysics Symposium, Tokyo; Springer,
New York, (2006). ISBN: 4431289143.Tokyo; New York, Springer, 2006.
- I. Kondor, Sz. Pafka and G. Nagy
Noise sensitivity of
portfolio selection under various risk measures,
Journal of Banking and Finance, 31, 1545-1573 (2007).
- S. Ciliberti, I. Kondor, M. Mezard: On
the Feasibility of Portfolio Optimization under Expected Shortfall, Quantitative Finance, 7, 389-396
(2007).
- I. Kondor, Sz. Pafka, R. Karádi and G. Nagy
- I. Varga-Haszonits and I. Kondor: Noise
Sensitivity of Portfolio Selection in Constant Conditional Correlation
GARCH models, Physica
A385, 307-318 (2007).
- I. Kondor and I. Varga-Haszonits: Divergent
estimation error in portfolio optimization and in linear regression, Eur. Phys. J. B 64, 601-605
(2008).
- N. Gulyás and I. Kondor: Portfolio
instability and linear constraints,
submitted to Physica A (2008).
- I. Kondor and I. Varga-Haszonits: Feasibility
of portfolio optimization under coherent risk measures, submitted to Advances in Complex Systems (2009).
- I. Varga-Haszonits and I. Kondor:
The
instability of downside risk measures, J. Stat. Mech./ P12007 (2008).
- S. Still and I. Kondor: Regularizing portfolio optimization, submitted to the New Journal of Physics (2009)
Conference
Talks, Seminars
- I. Kondor: Limits
to Reduction, seminar talk, Collegium Budapest,
March 3, 2004.
- Kondor I.:
Bank és kockázat, Mindentudás Egyeteme, 2004 május 24.
- I. Kondor: Noisy
Portfolios, invited talk, EXYSTENCE Thematic Institute,
Budapest, June 2, 2004.
- I. Kondor: Noisy
Portfolios, contributed talk, SPHINX Econophysics
Workshop, Oxford, 27-29 September, 2004.
- Pafka Sz. és Kondor I.: Pénzügyi
kockázatkezelés: véletlen mátrixok és azon túl, Statisztikus Fizikai Nap, 2005 március 23.
- I. Kondor: Portfolio
selection in a noisy environment, contributed
talk, COST ACTION P10, Physics of Risk, Toledo, Spain, April 23-26,
2005.
- I. Kondor: Noise
sensitivity of portfolio selection under various risk measures, invited talk, Application of Random Matrices to Economy
and Other Complex Systems, Cracow, May 25-28, 2005
- I. Kondor: Noise
sensitivity of portfolio selection under various risk measures, invited
talk, Summer School on Risk Measurement and
Management, Rome, June 9-17, 2005
- I. Kondor: Measurement
noise and portfolios - Application of statistical physics methods
in portfolio selection, seminar talk, Argonne National
Laboratory, Chicago, USA, August 11, 2005.
- I. Kondor: Noise
sensitivity of risk measures, seminar talk, Notre
Dame University, South Bend, Indiana, USA, August 17, 2005.
- I. Kondor: Noise
sensitivity of risk measures, contributed talk at
the Conference
on Quantitative and Mathematical Finance, Rényi Institute,
Budapest, October 20-21, 2005.
- G. Papp, Sz. Pafka, M.A. Nowak, I. Kondor: Cleaning
correlation matrices from random noise, contributed talk at the
Conference
on Quantitative and Mathematical Finance, Rényi Institute,
Budapest, October 20-21,
2005.
- Kondor I.: A
portfolió-választás zajérzékenysége, előadás "A pénzügyi
piacok természete" előadássorozat keretében a Budapesti Értéktőzsdén,
2005 október 27.
- I. Kondor: Critical
phenomena in portfolio selection, contributed
talk, European Conference
on Complex Systems, Paris, November 14-18,
2005.
- I. Kondor: Noise
sensitivity of risk measures, contributed talk,
European Conference on
Complex Systems, Paris, November 14-18, 2005.
- Kondor I.: Kritikus
jelenségek a portfolió-választásban, szemináriumi
előadás az ELTE Komplex Rendszerek Fizikája Tanszékén, 2005 december
13.
- I. Kondor: Portfolio
selection and algorithmic phase transitions - limits to rational
decision making, seminar talk, Collegium Budapest,
February 2, 2006.
- Kondor I.: A
portfolió-választási feladat instabilitása, előadás
az MTA Közgazdaságtudományi Intézetében, 2006 március 2.
- Kondor I.: Portfoliók
és algoritmikus fázisátalakulások, meghívott
előadás az MTA Statisztikus Fizikai Bizottsága és az Eötvös Loránd
Fizikai Társulat Statisztikus Fizikai Szakcsoportja által szervezett
STATFIZ NAP 2006 konferencián,
Bolyai Kollégium, 2006.
- Kondor I.: A
portfolió-választási feladat instabilitása, előadás
a Befektetési Szakértők Magyarországi Egyesületében, T-Com Székház,
Budapest, 2006 május 3.
- I. Kondor: Critical
phenomena in portfolio selection, invited talk,
Workshop on Complex System Science, COST
P10 Physics of Risk and ONCE-CS Coordinated Action, Vilnius, Lithuania,
13-16 May, 2006.
- I. Kondor: Critical
Phenomena in Portfolio Selection, Conference
on Mathematical Modeling, Rényi Institute, November 10, 2006.
- Kondor I.: Statisztikus
fizika és pénzügyek, Ortvay
Kollokvium, ELTE
Fizikai Intézet, 2007 február 22.
- I. Kondor: Combining curiosity driven and applied research, Panel
Discussion on "The ERC: A Contribution to Society and Knowledge-based
Economy" at the European Research Council launch conference "The ERC:
Excellence in Research through Competition", Berlin, 27-28 February
2007.
- I. Kondor: Statistical
physics and finance, seminar at the Fixed
Income Department of Morgan-Stanley, March 1, 2007.
- I. Kondor: Critical
Phenomena in Portfolio Selection, invited talk,
Workshop
on Statistical Physics and Financial Markets , ICTP, Trieste
and EU-NEST project COMPLEXMARKETS, April 20-21, 2007.
- Kondor I.: Statisztikus
fizika és pénzügyek, szemináriumi előadás,
Bolyai
Kollégium, 2007. április 25.
- I. Kondor: Critical
Phenomena in Portfolio Selection, Conference
on "Complex systems: from theory to applications", Skopje,
Macedonia, May 6-9, 2007.
- I. Kondor: Critical
phenomena in portfolio selection, invited talk,
STATPHYS 23, IUPAP, Genova, Italy, July 9-13, 2007.
- I. Kondor: Modelling
complex systems: information deficit and divergent estimation error, Workshop on Complex Systems and Networks, July 15-20,
2007. Sovata, Romania.
- I. Kondor: Remarks on Complexity, Workshop
on Complex Systems and Networks, July 15-20, 2007. Sovata, Romania.
- I. Kondor: Modeling
Complex Systems: Information Deficit and Divergent Estimation Error,
seminar talk, short
version, Santa Fe Institute, Santa Fe, New Mexico,
USA, August 3, 2007.
- I. Kondor: Divergent
Estimation Error in Portfolio Optimization and in Linear Regression, invited talk, COST
10 The Physics of Risk, Palermo,
September 21-23, 2007.
- Kondor I.: Fizika és pénzügyek, A fizika határain, konferencia
a 2007. évi Tudomány Ünnepe alkalmából, ELTE, Fizikai Intézet, 2007.
november 15.
- Kondor I. és Varga-Haszonits I.: A portfólió optimalizáció kivitelezhetősége
koherens kockázati mértékek esetén, 2008. évi Statisztikus
Fizikai Nap, az MTA Statisztikus Fizikai Bizottság és az Eötvös Loránd Fizikai
Társulat Statisztikus Fizikai Szakcsoportja rendezésében, 2008. március
19.
- Kondor I., Gulyás N., Barabási A.-L.: Korrelációk
komplex rendszerekben,
2008. évi Statisztikus Fizikai
Nap, az MTA Statisztikus Fizikai Bizottság
és az Eötvös Loránd Fizikai Társulat Statisztikus Fizikai Szakcsoportja
rendezésében, 2008. március 19.
- I. Kondor: Instability
of Portfolio Optimization under Coherent Risk Measures, contributed talk, International
Conference MAF 2008 - Mathematical and Statistical Methods for Actuarial
Sciences and Finance (third edition).Venice,
Italy, March 26-28, 2008.
- Tehetséggondozás
a felsőoktatásban, talk in the Gábor Dénes Díjazottak
Klubja (Club of Recipients of a Gábor Dénes Award), Budapest, April
22, 2008.
- I. Kondor: Instability
of Portfolio Optimization under Coherent Risk Measures, seminar talk, ICTP, Trieste, June 17, 2008.
- I. Kondor: Instability
of Portfolio Optimization under Coherent Risk Measures, seminar talk, Abaxbank, Milano, June 20, 2008.
- I. Kondor: Correlations
in Complex Systems, contributed talk, International
Workshop on Challenges and Visions in the Social Sciences, ETH Zurich,
August 18-23, 2008.
- I. Kondor: Irreducibility
and Correlations in Complex Systems, invited
talk, 4th
European PhD Complexity School, The Hebrew University, Jerusalem,
September 10-14, 2008.
- I. Kondor: Instability
of Portfolio Optimization under Coherent Risk Measures, invited talk, Large
Databases in Social and Economic Complex System Research, Jerusalem, September 17, 2008.
- I. Kondor: Strong
random correlations in complex systems, invited
talk, ECCS 2008, The
Annual Conference of the European Complex Systems Society, The Hebrew
University, Jerusalem, September 10-14, 2008.
- I. Kondor: Statistical Physics and Complex Systems, invited talk,
EUNICE workshop, Parmenides Foundation, Elba, Italy, September 23-26,
2008.
- I. Kondor: The
Credit Crisis from a Complexity Perspective, invited
talk, OECD Global Science Forum Workshop on Application of Complexity
Science for Public Policy, New Tools for Finding Unanticipated Consequences
and Unrealized Opportunities, Ettore Majorana International Centre
for Scientific Culture, Erice, Sicily, Italy, October 5-7, 2008.
- I. Kondor: A
pénzügyi válság gyökerei (The Roots of the Financial
Crisis), Seminar Talk, Physics of Complex Systems Department, ELTE,
Budapest
Budapest, March 2, 2009.
- I. Kondor and I. Varga-Haszonits: The
instability of downside risk measures, invited talk, 2nd
International Financial Research Forum, Risk Management and Financial Crisis
Paris, March 19-20, 2009.
- I. Kondor and I. Varga-Haszonits: Instability
of Portfolio Optimization under Coherent Risk Measures, poster
presented at the 2nd International Financial Research Forum Risk
Management and Financial Crisis, Paris, March 19-20, 2009.
- I. Kondor and I. Varga-Haszonits: The
Instability of Downside Risk Measures, contributed talk at the Working
Group on Physics of Socio-Economic Systems, Spring
Meeting of the German Physical Society, at the Technical University
of Dresden, March 22-27, 2009.
- I. Kondor: Komplexitás,
válság, szabályozás, Ortvay Kollokvium, ELTE
Fizikai Intézet, Budapest, April 23,
2009.
- I. Kondor: Fingerprints
of Complexity, invited talk at the 2009 EUNICE
Spring School on Complexity and Thought Patterns, Elba, Italy, May
10-17, 2009.
- I. Kondor: The
Instability of Coherent Risk Measures, seminar talk
given at the Ecole Central, Paris, June 4, 2009.
- I. Kondor: Finacial
Regulation: An Attempt to Regulate Complexity,
invited
talk at the International
Workshop on Coping with Crises in Complex Socio-Economic Systems,
ETH Zurich (Switzerland), June 8-12, 2009.
- I. Kondor: The
Roots of the Financial Crisis,
Fellow Seminar given at Collegium Budapest,
June 18, 2009.
- I. Kondor: Aspects
of Complexity, invited talk at the CEU
Summer School on Complex Systems and Social Simulation, Budapest, July 13-24, 2009.
- I. Kondor: Financial Regulation: an attempt to regulate complexity, seminar talk given at the Abdus Salam International Centre for Theoretical Physics, Triest, Italy, August 18, 2009.
- I. Kondor: The instability of downside risk measures - The problem of estimation error in complex systems, contributed talk at the European Conference on Complex Systems ECCS '09, University of Warwick, Coventry, UK, 21-25 September, 2009.
- I. Kondor: Risk measures and estimation error, invited talk at the International Workshop on Financial risk, Market Complexity, and Regulation, Collegium Budapest, October 8-10, 2009.
- I. Kondor: The roots of the financial crisis, invited talk at the Econophysics Colloquium 2009, 13rd Course, International School on Complexity, Centro Ettore Maiorana, Erice, Sicily, 25-31 October, 2009.
- I. Kondor: Market complexity and financial regulation, contribution to the international conference "Beyond the Financial Crisis - Globalization at the Crossroads", European Climate Forum, Berlin, November 5-6, 2009.
- I. Kondor: A pénzügyi válság gyökerei, (Roots of the Financial Crisis), Hungarian-language seminar talk at ELTE Bólyai Kollégium (ELTE Bólyai College, Budapest, December 10, 2009.
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