Marc Krellenstein – Brief CV

marc dot krellenstein at gmail




Senior Principal Technologist, Amazon (5/16 -present)

Lecturer, Northeastern University (6/13-present)

Consultant/Independent developer in search and text mining (4/15-5/16)

CTO/SVP of Technology Development, Decision Resources Group (3/14-4/15)

Adjunct Faculty, Emmanuel College, Boston (7/94-12/13)

CTO, Relay Technology Management (8/12-11/13) (Acquired by Decision Resources Group)

Independent consultant, search technology and applications (8/11-8/12)

Founder, CEO (8/07-9/08), CTO (8/07-7/11), Lucid Imagination (now LucidWorks)

CTO (10/04-8/07), Elsevier, VP, Search & Discovery Technology (1/02-10/04)

Founding technologist, CTO/SVP, Engineering, Northern Light Technology (1/96-1/02)

Director of Systems Development, Ligature

Software architect, Ziff Desktop Information

VP, R&D, Faxon Research Services

Software architect, Ziff Desktop Information

Director, R&D – Text, Access Technology/CompuServe




M.S. Computer Science, University of WisconsinMadison

M.A., Ph.D. Psychology, Graduate Faculty, New School for Social Research

A.B. Philosophy, Cornell University


Selected publications in computer science


Krellenstein, M. (September, 2009). Full text search engines vs. DBMS. Lucid Imagination. Available at


Krellenstein, M. (April, 2009). Starting a search application. Lucid Imagination. Available at


Krellenstein, M. (2004). Text mining: It's more exciting than it sounds. Library Connect, 2 (2). Available at


Kornai, A., Krellenstein, M., Mulligan, M., Twomey, D., Veress, F., Wysoker, A. (2003). Classifying the Hungarian web. In Copestake, A. and Hajic, J. (Eds.), Proceedings of the European Association for Computational Linguistics 2003 (pp. 203-210). Budapest, Hungary. Available at


Krellenstein, M. (1999). The commercial view: Shipping the digital library V1.0. In Proceedings of the IEEE Forum on Research and Technology Advances in Digital Libraries (pp. 92-93). Los Alamitos, CA: IEEE Computer Society.


Krellenstein, M., Method and Apparatus for Searching a Database of Records, U.S. Patent. 5,924,090, July 13, 1999. Available at


Krellenstein, M. (1987). A reply to "Parallel Computation and the Mind-Body Problem". Cognitive Science, 11, 155-157. Available at or at


Invited presentations in computer science


The future of enterprise search with Solr and Lucene. Department of Defense Intelligence Information Systems (DODIIS) meeting, Detroit, May, 2011. Revised version delivered at Lucene Revolution 2011.


Full text search with open source Lucene. Infonortics Search Engine meeting, Boston, April, 2007.


Content-based recommendations. Society for Scholarly Publishing annual meeting, Arlington, Virginia, June, 2006.


Alternatives to federated search. NFAIS, Philadelphia, July, 2005. Available at .


Next generation search. Karolinska Institute. Stockholm, August, 2004. Available at


Technology for integrated Information access and discovery. 7th International Bielefeld Conference: Thinking Beyond Digital Libraries. Bielefeld, Germany, February, 2004.


Automatic classification at Northern Light. Workshop in Operational Text Classification, SIGIR 2002, Tampere, Finland, August, 2002.


Searching very large data sets. Internet Archive Colloquium 2000, San Francisco, March, 2000.


Trends in the development of digital libraries. United Nations, New York, September, 1999.


The commercial view: Shipping the digital library V1.0. Keynote presentation at IEEE Advances in Digital Libraries Conference, Baltimore, July, 1999.


Selected publications in philosophy/psychology


Krellenstein, M. (2017). Moral nihilism and its implications. Journal of Mind and Behvaior, 38, 75-90. Author preprint available at


Krellenstein, M. (2009). A modern nihilism. Unpublished manuscript available at


Krellenstein, M. (2001) What have we learned from evolutionary psychology? Unpublished manuscript available at or at


Krellenstein, M. (1995). Unsolvable problems, visual imagery and explanatory satisfaction. Journal of Mind and Behavior, 16, 235-254. Author version available at


Krellenstein, M. (1987). A reply to "Parallel Computation and the Mind-Body Problem". Cognitive Science, 11, 155-157. Available at or at