AREAS OF INTEREST



My LinkedIn Profile: http://www.linkedin.com/in/stefanniculescu


JOURNAL PAPERS


  1. "Modeling fMRI Data Generated by Overlapping Cognitive Processes with Unknown Onsets using Hidden Process Models" (with Rebecca Hutchinson, Timothy Keller, Indrayana Rustandi and Tom Mitchell), NeuroImage 2009 (to appear). pdf version

  2. "Bayesian Network Learning with Parameter Constraints" (with Tom Mitchell and Bharat Rao), Journal of Machine Learning Research 7(Jul):1357-1383, 2006. pdf version

  3. "Data Mining for Improved Cardiac Care" (with Bharat Rao and Sriram Krishnan), SIGKDD Explorations 8(1):3-10, 2006. pdf version

  4. "Solitaire Army and Related Games" (with Florentina Rodica Niculescu), Mathematical Reports 8(58), 2(2006):197-217. pdf version

  5. "Undirected Extensions of P-Graphs" (in Romanian, with Florentina Rodica Niculescu), Spiru Haret Mathematical Reports 2(2006):89-107. pdf version

  6. "Learning to Decode Cognitive States from Brain Images" (with Tom Mitchell, Rebecca Hutchinson, Marcel Just, Sharlene Newman, Francisco Pereira, Xuerui Wang), Machine Learning Journal 57, 1-2(2004):145-175. pdf version

  7. "Some results on the Collatz problem" (with Manfred Kudlek and Stefan Andrei), Acta Informatica 37(2000):145-160. pdf version

  8. "A problem of minimum in Graph Theory" (with Marius Florin Niculescu), Mathematical Reports, Vol. 2(52), 3(2000):337-343. pdf version (no figures)

  9. "On the convergence of a sequence", Mathematical Gazette 2(2000):139-142, Publishing House of the Romanian Society of Mathematical Sciences. pdf version


CONFERENCE PAPERS


  1. "Block-Suffix Shifting: Fast, Simultaneous Medical Concept Set Identification in Large Medical Record Corpora" (with Ying Liu, Lucian Lita, Prasenjit Mitra and Lee Giles), Proceedings of AMIA 2008. pdf version

  2. "Okinet: Automatic Extraction of a Medical Ontology From Wikipedia" (with Vasco Pedro, Lucian Lita, Bharat Rao and Jaime Carbonell), Proceedings of WIKIAI at AAAI 2008. pdf version

  3. "Real-Time Data Pre-Processing Technique for Efficient Feature Extraction in Large Scale Datasets" (with Ying Liu, Lucian Lita, Kun Bai, Prasenjit Mitra and Lee Giles), Proceedings of CIKM 2008. pdf version

  4. "Large Scale Diagnostic Code Classification for Medical Patient Records" (with Lucian Lita, Shipeng Yu and Jinbo Bi), Proceedings of the International Joint Conference on Natural Language Processing (IJCNLP), Hyderabad, India, 2008. pdf version

  5. "Finding a Haystack in Haystacks - Simultaneous Identification of Concepts in Large Bio-Medical Corpora" (with Ying Liu, Lucian Lita, Prasenjit Mitra and Lee Giles), Proceedings of SIAM Data Mining 2008. pdf version

  6. "Federated Ontology Search for the Medical Domain" (with Vasco Pedro, Lucian Lita, Bharat Rao and Jaime Carbonell), Proceedings of OntoContent 2007. pdf version

  7. "Principled Generative-Discriminative Hybrid Hidden Markov Model" (with Oksana Yakhnenko, Lucian Lita and Romer Rosales), NIPS Workshop on Representations and Inference on Probability Distributions, Vancouver, December 2007. pdf version

  8. "Automatic Medical Coding of Patient Records via Weighted Ridge Regression" (with Jianwu Xu, Lucian Lita, Shipeng Yu, Jinbo Bi and Bharat Rao), Proceedings of the International Conference on Machine Learning Applications (ICMLA), 2007. pdf version

  9. "Modeling the fMRI Signal via Hierarchical Clustered Hidden Process Models" (with Tom Mitchell and Bharat Rao), Proceedings of AMIA 2007. pdf version

  10. "A Theoretical Framework for Learning Bayesian Networks with Parameter Inequality Constraints" (with Tom Mitchell and Bharat Rao), Proceedings of the 20th International Joint Conference on Artificial Intelligence (IJCAI), pages 155-160. Hyderabad, India, January 6-12, 2007. pdf version

  11. "Automated fMRI Feature Abstraction using Neural Network Clustering Techniques" (with Tom Mitchell), NIPS workshop on New Directions on Decoding Mental States from fMRI Data, Vancouver, December 2006. pdf version

  12. "Exploiting Parameter Related Domain Knowledge for Learning in Graphical Models" (with Tom Mitchell and Bharat Rao), Proceedings of SIAM Data Mining 2005, pages 310-321. pdf version

  13. "Clinical and Financial Outcomes Analysis with Existing Hospital Patient Records" (with Bharat Rao, Sathyakama Sandilya, Colin Germond, Harsha Rao), Proceedings of KDD 2003. pdf version

  14. "Classifying Instantaneous Cognitive States from fMRI Data" (with Tom Mitchell, Rebecca Hutchinson, Marcel Just, Sharlene Newman, Francisco Pereira, Xuerui Wang), Proceedings of AMIA 2003 (Best Paper Award). pdf version

  15. "Evaluating the C-section Rate of Different Physician Practices: Using Machine Learning to Model Standard Practice" (with Rich Caruana, Bharat Rao, Cynthia Simms), Proceedings of AMIA 2003 (Nominated for Best Paper Award). pdf version

  16. "Machine Learning of fMRI Virtual Sensors of Cognitive States" (with Tom Mitchell, Rebecca Hutchinson, Marcel Just, Sharlene Newman, Francisco Pereira, Xuerui Wang), NIPS workshop on Foundations and Modeling in Neuroimaging, Vancouver, December 2002. pdf version

  17. "Mining Time-dependent Patient Outcomes from Hospital Patient Records" (with Bharat Rao, Sathyakama Sandilya, Colin Germond, Arun Goel), Proceedings of AMIA 2002 (Nominated for Best Paper and Warner Awards). pdf version

  18. "Machine Learning for Sub-Population Assessment: Evaluating the C-section Rate of Different Physician Practices" (with Rich Caruana, Bharat Rao, Cynthia Simms), Proceedings of AMIA 2002 pdf version


OTHER (Theses, Demos, Posters)


  1. "Automated Chart Abstraction Can Provide Highly Accurate Data Extraction For Clinical Quality Measures: Assessment of REMIND for CMS Heart Failure Measures" (with Trish Wilmes, Kim Bohy, Alexis Gilson, Sriram Krishnan, Romer Rosales, Maleeha Qazi, Farbod Rahmanian, William Landi, Bharat Rao), American Heart Association Conference 2006. pdf version

  2. "Mining Medical Records for Computer Aided Diagnosis" (with Bharat Rao, Romer Rosales, Sriram Krishnan, Luca Bogoni, Xiang Zhou, Balaji Krishnapuram), Demo in KDD conference, Philadelphia, PA, 2006. pdf version

  3. "Use of REMIND Artificial Intelligence Software for Rapid Assessment of Adherence to Disease Specific Management Guidelines in Acute Coronary Syndromes" (joint work Siemens and Pittsburgh Veteran Administration Hospital), Poster in AHRQ conference, Washington DC, 2006. ppt version

  4. "Exploiting Parameter Domain Knowledge for Learning in Bayesian Networks" (PhD Dissertation 2005 - Technical Report CMU-CS-05-147). Check my thesis web page!

  5. "What is the Most Efficient Data Extraction Method for Quality Improvement and Research in Cardiology?:A Comparison of REMIND Artificial Intelligence Software vs. Manual Chart Abstraction for Determining ACC/AHA Guideline Adherence in Non-ST Elevation Acute Coronary Syndromes" (joint work Siemens and Pittsburgh Veteran Administration Hospital), Poster in ACC Conference 2005. ppt version

  6. "REMIND: A Bayesian Framework for Reliable Extraction and Meaningful Inference from Non-structured Data" (with Bharat Rao, Sathyakama Sandilya, Colin Germond, Harsha Rao) Siemens CAD Technical Report. pdf version

  7. "Machine Learning for Sub-Population Assessment: Evaluating the C-Section Rate of Different Physician Practices" (with Rich Caruana, Peng Jia, Matt Troup, Rao Bharat and Cynthia Simms), presented as a poster at the International Conference on Machine Learning 2001 (ICML'01). ppt version

  8. "On a Particular Class of Graphs" (in Romanian) - graduation dissertation, University of Bucharest, June 2000 (available only in Romanian).

PATENTS


  1. "Patient Data Mining for Diagnosis and Projections of Patient States" (with Bharat Rao, Sathyakama Sandilya, Arun Goel), Granted in 2007 (filed in 2002).

  2. "System and Method for Large Scale Code Classification for Medical Patient Records" (with Lucian Lita, Jinbo Bi, Shipeng Yu, Bharat Rao), filed in 2008.

  3. "Contextual Searching of Electronic Records and Visual Rule Construction" (with Lucian Lita, Maleeha Qazi, Gilberto Matos), filed in 2008.

  4. "System and Method for Text Tagging and Segmentation Using a Generative/Discriminative Hybrid Hidden Markov Model" (with Oksana Yakhnenko, Lucian Lita, Romer Rosales), filed in 2008.

  5. "System and Method for Creating and Searching Medical Ontologies" (with Vasco Pedro, Lucian Lita, Bharat Rao), filed in 2008.

  6. "Medical Entity Extraction from Patient Data" (with Lucian Lita, Ciprian Raileanu, Bharat Rao), filed in 2008.

  7. "Data De-identification by Obfuscation" (with Romer Rosales, William Landi, Sriram Krishnan, Bharat Rao, Phan Giang), filed in 2008.

  8. "Automated Interpretation and Replacement of Date References in Unstructured Text" (with Romer Rosales, Meliha Yetisgen Yildiz, Bharat Rao, Sriram Krishnan), filed in 2008.

  9. "Quality Metric Extraction and Editing for Medical Data" (with Bharat Rao, Sriram Krishnan, William Landi, Romer Rosales, Farbod Rahmanian, Harald Steck), filed in 2007.

  10. "Systems and Methods for Automated Extraction and Processing of Billing Information in Patient Records" (with Bharat Rao, Sathyakama Sandilya), filed in 2002.

  11. "Patient Data Mining for Automated Compliance" (with Bharat Rao, Sathyakama Sandilya, Thomas Warrick, Harm Scherpbier), filed in 2002.

  12. "Patient Data Mining, Presentation, Exploration, and Verification" (with Bharat Rao, Sathyakama Sandilya, Berenbach Brian, Arun Goel), filed in 2002.

  13. "Patient Data Mining" (with Bharat Rao, Sathyakama Sandilya, Christopher Amies, Arun Goel, Thomas Warrick), filed in 2001.


SLIDES / PRESENTATIONS