News Category: ‘People’

Faculty Profile: Edward Wegman

Edward Wegman

Edward Wegman

Bernard J. Dunn Professor

Primary Research: Computational Statistics

Office: 119 Planetary Hall, MSN 6A12 Phone: 703-993-1691

Research Interests

My research interests are broad and wide-ranging. Fundamentally I am a computational statistician with interests in nonparametric inference, data mining and data visualization. Within this general framework, I have specific interests in time series analysis, function and curve estimation including splines, and inference under order restrictions. My interest in data mining includes interest in methods for streaming data and massive data sets. I have been recently pursuing work in social networks and text mining. Specific applications that interest me are modeling acute effects of alcohol use from a public policy perspective, intrusion detection into computer systems, and statistical methods used in climate studies.

Teaching Interests

EDUCATION:

  • Ph.D. 1968 – Dissertation, On Estimating a Unimodal Density under the direction of Professor Tim Robertson
  • M.S. 1967 – Mathematical Statistics
  • B.S. 1965 – Entered the University of Iowa (USA), Department of Statistics with NDEA Fellowship

Recent Publications:

1. Karen Kafadar and Edward J. Wegman, “Visualizing ‘typical’ and ‘exotic’ Internet traffic data,” Computational Statistics and Data Analysis, 50(12), 3721-3743, 2006

2. Yasmin H. Said and Edward J. Wegman, “Geospatial distribution of alcohol-related violence in Northern Virginia,” in COMPSTAT 2006, (Alfredo Rizzi and Maurizio Vichi, eds.), 197-208, 2006

3. Alan H. Dorfman, Janice Lent, Sylvia G. Leaver and Edward Wegman, “On sample survey designs for consumer price indexes,” Survey Methodology, 32(2), 197-216, 2006

4. Yasmin H. Said, Edward J. Wegman, Walid K. Sharabati, John T. Rigsby, “Style of author-coauthor social networks,” Computational Statistics and Data Analysis, 52, 2177-2184, 2007; doi:10.1016/j.csda.2007.07.021

5. Yasmin H. Said and Edward J. Wegman, “Quantitative assessments of alcohol-related outcomes,” Chance, 20(3), 17-25, 2007

6. Edward J. Wegman and Wendy Martinez, “A conversation with Dorothy Gilford,” Statistical Science, 22(2), 291-300, 2007

Invited Talks:

  1. “Band Structure in 3d Metal Compounds,” National Bureau of Tandards, Institute for Materials Research, (November 1971).
  2. “Calculations with the APW Method,” University of Virginia, Charlottesville, Department of Physics, (March 1972).
  3. “Energy Bands and X-Ray Spectra with the APW Method, “Department of Physics Bedford College of the University of London, (June 1972).
  4. “Band Theory of Solids,” 10 lectures, Summer Institute Nuclear Research Center, “Demokritos,” Athens, Greece, (July and August 1972).
  5. “Superconductivity in Transition Metals and Transition Metal Carbides,” International Symposium on Atomic Molecular and Solid State Theory, Sanibel Island, Florida, (January 1974).
  6. “Electron-Phonon Interaction and Superconducting Transition Temperatures from Augmented Plane Wave Calculations,” Naval Research Laboratory, (March 1974).
  7. “Electron-Phonon Interaction and Superconducting Transition Temperatures from Energy Band Structure Calculations,”Jet Propulsion Laboratory, Pasadena,(1974).
  8. “Calculations of Tc in Transition Metals and Transition Metal Compounds,” University of Virginia, Charlottesville, Department of Physics, (Sept 1974).
  9. “Band Structure and Superconductivity in Transition Metals and Transition Metal Carbides,” University of Maryland, Department of Physics, (October 1974).
  10. “Self-Consistent Energy Bands and Superconductivity in PdH,” International Symposium on Atomic Molecular and Solid State Theory, Sanibel Island, FL, (Jan 1975).
  11. “Calculations of the Electron-Phonon Interaction from Band Structure Results,” Virginia Polytechnic Institute and State University, Department of Physics, (October 1975).
  12. “Calculations of the Electron-Phonon Interaction and Superconducting Transition Temperature in Metals and Compounds,” Naval Research Laboratory, Washington, DC, (December 1975).
  13. “Calculations of the Electron-Phonon Interaction and Superconducting Transition Temperature in Metals and Compounds,” 13th Annual Solid State Physics Conference, Manchester, England, (January 1976).
  14. “Calculations of X-Ray Band Spectra,” International Conference on the Physics of X-Ray Spectra, National Bureau of Standards, Gaithersburg, MD., (September 1976).
  15. “Superconductivity in the Pd-H and the Pd-Ag-H Systems,” International Workshop on Phonons, Paris, France, (August 1977).
  16. “Band Structure and Superconductivity in Palladium-Hydride,” Univ. of Maryland, Dept. of Physics, (October 1977).
  17. “Calculations of the Superconducting Properties of Metals and Compounds,” National Science Foundation, Washington, DC, (February 1978).
  18. “Calculations of X-Ray Spectra in A-15 Compounds,” International Symposium on Atomic, Molecular, and Solid State Theory, Daytona, Florida, (March 1978).
  19. “Hydrides,” ONR-NRL Superconducting Materials Symposium, Washington, DC, (September 1978).
  20. “Electron-Phonon Interaction in Complicated Structures,” Oak Ridge National Laboratory, Oak Ridge, TN, (December 1978).
  21. “Electron-Phonon Interaction in Metal Hydrides and A-15 Compounds,” Univ. of Virginia, Dept. of Physics, (December 1978).
  22. “Superconducting Properties of Metal Hydrides and A-15 Compounds,” Univ of Karlsruhe, Karlsruhe, Germany, (March 1979).
  23. “Electron-Phonon Interaction in Metal Hydrides,” 2nd Biennial High Pressure Symposium, Watervliet Arsenal, NY (June 1979).
  24. “Band Theory of Hydrogenated Metals and Semiconductors,” Dept. of Physics, Univ. of Wyoming, (November 1979).
  25. “Theory of Hydrogenated Silicon,” Exxon Laboratories, Linden NJ, (May 1980).
  26. “Theory of Hydrogenated Silicon,” Energy Conversion Devices Inc., Detroit, MI, (June 1980).
  27. “Band Structure of Metal Hydrides,” NATO Advanced Study Institute, Rhodes, Greece, (June 1980).
  28. “Electronic Structure of Si with Vacancies and Hydrogen,” Dept. of Physics University of Bristol, England, (August 1980).
  29. “Electronic Densities of States in -Si: H,” Dept. of Physics, Univ. of Illinois, Urbana, IL, (3 April 1981).
  30. “Electronic Densities of States in -Si:H,” Dept. of Physics, Univ. of Virginia, Charlottesville, VA, (16 April 1981).
  31. “Electronic Structure of Transition-Metal Carbides, Nitrides and Borides,” Joint Fall Mtg. Am. Met. Soc. Louisville, KY, (October 1981).
  32. “Calculations of the Electronic Properties of Hydrogenated Amorphous Silicon,” IBM, Yorktown Hghts., NY, (28 June 1982).
  33. “Electronic Structure of Substoichiometric Titanium-Iron Hydride,” Intern. Symp. on the Properties and Applications of Metal Hydrides II, Toba, Japan, (Jun 1982).
  34. “Electronic Structure of Substoichiometric Carbides and Hydrides,” Alloy Theory and Development Workshop, (8-10 Sept. 1982), Los Alamos National Lab.
  35. “Calculations of the Electronic Properties of Hydrogenated Amorphous Silicon,” Sandia Lab., Albuquerque, NM, (7 Sept. 1982).
  36. “Calculations of the Electronic Structure of Substoichiometric Transition Metal Hydrides,” APS, San Francisco, CA, (20-23 Nov. 1983).
  37. “Applications of Band Theory in Superconductivity,” National Research Council, Athens, Greece, (5 Jan. 1984).
  38. “Application of Band Theory in Amorphous Semiconductors,” University of Crete, Heraklion, Crete, Greece, (18 Feb. 1984).
  39. “Superconducting Properties of Metal Hydrides,” XVII International Conference on Low Temperature Physics, Karlsruhe, Germany, (20 Aug 1984).
  40. “Exploring Possibilities for High Temperature Superconductivity in Transition Metal Nitrides,” Oak Ridge National Lab, Oak Ridge (Nov. 1984).
  41. “Will Disorder Destroy High Temperature Superconductivity in Cubic MoN?,” Univ. of Texas, Arlington, TX, (27 Nov. 1984).
  42. “Superconducting Properties of Metal Hydrides,” D.A. Papaconstantopoulos, Virginia Commonwealth Univ., Richmond, VA, (May 1985).
  43. “Theory of Electronic States in Disordered Alloy Hydrides,” NATO ASI on Hydrogen in Disordered and Amorphous Solids, Rhodes, (Sept 1985).
  44. “Effective-Medium Theory of Alloy Electronic Structure:  LCAO-CPA,” Intern. Workshop on the Electronic Structure of Defects in Metals and Alloys, Argonne, (June 1986).
  45. “Recent Advances in the Theory of the Electronic Structure of Solids,” 2nd Annual Meeting of the Physics of Condensed Matter, Univ. of Ioannina, Greece, (Sep 1986).
  46. “Theory of High Temperature Superconductors,” Workshop on “Electronic Structure and Atomic Dynamic Simulated Annealing,” Brookhaven Lab., (March 1987).
  47. “Theory of the Electronic and Superconducting Properties of La (M)-Cu-O,” APS Meeting, New York, (March 1987).
  48. “Electronic Properties of Transition Metal Carbides and Nitrides,” MRS Meeting, Anaheim, CA, (April 1987).
  49. “New High Temperature Superconductors,” Dept. of Physics, George Mason University, Fairfax, VA, (May 1987).
  50. “High Temperature Superconductivity,” Dept. of Physics, University of Crete, (June 1987).
  51. “High Temperature Superconductivity,” National Hellenic Research Foundation, Athens, (June 1987).
  52. “High Temperature Superconductivity,” University of Patras, Greece, (June 1987).
  53. “Electronic Structure Studies in Metallic Alloys and High Temperature Superconductors,” Laboratoire de Chimie Physique, Universite Pierre et Marie Curie, Paris, France, (Sept. 1987).
  54. “Electronic Structure of Hydrogenated Amorphous Silicon,” Ecole Polytechnique, Paris, France, (Sept. 1987).
  55. “Electronic Structure Studies in Disordered Materials and High Temperature Superconductors,” Louisiana State Univ., Baton Rouge, LA, (February 1988).
  56. “Recent advances in high temperature superconductivity,” Nuclear Research Center Dimokritos, Athens, Greece, (February 1988).
  57. “Theories of High Temperature Superconductors,” 4th Panhellenic Conference on Solid State Physics, Marathon, Greece, (September 1988).
  58. “Electronic Structure of the High Temperature Superconductors,” Laboratory for Studies of the Electronic Properties of Solids, Grenoble, France, (Oct 1988).
  59. “Predictions of Ferromagnetism in HCP Metals,” Laboratory for Studies of the Electronic Properties of Solids, Grenoble, France, (Mar 1989).
  60. “Electronic Structure of Intermetallic Alloys,” Workshop on Computational Methods for the Electronic Structure of Metallic Alloys, University of Kentucky, Lexington, (May 1989).
  61. “What Band Theory Can Tell Us About Metal Hydrides,” Gordon Research Conference on Metal Hydrides, Tilton, NH, (July 1989).
  62. “Computational Theory of High Temperature Superconductors,” Dept. of Physics, Virginia Commonwealth University, Richmond, VA, (October 1989).
  63. “Band Structure Engineering,” George Mason Univ. Fairfax, VA, (Mar 1990).
  64. “Systematic Studies of the Electronic Properties of Transition-Metal Compounds,” Workshop on Computational Methods for the Electronic Structure of Metallic Alloys, Univ. of Kentucky, Lexington, (June 1990).
  65. “Calculations of the Total Energy, Electron-Phonon Interaction and Stoner Parameter in Transition Metal Hydrides,” Int’l. Symp. on Metal Hydrogen Systems; Fundamentals and & Applications, Banff, Alberta, Canada, (1-7 Sep 1990).
  66. “Total Energy Calculations and Other Good Things” Workshop on Computational Methods in the Theory of Alloys, Univ. of Kentucky, Lexington, KY, (June1991).
  67. “Magnetism in Transition Metal Hydrides” University of Crete, Greece, (July 1991).
  68. “Total Energy and Electronic Studies in Aluminides, Hydrides, Carbides, Nitrides and Oxides,” Sandia National Laboratory, Albuquerque, NM, (January 1992).
  69. “First Principles Quantum Mechanics for Real Systems,” George Mason University, (January 1992).
  70. “Calculations of Electronic and Mechanical Properties of Solids from First Principles,” Universite Pierre et Marie Curie, Paris, France, (February 1992).
  71. “Total Energy and Electronic Structure Studies of Metal-Hydrogen Systems,” March APS Meeting, Indianapolis, IN, (March 1992).
  72. “First Principles Calculation of Elastic Constants” NATO Advanced Institute on Statics and Dynamics of Alloy Phase Transformations, Rhodes, (June 1992).
  73. “Electronic Structure of Solids,” University of Crete, Heraklion, (July 1992).
  74. “Electronic Structure of Solids,” National Hellenic Research Foundation, Athens, (July 1992).
  75. “Electronic Structure of Nitrides,” Gordon Conference Solid State Chemistry, Plymouth, NH, (July 1992).
  76. “Towards Calculations of the Total Energy of Very Large Systems, 6th Annual Workshop on Comp. Methods for the Structure of Alloys, Lexington, KY, (June 1993).
  77. “Calculations of Elastic Constants and Phonon Spectra,” NATO Advanced Study Institute on Nanophase Materials, Corfu, Greece, (June 1993).
  78. “Towards Calculations of the Total Energy of Large Systems,” NATO Advanced Research Workshop, Metallic Alloys: Experimental and Theoretical Perspectives, Boca Raton, FL, (July 1993).
  79. “A New Tight-Binding Total Energy Method for Transition and Noble Metals,” Ames Lab., Iowa State Univ., Ames, IA, (April 1994).
  80. “A New Tight-Binding Total Energy Method for Transition and Noble Metals,” Workshop on computational methods for the Structure & Dynamics of Solids, Lexington, KY, (May 1994).
  81. “Tight-Binding Total Energy Calculations for Metals,” George Mason University, Fairfax, VA, (November 1994).
  82. “Tight-Binding Total Energy Calculations for Metals,” Virginia Polytechnic Inst. and State Univ., Blacksburg, VA, (November 1994).
  83. “Tight-Binding Total Energy Calculations for Metals,” 1995 TMS Meeting “Hume-Rothery Award Symposium,” Las Vegas, NV, (February 1995).
  84. “Tight-Binding Total Energy Calculations for Metals,” Workshop on Electronic Structure Theory, Univ. of Calif. Davis, Davis, CA, (Mar 1995).
  85. “New Methodology for Total Energy Calculations,” NATO ASI on “Stability of Materials,” Corfu, Greece, (July 1995).
  86. “New Developments in Tight Binding Calculations,” Demokritos Research Center, Athens, Greece, (July 1995).
  87. “New Development in Tight-Binding Technology for Calculating Total Energies of Solids,” European Phys. Soc. 15th Gen. Conf. Of Condensed Matter Div., Lago Maggiore, Italy, (April 1996).
  88. “New Developments in Tight-Binding for Calculating Total Energies,” Pierre et Marie Curie University, Paris, France, (April 1996).
  89. “New Developments in Tight-Binding for Calculating Total Energies,” University of Paris (Orsay), (April 1996).
  90. “New Developments on Tight-Binding Calculations,” LEPES-CNRS, Grenoble, France, (May 1996).
  91. “Tight-Binding Interpolation,” IRMA, Lausanne, Switzerland, (May 1996).
  92. “Tight-Binding Interpolation,” Max Planck Institute, Stuttgart, Germany, (May 1996).
  93. “A New Tight-Binding Methodology for Calculating Total Energies,” Oxford, England, (May 1996).
  94. “Tight-Binding Interpolation,” CECAM Workshop, Lyon, France, (June 1996).
  95. “Tight-Binding Technology for Calculating Total Energies of Solids,” First Intnl. Alloy Conference, Athens, Greece, (June 1996).
  96. “New Calculation Methodology of the Total Energy of Solids,” XII Greek Solid State Physics Conference, Heraklion, Crete, Greece, (September 1996).
  97. “The Tight-Binding Method as a Tool for Materials Design,” Intnl. Symp. On Novel Materials, Puri, India, (March 1997).
  98. “Tight-Binding Total Energy Calculations,” Workshop on Interatomic Potentials and Linking Scales, Univ. Of California, Santa Barbara, CA, (June 1997).
  99. “A Tight-Binding Scheme Applicable to Surfaces,” Euroconference Corfu 97, Corfu, Greece, (June 1997).
  100. “Tight-Binding Molecular Dynamics,” CHSSI CCM Workshop, Dayton, OH, (August1997).
  101. “A New Computational Methodology for Calculating Total Energies in Solids” Univ. Of Delaware, Newark, DE, September 1997.
  102. “Tight-Binding Interpolation of First-Principles Total Energies,” MRS Fall Meeting, Boston, MA, (December 1997).
  103. “The NRL Tight-Binding Method, UC Davis Workshop on Materials Theory,” Univ. of Calif., Davis, (March 1998).
  104. “First-Principles Calculations in Materials Science,” TTCP MAT Meeting, DERA, Farnborough, England, (April 1998).
  105. “Tight-Binding Interpolation of First-Principles Total Energies,” Physics Dept., Imperial College, London, UK, (April 1998).
  106. “The NRL Tight-Binding Method Applied to Semiconductors,” Intl. Conference on Correlation Effects and Materials, Heraklion, Crete, Greece, (June 1998).
  107. “The NRL Tight-Binding Method,” Intl. Workshop on Massively Parallel and Superscalar Applications in Computational Materials Science, Paderborn, Germany, (August 1998).
  108. “Recent advances in computational materials science,” George Mason Univ (Nov 1998).
  109. “Tight-binding interpolation of first-principles total energies,” Saclay Nuclear Research Center, Paris, France, (February 1999).
  110. “Materials Science using elaborate tight-binding Hamiltonians,” Pierre et Marie Curie University, Paris France, (January 1999).
  111. “The NRL Tight-Binding Method,” Workshop on Probing Potential Energy Surfaces, Zermatt, Switzerland, (April 1999).

116.”Tight-binding method for metals, insulators, and semiconductors” 2nd International Alloy conference, Davos, Switzerland (August 1999).

117.”Tight-binding Hamiltonians in Solids,” Mardi Gras 2000 Materials Design: Experimental and Computational Challenges, Baton Rouge (March 2000).

  1. “Tight-binding Schemes for Semiconductors and Metals,” Symposium on Wave Propagation and Electronic Structure in Disorder Systems, Heraklion Crete (June 2000).
  2. “Tight-binding Method: Connections to First Principles and to Molecular Dynamics,” 1st Intern. Confer. on Multiscale Materials Phenomena, Limassol, Cyprus, (June 2000).

120.”Computational Materials Science from First Principles,” National Research Council, Washington DC (March 2001).

  1. “Computational Materials Science from First Principles,” DOD Computational Materials Science Workshop, St. Louis, (April 2001).

122.”The NRLTB Method; The Road to Large Scale Electronic Structure and Total Energy Calculations,” Dept. of Physics Harvard University, (May 2001).

123.”Computational Materials Science,” Laboratory of Physical Chemistry, Pierre et Marie Curie University, Paris, France, (June 2001).

124.”A Tight-Binding Approach Exceeding the Limits of First Principles Calculations,” CECAM Workshop on Rigidity and Strain Fields in Crystalline and Amorphous Materials, Lyon, France, (June 2001).

125.”The NRLTB Method; The Road to Large Scale Electronic Structure and Total Energy Calculations,” Grenoble, France, (June 2001).

126.”Extensions of the NRLTB Scheme to Magnetic Materials and Binary Systems,” CECAM Workshop on Multiscale Modeling of Materials, Crete, Greece, (July 2001).

127.”The NRLTB Method; The Road to Large Scale Electronic Structure and Total Energy Calculations,” National Hellenic Research Foundation, Athens, Greece, (July 2001).

128.”The NRLTB Method; The Road to Large Scale Electronic Structure and Total Energy Calculations,” VII International Conference on Advanced Materials ICAM 2001, Cancun, Mexico, (August 2001).

129.”Linking APW Calculations to Tight-Binding,” Workshop on NanoAl, Corfu, Greece, (September 2002).

  1. “Tight-binding v. LDA+U in FeAl and MnAl,” Realistic Theories of CEM, Santa Barbara, (November 2002).
  2. “The NRLTB Method; Applications to Binary and Ternary Systems,” Calphad XXXII, La Malbaie, Quebec, Canada, (May 2003).
  3. “Improvements to Harrison’s Tight-binding Theory,” XII  International Materials Research Congress, Cancun, Mexico, (August 2003).
  4. “Tight-binding Simulations of the Various Polytypes of SiC,” NN2003, International Conference on Nanomaterials and Nanotechnologies, Crete, Greece, (September 2003).
  5. “Tight-binding Methodologies for Efficient Electronic Structure and Total Energy Evaluations,” 2003 Computational Chemistry Conference on Software Solutions to Large Scale Problems in Computational Chemistry, University of Kentucky, Oct 2021, 2003.

135.”Tight-binding Methodologies for Efficient Electronic Structure and Total Energy Calculations,” Workshop on Hierarchical Modeling and Multiscale Simulation of Materials Interfaces, University of Maryland, Oct 2731, 2003.

136.”Transformation of Harrison’s Tight-binding Theory from a Qualitative Approach to a Quantitative Tool,” MRS Meeting, Boston, (December 2003).

137.”Recent Applications of the NRLTB Method,” 44th Sanibel Symposium, St. Augustine, Fl, (February 2004).

  1. “Realistic Tight-binding Methodologies,” Fourth International Alloy Conference (IAC4), Kos, Greece, (June 2005).

139.”Large-Scale Calculations with a Tight-Binding Approach,” XIV, International Materials Research Congress, Cancun, Mexico, (August 2005).

140.”An Introduction to Electronic Structure Methods,” 1st Euroschool in Materials Science, (22 May 2006), Ljubljana, Slovenia.

141.”Tight-binding Methodologies in Electronic Structure,” 1st Euroschool in Materials Science, (23 May 2006), Ljubljana, Slovenia.

142.”Theoretical Predictions of Superconductivity in Alkali and Other Simple Metals,” The 8th International Conference on Materials and Mechanisms of Superconductivity (M2S-HTSC VIII), (9-14 July 2006), Dresden, Germany.

143.”Effects of Pressure on Superconductivity in Monatomic Metals,” Workshop on Ab-initio Approaches to Electron-Phonon Coupling and Superconductivity, San- Sebastian, Spain, (May 2007).

144.”Realistic Tight-Binding Methodologies,” International Symposium on Metastable and Nano Materials, Corfu, Greece, (August 2007).

145.”Realistic Tight-Binding Methodologies,” NIST, (September 2007).

146.“The NRL Tight-binding Method,” International Conference on Computational Materials Science, Cocoyoc, Mexico, (February 2008).

147.”First-principles, Tight-binding, and Embedded-atom Calculations in the Pd-H System,” XVII International Materials Research Congress,” Cancun, (August 2008).

  1. “Tight-binding Hamiltonians for Fe-based Pnictides and Other Systems,” Virginia Commonwealth University, (April 2010).
  2. “Tight-binding Hamiltonians from Solids to Molecules”, Conference on Wave Propagation, Crete, Jun 2011.
  3. “Quantum Mechanics Exploration of Graphene-like Systems to Model Magnetic Resonators”, AVS 58th Intern. Symposium, Nashville, TN Nov 2011.
  4. “Tight-binding Method Applied to Magnetic Systems”, 4th Workshop on Current Trends in Molecular and Nanoscale Magnetism, Ouranoupolis, Greece, Jun 2012.
  5. “Electron-Phonon Coupling in Pnictides”, Workshop on Novel Materials, Univ. Cal Davis Jun 2012.
  6. “Applications of the Gaspari-Gyorffy Theory”, Conference on Superconductivity, Magnetism, and Electron Correlations, Bristol, England, Jul 2014.
  7. “High Temperature Superconductivity at High Pressures for H3SixP(1-x), H3PxS(1-x) and H3ClxS(1-x), International Workshop: Towards Room Temperature Superconductivity: Hydrides and More, Rome, Italy, May 2016.

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