Carlos M. Agra Coelho

• Ph.D. in Biostatistics by the  University of Michigan , Ann Arbor, MI, U.S.A., in May 1992.

• Associate Professor (with 'Agregation'/Habilitation) at the Mathematics Department of Universidade Nova de Lisboa.

• Member of the FAA (Fulbright Alumni Association - Portuguese branch) and co-founder member of  AB-FLAD (Alumni Association of the Luso-American Foundation for Development). Member of the  AMS  (American Mathematical Society), ISA (Indian Statistical Association), OE (Portuguese Board of Engineers), SPM (Portuguese Mathematical Society) and SPE (Portuguese Statistical Society). 

• Member of the Editorial Board of the  American Journal of Mathematical and Management Sciences (since Jan. '05)

• Member of the Editorial Board of  Discussiones Mathematicae - Probability and Statistics (since Jan. '07)

• Associate Editor of the  Journal of Interdisciplinary Mathematics (since Jan. '05)

• Associate Editor of the  Journal of Statistical Theory and Practice (since Jan. '07)

Publications in Mathematical Statistics:

• Coelho, C. A., Mexia, J. T. (2007) On the distribution of the product and ratio of independent generalized Gamma-ratio random variables. Sankhyã (in print)

• Marques, F. J., Coelho, C. A. (2007) Near-exact distributions for the sphericity likelihood ratio test statistic. J. of Statistical Theory and Practice (in print)

• Coelho, C. A. (2007) The wrapped Gamma distribution and wrapped sums and linear combinations of independent Gamma and Laplace distributions. J. of Statistical Theory and Practice, 1, 1-29.

• Coelho, C. A. (2007) The exact and near-exact distributions of the product of independent Beta random variables whose second parameter is rational. J. of Combinatorics, Information & System Sciences, 31, 21-44.

• Alberto, R. P., Coelho, C. A. (2007) Study of the quality of several asymptotic and near-exact approximations based on moments for the distribution of the Wilks Lambda statistic. J. of Statistical Planning and Inference, 137, 1612-1626. [Zbl 1110.62021] [MR2303779]

• Grilo, L. M., Coelho, C. A. (2007) Development and comparative study of two near-exact approximations to the distribution of the product of an odd number of independent Beta random variables. J. of Statistical Planning and Inference, 137, 1560-1575. [Zbl 1110.62020] [MR2303776]

• Coelho, C. A. (2006) The joint characterization of discrete and continuous 'waiting times' through their reciprocal relationships. J. of Interdisciplinary Mathematics, 9, 297-318. [Zbl pre05187067]

• Coelho, C. A., Alberto, R. P., Grilo, L. M. (2006) A mixture of Generalized Integer Gamma distributions as the exact distribution of the product of an odd number of independent Beta random variables: applications. J. of Interdisciplinary Mathematics, 9, 229-248. [Zbl pre05187063] [MR2245158]

• Coelho, C. A. (2004) The generalized near-integer Gamma distribution: a basis for `near-exact' approximations to the distribution of statistics which are the product of an odd number of independent Beta random variables. J. Multivariate Anal. 89, 2, 191-218. [Zbl 1047.62014] [MR2063631 with brief review]

• Coelho, C. A. (2003) A generalized integer gamma distribution as an asymptotic replacement for a logbeta distribution & applications. Amer. J. Math. Management Sci. 23, 3-4, 383--399 [ MR2045533 with brief review]

• Coelho, C. A. (2000) On two asymptotic Normal distributions for the Generalized Wilks Lambda Statistic. Comm. Statist. - Theory and Methods, 29, 7, 1465-1486. [Zbl 1018.62041] [MR1793300 with summary]

• Coelho, C. A. (1999) Addendum to the paper "The Generalized Integer Gamma Distribution - A Basis for Distributions in Multivariate Statistics". J. Multivariate Anal. , 69, 281-285. [Zbl 0937.62054] [ MR1703376 with summary]

• Coelho, C. A. (1998) The Generalized Integer Gamma Distribution - A Basis for Distributions in Multivariate Statistics.  J. Multivariate Anal. , 64, 86-102. [Zbl 0893.62046] [MR1619986 with summary]

(in this paper the distribution of the sum of independent Gamma random variables with integer shape parameters is explicitly obtained, and as particular cases the distribution of the product of particular independent Beta random variables and also the exact distribution of the generalized Wilks' Lambda statistic. By clicking on the Journal's name you will access the Journal's main page and from there if you have a username and a password for IDEAL you will be able to access the paper's abstract.)
 
• Coelho, C. A. (1994) Brief note on the approximate distribution of the dispersion matrix of a weighted sample from a p-variate normal distribution. J. Indian Stat. Assoc., 32, 77-81. [MR1333121]

• Coelho, C. A. (1992) Generalized Canonical Analysis. Ph.D. Thesis. The Univ. of Michigan, Ann Arbor, MI, U.S.A.

• Agra-Coelho, Carlos (1987). (Applications of the) Singular Value Decomposition of a matrix in factorial data analysis methods. (Portuguese) Proceedings of the XIIth Portuguese-Spanish Conference on Mathematics, Vol. II (Braga, 1987), 43-49, Univ. Minho, Braga. [MR1139130] (the above title does not coincide with the title in MR since the translation into English of the original title, in MR, is not completely correct)

• Silva, Joaquim; Mexia, João; Coelho, Carlos A.; Lopes, Gabriel. (2004) A statistical approach for multilingual document clustering and topic extraction from clusters. Pliska Stud. Math. Bulgar. 16 (2004), 207--228 [MR2070316]

• Joaquim Ferreira da Silva, João Mexia, Carlos Agra Coelho, José Gabriel Pereira Lopes (2001) Document Clustering and Cluster Topic Extraction in Multilingual Corpora. ICDM 2001: 513-520. (DBLP Bibliography Database in Computer Science)

• Silva, Joaquim; Mexia, Joao; Coelho, Carlos A.; Lopes, Gabriel (2001) Multilingual document clustering, topic extraction and data transformations. Brazdil, Pavel (ed.) et al., Progress in artificial intelligence. Knowledge extraction, multi-agent systems, logic programming, and constraint solving. 10th Portuguese conference, EPIA 2001, Porto, Portugal, December 17-20, 2001. Proceedings. Berlin: Springer. Lect. Notes Comput. Sci. 2258, 74-87. (MSC 2000: *68T05 68T50) [Zbl 1053.68641] (DBLP Bibliography Database in Computer Science)

• Marques, Nuno Miguel Cavalheiro, Lopes, José Gabriel P. & Coelho, Carlos Agra (2000)  Mining Subcategorization Information by Using Multiple Feature Loglinear Models. In Paola Monachesi (ed.) Computational Linguistics in the Netherlands 1999: selected papers from the Tenth CLIN Meeting. Amsterdam-Atlanta, GA 2000: Rodopi. (http://www-uilots.let.uu.nl/publications/clin1999/papers.html)

• Marques, N. C., Gabriel, J. e Coelho, C. A. (1998) Learning Verbal Transitivity using Log-linear Models. in Machine Learning. Proc. 10th Europ. Conf. on Machine Learning ECML '98, 19-24. Lecture Notes in Artificial Inteligence 1398. Springer. (DBLP Bibliography Database in Computer Science)

• Marques, N. C., Gabriel, J. e Coelho, C. A. (1998) Using Loglinear Clustering for Subcategorization Identification. in Principles of Data Mining and Knowledge Discovery. Proc. 2nd Europ. Symposium PKDD'98, 379-387. Lecture Notes in Artificial Inteligence 1510. Springer. (DBLP Bibliography Database in Computer Science)

Carlos A. Coelho
Mathematics Department
Universidade Nova de Lisboa
Faculdade de Ciências e Tecnologia
Monte de Caparica
2829-516 Caparica
Portugal

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