April Kontostathis

Associate Professor in Computer Science

Contact Information
 
Office  Pfahler 101J
Email akontostathis@ursinus.edu
Phone Number 610-409-3650

Schedule - Spring 2014
 
CS-174 Data Structures MW 1:30-2:45 Pfahler 107
CS-274 TuTh 1:30-2:45
Lab: Thurs 12:30-1:20
Pfahler 001
CS-471 TuTh 3:00-4:15 Pfahler 001
CS-010 M 4:00-4:50 Pfahler 001

Office Hours - Spring 2013
 
M 10:00-12:00
MW 3:00-4:00
TuTh 11:00-12:00
By Appointment

Blogs

Kelly Reynolds (Math and CS double major, class of 2012) and Friends from International Conference on Machine Learning Applications. There is stuff about the conference in this blog, not just about fun in Hawaii, I swear!! Kelly got to go to this conference because of the cool research she is doing on the ChatCoder Project!

Angela Berardinelli (class of 2010), Math Major, Blog about her experiences as a grad student in mathematics

Justin Garavel (class of 2011), double major CS and Business, Video Blog from his study abroad experience in Japan

Ali Nolan (class of 2011), double major CS and Math, Blog from her study abroad experience in Italy

Jen Bayzick (class of 2011) and India McGhee (class of 2010), also known as Jendia, on a trip to a conference to present a paper in Seville, Spain - Nov 2009

Vacation with extended family - Summer 2008

Background

For more information, check out my C.V., Research Statement and Teaching Statement.

Education
 
2004 PhD in Computer Science  Lehigh University
1986 Master of Arts in Mathematics Duke University
1984 Bachelor of Arts in Mathematics Bloomsburg University

Projects
 
TextMOLE: Text Mining Operations Library and Environment
ChatCoder: Tracking Predators and Bullies via Chat Log Transcripts

Student Honors and Distinguished Honors papers
 
Latent Semantic Indexing with Selective Query Expansion Andy Garron May 2012
Using Machine Learning to Detect Cyberbullying Kelly Reynolds May 2012
Building a 3-D Game in Multiple Environments Sam Snodgrass May 2012
Detecting the Presence of Cyberbullying Using Computer Software Jennifer Bayzick May 2011
SafeChat: Using Open Source Software to Protect Minors from Internet Predation Brett Thom May 2011
Improving Search and Retrieval Performance through Shortening Documents, Detecting Garbage, and Throwing Out Jargon Scott Kulp Dec 2007
The Development of Text-Mining Tools and Algorithms Daniel Waegel May 2006
Experiments in Emerging Trend Detection and First Story Detection Indro De May 2005

Publications

2014

Rink, Matthew, Nathan Labourdette, Andy Santiago, April Kontostathis, and Cathy Chambliss. 2014. TherAPPist: Using Mobile Technology to Aid Therapy. In Proceedings of the 2014 ACM Richard Tapia Celebration of Diversity in Computing. February, 2014. Seattle, WA.

Chambliss, C. & Kontostathis, A. 2014. Using Mobile Technology to Enhance Psychotherapy for Treatment of Schizophrenia: A Feasibility Study. International Journal of Virtual Worlds and Human Computer Interaction. 2(1), 8-17.

2013

Sam Philip Snodgrass and April Kontostathis. 2013. Building a 3D Game in Multiple Environments. The International Journal of Visual Design, Volume 6, Issue 4, pp.45-54.

Kontostathis, April, Kelly Reynolds, Andy Garron, and Lynne Edwards. 2013. Detecting Cyberbullying: Query Terms and Techniques. In Proceedings of the 5th ACM Web Science Conference (WEBSCI2013). Paris, France. May 2013.

2012

Kontostathis, A., W. West, A. Garron, K. Reynolds, and L. Edwards. 2012. Identifying Predators Using ChatCoder 2.0 - Notebook for PAN at CLEF 2012. In Proceedings of CLEF 2012. Rome Italy. September 2012.

Edwards, Lynne and April Kontostathis. 2012. Digital Detecting: New Resources for Determining Internet Authorship. In Proceeding of the 4th ACM Web Science Conference (WEBSCI2012). Evanston, IL. June 2012.

Garron, Andy (class of 2012) and April Kontostathis. 2012. Latent Semantic Indexing with Selective Query Expansion. In proceedings of the Text Mining Workshop 2012. Anaheim, CA. April 2012.

Edwards, Lynne and April Kontostathis. 2012. Reclaiming Privacy: Reconnecting Victims of Cyberbullying and Cyberpredation. In proceedings of the Reconciling Privacy with Social Media Workshop, held in conjunction with the 2012 ACM Conference on Computer Supported Cooperative Work. Seattle, WA. Feb 2012.

Garron, Andy (class of 2012) and April Kontostathis. 2012. Applying Latent Semantic Indexing on the TREC 2011 Legal Dataset. In The Nineteenth Text REtrieval Conference Proceedings. November 2011. Bethesda, MD. http://trec.nist.gov/pubs/trec19/t19.proceedings.html

2011

Reynolds, K, A. Kontostathis and L. Edwards. 2011. Using Machine Learning to Detect Cyberbullying. In Proceedings of the 2011 10th International Conference on Machine Learning and Applications Workshops (ICMLA 2011). December 2011. Honolulu, HI.

Brett Thom, April Kontostathis and Lynne Edwards. SafeChat: Using Open Source Software to Protect Minors from Internet Predation. Poster presentation at WebSci11, June 14-17, 2011, Koblenz Germany.

Jennifer Bayzick, April Kontostathis and Lynne Edwards: Detecting the Presence of Cyberbullying Using Computer Software. Poster presentation at WebSci11, June 14-17, 2011, Koblenz Germany.

McGhee, India, Jennifer Bayzick, April Kontostathis, Lynne Edwards, Alexandra McBride, and Emma Jakubowski. (2011). Learning to Identify Internet Sexual Predation. International Journal on Electronic Commerce. Volume 15, Number 3. Spring 2011

Garron, Andy and April Kontostathis. (2011). Applying Latent Semantic Indexing on the TREC 2010 Legal Dataset. In The Nineteenth Text REtrieval Conference Proceedings. November 2010. Bethesda, MD. http://trec.nist.gov/pubs/trec19/t19.proceedings.html

2010

Kontostathis, April, Erin Moulding and Raymond J. Spiteri. (2010). EDLSI with PSVD Updating. In Proc. Text Mining Workshop 2010 held in conjunction with the Tenth SIAM International Conference on Data Mining (SDM 2010). Columbus, OH. May 2010.

Moulding, Erin, April Kontostathis and Raymond J. Spiteri. (2010). Sparse Matrix Factorization: Applications to Latent Semantic Indexing Proceedings of the Eighteenth Text REtrieval Conference (TREC2009). NIST Special Publication 500-xxx. February 2010.

2009

Kontostathis, April, Andrew Lilly and Raymond J. Spiteri. (2009). Distributed EDLSI, BM25, and Power Norm at TREC 2008. Proceedings of the Seventeenth Text REtrieval Conference (TREC2008). NIST Special Publication 500-277. February 2009.

Kontostathis, April, Lynne Edwards, and Amanda Leatherman. (2009). ChatCoder: Toward the Tracking and Categorization of Internet Predators. In Proc. Text Mining Workshop 2009 held in conjunction with the Ninth SIAM International Conference on Data Mining (SDM 2009). Sparks, NV. May 2009.

D. Yin, Z. Xue, L. Hong, B. D. Davison, A. Kontostathis, and L. Edwards, Detection of Harassment on Web 2.0 in CAW 2.0 09: Proceedings of the 1st Content Analysis in Web 2.0 Workshop, Madrid, Spain, 2009.

Kontostathis, April, Lynne Edwards, and Amanda Leatherman. (2009). Text Mining and Cybercrime In Text Mining: Application and Theory. Michael W. Berry and Jacob Kogan, Eds., John Wiley & Sons, Ltd. 2009.

Kontostathis, April, Lynne Edwards, Jen Bayzick, India McGhee, Amanda Leatherman and Kristina Moore. (2009). Comparison of Rule-based to Human Analysis of Chat Logs. 1st International Workshop on Mining Social Media (MSM09). Seville, Spain. Nov 2009.

2008

Kulp, Scott and April Kontostathis. (2008). On Retrieving Legal Files: Shortening Documents and Weeding Out Garbage. Proceedings of the Sixteenth Text REtrieval Conference (TREC2007). NIST Special Publication 500-274. February 2008.

Kontostathis, April and Scott Kulp. (2008). The Effect of Normalization When Recall Really Matters. Proceedings of the 2008 International Conference on Information and Knowledge Engineering. Las Vegas, NV. July 2008.

2007

Kontostathis, April. (2007). Essential Dimensions of Latent Semantic Indexing (EDLSI). Proceedings of the 40th Annual Hawaii International Conference on System Sciences (CD-ROM). January 2007. Computer Society Press.

2006

Kontostathis, April and William M. Pottenger. (2006). A framework for understanding LSI performance. Information Processing and Management. Volume 42, number 1, pages 56-73.

Waegel, Daniel B, and April Kontostathis. (2006). Using Query History to Prune Query Results. In Proceedings of Text Mining 2006 Workshop held in conjunction with SIAM Data Mining 2006. Bethesda, MD.

Waegel, Daniel B, and April Kontostathis. (2006). TextMOLE: Text Mining Operations Library and Environment. In Proceedings of the 2006 Technical Symposium on Computer Science Education. Houston, TX.
TextMOLE Home Page

2005

Kontostathis, April, William M. Pottenger, and Brian D. Davison. (2005). Identification of critical values in Latent Semantic Indexing (LSI). In T.Y. Lin, S. Ohsuga, C. Liau, X. Hu and S. Tsumoto, editors, Foundations of Data Mining and Knowledge Discovery, pages 333-346. Springer-Verlag.

Indro De (April Kontostathis, Faculty Advisor). (2005) Experiments in First Story Detection. Proceedings of The National Conference On Undergraduate Research (NCUR) 2005.

2004

Holzman, L.E., Fisher, T.A., Galitsky, L. M., Kontostathis, A., and Pottenger, W. M. (2004). A Software Infrastructure for Research in Textual Data Mining. The International Journal on Artificial Intelligence Tools. (Preprint). Volume 14, number 4, pages 829-849.

Kontostathis, April, William M. Pottenger, and Brian D. Davison. (2004). Assessing the impact of sparsification on LSI Performance. Proceedings of the 2004 Grace Hopper Celebration of Women in Computing Conference. Oct 6-9, 2004. Chicago, IL.

Mill, William and April Kontostathis. (2004). Analysis of the values in the LSI term-term matrix . Technical Report.

Kontostathis, A., and Sliner, L. (2004). Use of Visualization to Assist the User with Term Selection for Query Expansion. Technical Report.

Kontostathis, April, Indro De, Lars E. Holzman and William M. Pottenger.  (2004).  Use of Term Clusters for Emerging Trend Detection.  Technical Report.

2003

Kontostathis, April, Leon Galitsky, Soma Roy, William M. Pottenger and Daniel Phelps.  (2003).  An overview of Emerging Trends Detection (ETD) in Textual Data Mining., In A Comprehensive Survey of Text Mining, Michael Berry, Ed., Springer-Verlag. 2003.

Kontostathis, April and William M. Pottenger.  (2003).  A framework for understanding LSI Performance.  Proceedings of ACM SIGIR Workshop on Mathematical/Formal Methods in Information Retrieval-ACMSIGIR MF/IR '03.

Holzman, L., T.A. Fisher, L.M. Galitsky, A. Kontostathis, and W.M. Pottenger. (2003). A Software Infrastructure for Research in Textual Data Mining. Proceedings of the fifteenth annual IEEE International Conference on Tools with Artificial Intelligence. Available on the WWW at http://hddi.cse.lehigh.edu.

2002

Kontostathis, April and William M. Pottenger.  (2002).  Detecting Patterns in the LSI Term-Term Matrix .  IEEE ICDM02 Workshop Proceedings, The Foundation of Data Mining and Knowledge Discovery (FDM02). pp. 243-248. Maebashi, Japan. December 2002.

Personal

Yes, the name is Greek for those who are wondering. My husband was born and raised in Athens, Greece. My maiden name was Edwards! We two sons Kirie and AJ.