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PUBLICATIONS

Books

EHR Book Vagelis Hristidis. Information Discovery on Electronic Health Records. CRC - Taylor & Francis, December 2009 (also co-authored 4 chapters), ISBN: 9781420090383, ISBN 10: 1420090380

Review by the Journal of the American Medical Association (JAMA), Vol. 304 No. 12, September 22/29, 2010
Support Material

 

Conferences/Workshops
  1. Muhammad Shihab Rashid, Jannat Ara Meem, Yue Dong, Vagelis Hristidis. EcoRank: Budget-Constrained Text Re-ranking Using Large Language Models. Findings of the Association for Computational Linguistics (ACL), 2024
  2. Jannat Ara Meem, Muhammad Shihab Rashid, Yue Dong, Vagelis Hristidis. PAT-Questions: A Self-Updating Benchmark for Present-Anchored Temporal Question-Answering. Findings of the Association for Computational Linguistics (ACL), 2024
  3. Muhammad Shihab Rashid, Jannat Ara Meem and Vagelis Hristidis. NORMY: Non-Uniform History Modeling for Open Retrieval Conversational Question Answering. IEEE International Conference on Semantic Computing (ICSC) 2024
  4. Qizhong Mao, Vagelis Hristidis. Increase Merge Efficiency in LSM Trees Through Coordinated Partitioning of Sorted Runs. IEEE International Conference on Big Data in 2023 (short-paper, acceptance rate 38%)
  5. Xin Zhang, Qizhong Mao, Ahmed Eldawy, Vagelis Hristidis and Yihan Sun. Bi-directional Log-Structured Merge Tree. 34th International Conference on Scientific and Statistical Database Management, short paper (SSDBM 2022)
  6. M.H. Maqbool, Luxun Xu, A.B. Siddique, Niloofar Montazeri, Vagelis Hristidis, Hassan Foroosh.  Zero-label Anaphora Resolution for Off-Script User Queries in Goal-Oriented Dialog Systems (draft, dataset). IEEE International Conference on Semantic Computing (ICSC) 2022
  7. Tin Vu, Ahmed Eldawy, Vagelis Hristidis, Vassilis J. Tsotras. Incremental Partitioning for Efficient Spatial Data Analytics. Proceedings of the VLDB Endowment (PVLDB) 2022 (full research paper)
  8. Ahmed Eldawy, Vagelis Hristidis, Saheli Ghosh, Majid Saeedan, Akil Sevim, A.B. Siddique, Samriddhi Singla, Ganesh Sivaram, Tin Vu and Yaming Zhang. Beast: Scalable Exploratory Analytics on Spatio-temporal Data. ACM Conference on Information and Knowledge Management (CIKM) 2021 (full paper, applied track, acceptance rate 24%)
  9. Muhammad Shihab Rashid, Fuad Jamour and Vagelis Hristidis. QuAX: Mining the Web for High-utility FAQ. ACM Conference on Information and Knowledge Management (CIKM) 2021 (full paper, acceptance rate 21.7%)
  10. A.B. Siddique, Fuad Jamour, Luxun Xu, and Vagelis Hristidis. Generalized Zero-shot Intent Detection via Commonsense Knowledge. ACM SIGIR Conference on Research and Development in Information Retrieval 2021, Short Paper track (acceptance rate 27.6%)
  11. A.B. Siddique, Fuad Jamour and Vagelis Hristidis. Linguistically-Enriched and Context-Aware Zero-shot Slot filling. The Web Conference 2021 (acceptance rate 20.6%)
  12. Nhat Le, A.B. Siddique, Fuad Jamour, Samet Oymak and Vagelis Hristidis. Predictable and Adaptive Goal-oriented Dialog Policy Generation. IEEE International Conference on Semantic Computing (ICSC) 2021 (best student paper)
  13. Umar Farooq, A.B. Siddique, Fuad Jamour, Zhijia Zhao, Vagelis Hristidis. App-Aware Response Synthesis for User Reviews. IEEE International Conference on Big Data in 2020 (full-paper, acceptance rate 15.5%)
  14. Qizhong Mao, Mohiuddin Abdul Qader, Vagelis Hristidis. Comprehensive Comparison of LSM Architectures for Spatial Data. IEEE International Conference on Big Data in 2020 (short-paper, acceptance rate 32%)
  15. A.B. Siddique, Samet Oymak, Vagelis Hristidis .Unsupervised Paraphrasing via Deep Reinforcement Learning. ACM SIGKDD (International Conference on Knowledge Discovery and Data Mining) 2020 (full paper, acceptance rate 16.8%)
  16. A.B. Siddique, Ahmed Eldawy, and Vagelis Hristidis. Euler++: An Improved Selectivity Estimation for Rectangular Spatial Records. IEEE Big Spatial Data Workshop (co-located with IEEE International Conference on Big Data) 2019
  17. Qizhong Mao, Steven Jacobs, Waleed Amjad, Vagelis Hristidis, Vassilis J. Tsotras, and Neal E. Young. Experimental Evaluation of Bounded-Depth LSM Merge Policies. IEEE International Conference on Big Data in 2019 (acceptance rate 19%)
  18. Luxun Xu, Vagelis Hristidis and Nhat Le. Clustering-based Summarization of Transactional Chatbot Logs. IEEE Humanized Computing and Communication. Laguna Hills, CA, 2019
  19. Nhat Le, Neal Young and Vagelis Hristidis. Unsupervised Ontology- and Sentiment-aware Review Summarization, International Conference on Web Information Systems Engineering (WISE), 2019 (acceptance rate 24.6%)
  20. Muhammad Abu Bakar Siddique, Ahmed Eldawy, Vagelis Hristidis. Comparing Synopsis Techniques for Approximate Spatial Data Analysis. Proceedings of the VLDB Endowment (PVLDB) 2019 (full research paper)
  21. Moloud Shahbazi, Renee Garett, Vagelis Hristidis, Sean Young. Using Social Media to Explore Mental Health-Related Behaviors and Discussions among Young Adults. Hawaii International Conference on System Sciences 2019, 7 pages
  22. Nhat Le, Ryan Rivas, James Flegal and Vagelis Hristidis. Targeted Solicitation of Product Reviews. 13th IEEE International Conference on Semantic Computing, 2019 (acceptance rate 24.8%)
  23. Mohiuddin Abdul Qader, Shiwen Cheng, Vagelis Hristidis. A Comparative Study of Secondary Indexing Techniques in LSM-based NoSQL Databases. ACM SIGMOD International Conference on Management of Data (SIGMOD), 2018
  24. Mohiuddin Abdul Qader and Vagelis Hristidis. DualDB: An Efficient LSM-based Publish-Subscribe Storage System. International Conference on Scientific and Statistical Database Management (SSDBM) 2017
  25. Pritom Ahmed, Mahbub Hasan, Abhijith Kashyap, Vagelis Hristidis and Vassilis J. Tsotras. Efficient Computation of Top-k Frequent Terms over Spatial-Temporal Ranges. ACM SIGMOD International Conference on Management of Data (SIGMOD), 2017
  26. Shiwen Cheng, Marek Chorbak, Vagelis Hristidis. Slowing the Firehose: Multi-Dimensional Diversity on Social Post Streams. International Conference on Extending Database Technology (EDBT) 2016 (acceptance rate 27%)
  27. Moloud Shahbazi, Joseph R. Barr, Vagelis Hristidis and Nani Narayanan Srinivasan. Estimation of the Investability of Real Estate Properties Through Text Analysis. IEEE International Conference on Semantic Computing (ICSC) 2016 (full paper, acceptance rate 30%)
  28. Azade Nazi, Saravanan Thirumuruganathan, Vagelis Hristidis, Nan Zhang, Khaled Shaban, and Gautam Das. Query Hidden Attributes in Social Networks. Third International Workshop on Intelligent Data Processing (IDP), collocated with ICDM 2014
  29. Anastasios Zouzias, Vagelis Hristidis, Michail Vlachos. Templated Search over Relational Databases. ACM Conference on Information and Knowledge Management (CIKM) 2014 (full paper, acceptance rate 20%)
  30. Mahbub Hasan, Abhijith Kashyap, Vagelis Hristidis, Vassilis Tsotras. User Effort Minimization Through Adaptive Diversification. ACM SIGKDD (International Conference on Knowledge Discovery and Data Mining) 2014 (full paper, acceptance rate 14.6%)
  31. Saravanan Thirumuruganathan, Nan Zhang, Vagelis Hristidis, and Gautam Das, Aggregate Estimation Over a Microblog Platform, ACM SIGMOD International Conference on Management of Data (SIGMOD), 2014
  32. Eduardo Ruiz, Vagelis Hristidis, Panos Ipeirotis. Efficient Filtering on Hidden Document Streams. AAAI Conference on Weblogs and Social Media (ICWSM) 2014 (full paper and long presentation, acceptance rate: 23%, long presentation acceptance rate: 8.8%)
  33. Shiwen Cheng, Anastasios Arvanitis, Marek Chrobak, Vagelis Hristidis. Multi-Query Diversification in Microblogging Posts. International Conference on Extending Database Technology (EDBT) 2014 (full paper, acceptance rate: 20%)
  34. Anastasios Arvanitis, Matthew Wiley, Vagelis Hristidis. Efficient Concept-based Document Ranking. International Conference on Extending Database Technology (EDBT) 2014 (full paper, acceptance rate: 20%)
  35. X. Luo, W. Najjar, and V. Hristidis. Efficient Near-Duplicate Document Detection using FPGAs. Workshop on Benchmarks, Performance Optimization, and Emerging hardware of Big Data Systems and Applications (BPOE), in conjunction with IEEE International Conference on Big Data, 2013
  36. Shiwen Cheng, Vagelis Hristidis, Michael Weiner. Leveraging User Query Sessions to Improve Searching of Medical Literature. American Medical Informatics Association (AMIA) Annual Symposium 2013 [dataset]
  37. Shiwen Cheng, Anastasios Arvanitis, Vagelis Hristidis. How Fresh Do You Want Your Search Results? ACM Conference on Information and Knowledge Management (CIKM) 2013 (full paper, acceptance rate 16.9%) [dataset]
  38. Mahashweta Das, Habibur Rahman, Gautam Das, Vagelis Hristidis. Generating Informative Snippet to Maximize Item Visibility. ACM Conference on Information and Knowledge Management (CIKM) 2013 (short paper, acceptance rate 29.4%)
  39. Eduardo Ruiz, Vagelis Hristidis, Carlos Castillo and Aristides Gionis. Measuring and Summarizing Movement in Microblog Postings. AAAI Conference on Weblogs and Social Media (ICWSM 2013) (acceptance rate 20%)
  40. Michael Butkiewicz, Zhe Wu, Shunan Li, Pavithra Murali, Vagelis Hristidis, Harsha V. Madhyastha, Vyas Sekar. Enabling the Transition to the Mobile Web with WebSieve. ACM HotMobile 2013 (acceptance rate 31%)
  41. Shiwen Cheng, Arash Termehchy, Vagelis Hristidis. Predicting the Effectiveness of Keyword Queries on Databases. ACM Conference on Information and Knowledge Management (CIKM) 2012 (full paper, acceptance rate 13.4%)
  42. Abhijith Kashyap, Vagelis Hristidis. Comprehension-Based Result Snippets. ACM Conference on Information and Knowledge Management (CIKM) 2012 (full paper, acceptance rate 13.4%)
  43. Abhijith Kashyap, Reza Amini, Vagelis Hristidis. SonetRank: Leveraging Social Networks to Personalize Search. ACM Conference on Information and Knowledge Management (CIKM) 2012 (short paper, acceptance rate 27.7%)
  44. Abhijith Kashyap, Vagelis Hristidis. LogRank: Summarizing Social Activity Logs. 15th SIGMOD International Workshop on the Web and Databases (WebDB) 2012
  45. Eduardo J. Ruiz, Vagelis Hristidis, Carlos Castillo, Aristides Gionis, Alejandro Jaimes. Correlating Financial Time Series with Micro-Blogging Activity. ACM International Conference on Web Search and Data Mining (WSDM) 2012, full paper with presentation (acceptance rate 8%, acceptance rate regardless presentation was 20.7%)
  46. Mahashweta Das, Gautam Das, Vagelis Hristidis. Leveraging Collaborative Tagging for Web Item Design. ACM SIGKDD (International Conference on Knowledge Discovery and Data Mining) 2011 (full paper, acceptance rate 7.8%)
  47. Vagelis Hristidis, Louiqa Raschid, Yao Wu. Scalable Link-based Personalization for Ranking in Entity-Relationship Graphs. 14th SIGMOD International Workshop on the Web and Databases (WebDB) 2011 (acceptance rate 27.9%)
  48. Abhijith Kashyap, Vagelis Hristidis, Michalis Petropoulos. FACeTOR: Cost-Driven Exploration of Faceted Query Results. ACM Conference on Information and Knowledge Management (CIKM) 2010 (full paper, acceptance rate 13.4%) [Best Interdisciplinary Paper Award]
  49. Vagelis Hristidis, Eduardo Ruiz, Alejandro Hernández, Fernando Farfán, Ramakrishna Varadarajan. PatentsSearcher: A Novel Portal to Search and Explore Patents. 3rd International Workshop on Patent Information Retrieval, at ACM CIKM 2010
  50. Louiqa Raschid, Vagelis Hristidis, John Edmond, Hassan Sayyadi. Challenges in Personalized Authority Flow Based Ranking of Social Media. ACM Conference on Information and Knowledge Management (CIKM) 2010 (short paper, acceptance rate 17.9%)
  51. Benjamin Arai, Gautam Das, Dimitrios Gunopulos, Vagelis Hristidis, Nick Koudas. An Access Cost-Aware Approach for Object Retrieval over Multiple Sources. Proceedings of the VLDB Endowment (PVLDB) and VLDB Conference 2010.
  52. Li Zheng, Chao Shen, Liang Tang, Tao Li, Steve Luis, Shu-Ching Chen, Vagelis Hristidis. Using Data Mining Techniques to Address Critical Information Exchange Needs in Disaster Affected Public-Private Networks. ACM SIGKDD Conference (Industrial/Government Track ) 2010 (full presentation, acceptance rate 11%)
  53. Vagelis Hristidis, Yuheng Hu, Panagiotis G. Ipeirotis. Ranked Queries over Sources with Boolean Query Interfaces without Ranking Support. IEEE International Conference on Data Engineering (ICDE) 2010, short paper (acceptance rate 20%)
  54. Vagelis Hristidis, Eduardo Ruiz. CADS: A Collaborative Adaptive Data Sharing Platform. VLDB Workshop on Personalized Access, Profile Management, and Context Awareness in Databases (PersDB 2009).
  55. Ariel Cary, Zhengguo Sun, Vagelis Hristidis, Naphtali Rishe. Experiences on Processing Spatial Data with MapReduce. 21st International Conference on Scientific and Statistical Database Management (SSDBM), 2009
  56. Ramakrishna Varadarajan, Vagelis Hristidis, Louiqa Raschid, Maria-Esther Vidal, Luis lbanez and Hector Rodriguez-Drumond: Flexible and Efficient Querying and Ranking on Hyperlinked Data Sources, EDBT 2009 (full paper, acceptance rate 33%)
  57. Medha Bhadkamkar, Jorge Guerra, Luis Useche, Sam Burnett, Jason Liptak, Raju Rangaswami, and Vagelis Hristidis. BORG: Block-reORGanization for Self-Optimizing Storage Systems. USENIX File and Storage Technologies, FAST 2009 (acceptance rate 22%)
  58. Fernando Farfán, Vagelis Hristidis, Anand Ranganathan, and Michael Weiner. XOntoRank: Ontology-Aware Search of Electronic Medical Records. IEEE International Conference on Data Engineering (ICDE) 2009 (long paper, acceptance rate 17%)
  59. Abhijith Kashyap, Vagelis Hristidis, Michalis Petropoulos, and Sotiria Tavoulari. BioNav: Effective Navigation on Query Results of Biomedical Databases. IEEE International Conference on Data Engineering, (ICDE) 2009 (short paper, acceptance rate 27%)
  60. K. Saleem, S. Luis, Y. Deng, S-C. Chen, V. Hristidis, T. Li. Towards a Business Continuity Information Network for Rapid Disaster Recovery. 9th Annual International Conference on Digital Government Research 2008
  61. Muhammed Miah, Gautam Das, Vagelis Hristidis, Heikki Mannila. Standing Out in a Crowd: Selecting Attributes for Maximum Visibility. IEEE International Conference on Data Engineering (ICDE) 2008 (full paper, short presentation, acceptance rate 19%)
  62. Ian De Felipe, Vagelis Hristidis, Naphtali Rishe. Keyword Search on Spatial Databases. IEEE International Conference on Data Engineering (ICDE) 2008 (full paper, long presentation, acceptance rate 12%)
  63. Ramakrishna Varadarajan, Vagelis Hristidis, Louiqa Raschid. Explaining and Reformulating Authority Flow Queries. IEEE International Conference on Data Engineering (ICDE) 2008 (full paper, short presentation, acceptance rate 19%) (extended version)
  64. Vagelis Hristidis, Fernando Farfán, Redmond P. Burke, Anthony F. Rossi, Jeffrey A. White. Information Discovery on Electronic Medical Records. National Science Foundation Symposium on Next Generation of Data Mining and Cyber-Enabled Discovery for Innovation (NGDM) 2007 (acceptance rate 28%)
  65. Fernando Farfán, Vagelis Hristidis, Raju Rangaswami. Beyond Lazy XML Parsing. 18th International Conference on Database and Expert Systems Applications, DEXA 2007 (acceptance rate 32%)
  66. Vagelis Hristidis, Peter J. Clarke, Nagarajan Prabakar, Yi Deng, Jeffrey A. White, Redmond P. Burke. A Flexible Approach for Electronic Medical Records Exchange. International Workshop on Health Information and Knowledge Management (HIKM), in conjunction with ACM CIKM, 2006
  67. Ramakrishna Varadarajan, Vagelis Hristidis: A System for Query-Specific Document Summarization. ACM CIKM 2006 (acceptance rate 15%)
  68. Yi Deng, S. Masoud Sadjadi, Peter Clarke, Chi Zhang, Vagelis Hristidis, Raju Rangaswami, Nagarajan Prabakar. A Communication Virtual Machine. International Computer Software and Applications Conference (COMPSAC) 2006 (acceptance rate 31%)
  69. Gautam Das, Vagelis Hristidis, Nishant Kapoor, S. Sudarshan. Ordering the Attributes of Query Results. ACM SIGMOD 2006 (acceptance rate 13%)
  70. Peter J. Clarke, Vagelis Hristidis, Yingbo Wang, Nagarajan Prabakar and Yi Deng. A Declarative Approach for Specifying User-Centric Communication. Symposium on Collaborative Technologies and Systems (CTS), 2006
  71. Ken Pu, Vagelis Hristidis, Nick Koudas. A Syntactic Rule Based Approach to Web Service Composition. IEEE International Conference on Data Engineering (ICDE) 2006 (acceptance rate 19%)
  72. Andrey Balmin, Vagelis Hristidis, Yannis Papakonstantinou: ObjectRank: Authority-Based Keyword Search in Databases. VLDB 2004 (acceptance rate 16%) (extended version)
  73. Surajit Chaudhuri, Gautam Das, Vagelis Hristidis, Gerhard Weikum: Probabilistic Ranking of Database Query Results. VLDB 2004 (acceptance rate 16%)
  74. Vagelis Hristidis, Luis Gravano, Yannis Papakonstantinou: Efficient IR-Style Keyword Search over Relational Databases. VLDB 2003 (acceptance rate 14%)
  75. Vagelis Hristidis, Yannis Papakonstantinou, Andrey Balmin: Keyword Proximity Search on XML Graphs. IEEE International Conference on Data Engineering (ICDE) 2003 (acceptance rate 13%)  (extended version)
  76. Vagelis Hristidis, Yannis Papakonstantinou: DISCOVER: Keyword Search in Relational Databases. VLDB 2002 (acceptance rate 16%)
  77. Vagelis Hristidis, Michalis Petropoulos: Semantic Caching of XML Databases. WebDB 2002
  78. Vagelis Hristidis, Nick Koudas, Yannis Papakonstantinou: PREFER: A System for the Efficient Execution of Multi-parametric Ranked Queries. ACM SIGMOD 2001 (acceptance rate 15%) 
Journals
  1. Nicole Ruggiano, Ellen Leslie Brown, Peter J Clarke, Vagelis Hristidis, Lisa Roberts, Carmen Victoria Framil Suarez, Sai Chaithra, Shannon Hurley, Chrystine Kopcsik, Jane Daquin, Hamilton Chevez, Raymond Chang-Lau, Marc Agronin, David S Geldmacher. Development of an Evidence-Based Information Technology Program With Chatbot to Support Caregiving and Clinical Care for People With Dementia: The CareHeroes Pilot. JMIR Aging 2024
  2. Deiner MS, Deiner RY, Fathy C, Deiner NA, Hristidis V, McLeod SD, Doan T, Seitzman GD, Lietman TM, Porco TC. Use of large language models and synthetic social media to optimize and validate assessment of epidemiological characteristics in social media posts about outbreaks: Infodemiology Study. Journal of Medical Internet Research (JMIR) 2024
  3. Christina Burns, Angela Bakaj, Amonda Berishaj, Vagelis Hristidis, Pamela Deak, Ozlem Equils. Use of Generative AI for Improving Health Literacy in Reproductive Health: Case Study. JMIR Formative Research 2024
  4. Jannat Ara Meem, Muhammad Shihab Rashid, Vagelis Hristidis. Modeling the Impact of Out-of-schema Questions in Task-Oriented Dialog Systems. Journal of Data Mining and Knowledge Discovery, 2024 (presented at ECML/PKDD conference 2024)
  5. Lawson McLean, A., Wu, Y., Lawson McLean, A.C., Vagelis Hristidis. Large language models as decision aids in neuro-oncology: a review of shared decision-making applications. J Cancer Res Clin Oncol 150, 139 (2024). https://doi.org/10.1007/s00432-024-05673-x
  6. Deiner M, Deiner NA, Hristidis V, McLeod SD, Doan T, Lietman TM, Porco TC. Use of large language models to assess likelihood of epidemics from content of Tweets: Infodemiology Study. Journal of Medical Internet Research (JMIR) 2024
  7. Vagelis Hristidis, Nicole Ruggiano, Ellen L Brown, Sai Rithesh Reddy Ganta, Selena Stewart. ChatGPT vs. Google for Queries Related to Dementia and Other Cognitive Decline: Results Comparison. Journal of Medical Internet Research (JMIR), 2023
  8. Qizhong Mao, Mohiuddin Abdul Qader, Vagelis Hristidis. Comparison of LSM Indexing Techniques for Storing Spatial Data. Springer Journal of Big Data, 2023
  9. Pritom Ahmed, Ahmed Eldawy, Vagelis Hristidis, Vassilis J Tsotras. Reverse Spatial Top-k Keyword Queries. VLDB Journal 2022
  10. Ryan Rivas, Sudipta Paul, Vagelis Hristidis, Evangelos E. Papalexakis, Amit K. Roy-Chowdhury. Task-Agnostic Representation Learning of Multimodal Twitter Data for Downstream Applications. Journal of Big Data volume 9, Article number: 18 (2022) (impact factor 10.835)
  11. Nhat Le, Muhammad Abu Bakar Siddique, Fuad Jamour, Samet Oymak, Vagelis Hristidis. Generating Predictable and Adaptive Dialog Policies in Single- and Multi-domain Goal-oriented Dialog Systems. International Journal of Semantic Computing (IJSC) Vol. 15, No. 04, pp. 419-439 (2021)
  12. Nhat Le, Abdulaziz Almaslukh, Moloud Shahbazi, Vagelis Hristidis. Query by Documents on Top of a Search Interface (preprint). Elsevier Information Systems Journal, Volume 101, November 2021, 2021 (Impact Factor: 2.466)
  13. Ruggiano N, Brown EL, Roberts L, Framil Suarez CV, Luo Y, Hao Z, Hristidis V. Chatbots to Support People with Dementia and Their Caregivers: A Systematic Review of Functions and Quality. Journal of Medical Internet Research (JMIR), Vol 23, No 6 (2021): June 2021
  14. Ryan Rivas, Vagelis Hristidis. Effective Social Post Classifiers on Top of Search Interfaces. (preprint) Data Mining and Knowledge Discovery Journal, 35(3), pp 1809-1829, 2021
  15. Qizhong Mao, Steven Jacobs, Waleed Amjad, Vagelis Hristidis, Vassilis J. Tsotras, Neal E. Young. Comparison and Evaluation of State-of-the-Art LSM Merge Policies. The International Journal on Very Large Data Bases (VLDB Journal, Five year impact factor 3.508), 30, pages 361-378 (2021)
  16. Robert C. Wright, Doerte U. Junghaenel, Ryan Rivas, Vagelis Hristidis, Megan L. Robbins. A New Approach to Capturing Pain Disclosure in Daily Life In-Person and Online. Journal of Health Psychology, Vol 26, Issue 13, 2021 (impact factor 3.789)
  17. Nhat Le, Matthew Wiley, Antonio Loza, Vagelis Hristidis, Robert El-Kareh. Prediction of Medical Concepts in Electronic Health Records: Similar Patient Analysis. JMIR Medical Informatics (JMI), 2020;8(7), doi: 10.2196/16008 (impact factor 3.23)
  18. Ryan Rivas, Moloud Shahbazi, Renee Garett, Vagelis Hristidis, Sean Young. Mental Health-Related Behaviors and Discussions Among Young Adults: Analysis and Classification. Journal of Medical Internet Research (JMIR), 2020;22(5), doi: 10.2196/17224 (impact factor 7.08)
  19. Ryan Rivas, Shouq Sadah, Yuhang Guo, and Vagelis Hristidis. Classification of Health-Related Social Media Posts: Analysis and Evaluation. JMIR Public Health and Surveillance, 2020;6(2), doi: 10.2196/14952 (impact factor 14.56)
  20. My Hua, Shouq Sadah, Vagelis Hristidis,Prue Talbot. Health Effects Associated with Electronic Cigarette Use: Automated Mining of Online Forums. Journal of Medical Internet Research, 2020;22(1) (impact factor 4.9)
  21. Nhat Le, Ryan Rivas, James Flegal, Vagelis Hristidis. Decrease Product Rating Uncertainty Through Focused Reviews Solicitation. International Journal of Semantic Computing (IJSC) 13(4), 2019
  22. Ryan Rivas, Dinesh Patil, Vagelis Hristidis, Joseph R. Barr, Narayanan Srinivasan. The Impact of Colleges and Hospitals to Local Real Estate Markets. Springer Journal of Big Data (CiteScore 2017 = 8.51, https://www.scopus.com/sourceid/21100791292), 2019
  23. Nicole Ruggiano, Ellen Brown, S. Shaw, D. Geldmacher, Peter Clarke, Vagelis Hristidis, J. Bertram. The potential of information technology to navigate caregiving systems: Perspectives from dementia caregivers. Journal of Gerontological Social Work, Volume 62, Issue 4, 2019 (runner-up for 2020 Rose Dobrof Award)
  24. Ryan Rivas, Niloofar Montazeri, Nhat Le, Vagelis Hristidis. Automatic Classification of Online Doctor Reviews, Journal of Medical Internet Research, 2018 (impact factor 4.9)
  25. Mohiuddin Abdul Qader, Vagelis Hristidis. High-throughput Publish/Subscribe on top of LSM-based Storage. Distributed and Parallel Databases (DAPD) Journal, 2018
  26. Louiqa Raschid, Hassan Sayyadi, Vagelis Hristidis. Learning to Rank in Entity Relationship Graphs. INFORMS Journal on Computing, 2018
  27. Ellen Brown, Nicole Ruggiano, Juanjuan Li, Peter Clarke, Emma Sophia Kay, and Vagelis Hristidis. Smartphone-based Health Technologies for Dementia Care: Opportunities, Challenges, and Current Practices. Journal of Applied Gerontology, 2017
  28. Prajna Shetty, Ryan Rivas and Vagelis Hristidis. Correlating Health Insurance Plans' Ratings to Their Providers' Attributes. Journal of Medical Internet Research 2016 (impact factor 5.175)
  29. Shouq A Sadah, Moloud Shahbazi, Matthew T Wiley, Vagelis Hristidis. Demographic-Based Content Analysis of Online Health-Related Social Media. Journal of Medical Internet Research, Vol  18, No 6, 2016 (impact factor 5.175)
  30. Matthew T. Wiley, Ryan L. Rivas and Vagelis Hristidis. Provider attributes correlation analysis to their referral frequency and awards. BMC Health Services Research, volume 16, number 1, pages 1-13, 2016
  31. Ellen Leslie Brown, Nicole Ruggiano, Timothy F. Page, Lisa Roberts, Vagelis Hristidis, Karen L. Whiteman, Joana Castro. CareHeroes Web and Android Apps for Dementia Caregivers: A Feasibility Study. Research in Gerontological Nursing, July/August 2016 - Volume 9, Issue 4: 193-203,  2016
  32. Shouq A Sadah, Moloud Shahbazi, Matthew T Wiley, Vagelis Hristidis. A Study of the Demographics of Web-Based Health-Related Social Media Users. Journal of Medical Internet Research, Vol 17, No 8, 2015 (impact factor 5.175)
  33. Matthew Wiley, Canghong Jin, Vagelis Hristidis, Kevin M Esterling. Pharmaceutical Drugs Chatter on Online Social Networks. Elsevier Journal of Biomedical Informatics, Volume 49, Pages 245-254, June 2014 (pre-print version)
  34. Eduardo J. Ruiz, Vagelis Hristidis, Panagiotis G. Ipeirotis. Facilitating Document Annotation using Content and Querying Value. IEEE Transactions on Knowledge and Data Engineering (TKDE), Volume 26, Issue 2, pages 336-349, 2014
  35. Vagelis Hristidis, Yao Wu, Louiqa Raschid. Efficient Ranking on Entity Graphs with Personalized Relationships. IEEE Transactions on Knowledge and Data Engineering (TKDE), vol. 26 no. 4, pages 850-863, April 2014
  36. Shiwen Cheng, Arash Termehchy, Vagelis Hristidis. Efficient Prediction of Difficult Keyword Queries over Databases. IEEE Transactions on Knowledge and Data Engineering (TKDE), vol. 26 no. 6, June 2014
  37. Ramakrishna Varadarajan, Fernando Farfan, Vagelis Hristidis. Comparing Top-k XML Lists. Elsevier Information Systems, Volume 38 Issue 6, September, Pages 820-834, 2013
  38. Nicole Ruggiano, Ellen Brown, Vagelis Hristidis, Timothy F. Page. Adding home health care to the discussion on health information technology policy. Home Health Care Services Quarterly, Volume 32, Issue 3, 2013
  39. Vagelis Hristidis. Challenges and Communities of Medical Informatics Research. ACM SIGMOD Record, Volume 41 Issue 4, December 2012, Pages 51-54
  40. Timothy F. Page, Ellen L. Brown, Nicole Ruggiano, Lisa Roberts, Vagelis Hristidis. Improving Care Delivery Using Health Information Technology in the Home Care Setting: Development of the Home Continuation Care Dashboard. Annals of Long-Term Care: Clinical Care and Aging. 2012;20(12):26-30
  41. N. Ruggiano, N. Shtompel, V. Hristidis, L. Roberts, J. Grochowski, E. L. Brown. Need and Potential Use of Information Technology for Case Manager-Physician Communication in Home Care. Home Healthcare Management and Practice. 2012
  42. Abhijith Kashyap, Vagelis Hristidis, Michalis Petropoulos, Sotiria Tavoulari: Effective Navigation of Query Results Based on Concept Hierarchies. IEEE Trans. Knowl. Data Eng. (TKDE) 23(4): 540-553 (2011)
  43. Vagelis Hristidis, Yuheng Hu, Panagiotis G. Ipeirotis: Relevance-Based Retrieval on Hidden-Web Text Databases without Ranking Support. IEEE Trans. Knowl. Data Eng. (TKDE) 23(10): 1555-1568 (2011)
  44. Vagelis Hristidis, Ramakrishna Varadarajan, Paul Biondich, Michael Weiner: Information Discovery on Electronic Medical Records Using Authority-Flow Techniques, In BMC Medical Informatics and Decision Making 2010, 10:64, pages 1-11
  45. Vagelis Hristidis, Shu-Ching Chen, Tao Li, Steven Luis, Yi Deng: Survey of data management and analysis in disaster situations. Journal of Systems and Software 83(10): 1701-1714 (2010)
  46. Vagelis Hristidis, Yannis Papakonstantinou, Ramakrishna Varadarajan: Using Proximity Search to Estimate Authority Flow. IEEE Trans. Knowl. Data Eng. (TKDE) 22(12):1803-1808 (2010)
  47. Vagelis Hristidis, Oscar Valdivia, Michail Vlachos, Philip S. Yu: Information discovery across multiple streams. Elsevier Information Sciences 179(19):3268-3285 (2009)
  48. Muhammed Miah, Gautam Das, Vagelis Hristidis, Heikki Mannila: Determining Attributes to Maximize Visibility of Objects. IEEE Trans. Knowl. Data Eng. (TKDE) 21(7):959-973 (2009)
  49. Medha Bhadkamkar, Fernando Farfán, Vagelis Hristidis, and Raju Rangaswami. Storing Semi-structured data on disk drives. ACM Transactions on Storage, Vol. 5, Issue # 2, May, 2009 .
  50. Fernando Farfán, Vagelis Hristidis, Raju Rangaswami. 2LP: A Double-Lazy XML Parser. Elsevier Information Systems 34 (2009), pp. 145-163
  51. Man Lung Yiu, Nikos Mamoulis, Vagelis Hristidis: Extracting k most important groups from data efficiently. Data Knowl. Eng. 66(2): 289-310 (2008).
  52. Yi Deng, Seyed Masoud Sadjadi, Peter J. Clarke, Vagelis Hristidis, Raju Rangaswami, Yingbo Wang: CVM - A communication virtual machine. Journal of Systems and Software 81(10): 1640-1662 (2008)
  53. Ramakrishna Varadarajan, Vagelis Hristidis, Tao Li: Beyond Single-Page Web Search Results. IEEE Trans. Knowl. Data Eng. 20(3): 411-424 (2008)
  54. Vagelis Hristidis, Heasoo Hwang, Yannis Papakonstantinou. Authority-Based Keyword Search in Databases. ACM Trans. Database Syst (TODS) 33(1), pages 1-40, 2008
  55. Yufei Tao, Vagelis Hristidis, Dimitris Papadias, Yannis Papakonstantinou. Branch-and-Bound Processing of Ranked Queries. Elsevier Information Systems Volume 32, Issue 3, May 2007, Pages 424-445
  56. Surajit Chaudhuri, Gautam Das, Vagelis Hristidis, Gerhard Weikum: Probabilistic Information Retrieval Approach for Ranking of Database Query Results. ACM Trans. Database Syst (TODS) 31, 3 (Sep. 2006), 1134-1168
  57. Vagelis Hristidis, Nick Koudas, Yannis Papakonstantinou, Divesh Srivastava. Keyword Proximity Search in XML Trees. IEEE TKDE, April 2006 (Vol. 18, No. 4) pp. 525-539
  58. Vagelis Hristidis, Yannis Papakonstantinou: Algorithms and Applications for answering Ranked Queries using Ranked Views. VLDB Journal, Volume 13 , Issue 1, pages:49-70, January 2004
Book Chapters
  1. Vagelis Hristidis. Ranking Views. Encyclopedia of Databases, Springer, 2017
  2. Vagelis Hristidis, Fernando Farfán, Redmond P. Burke, Anthony F. Rossi, Jeffrey A. White. Challenges for Information Discovery on Electronic Medical Records. Book details: Next Generation of Data Mining. CRC - Taylor & Francis. Editors: Hillol Kargupta, Jiawei Han, Philip Yu, Rajeev Motwani, Vipin Kumar. 2008
Demos/Posters
  1. Ruggiano, N., Brown, E. L., Clarke, P., Roberts, L., Framil, C. V., Chevez, H., Hurley, S., Kopcsik, C., Allala, S. C., Hristidis, V., Agronin, M., & Geldmacher, D. S. (July 2023). Applying Implementation Frameworks to Health IT Development in Dementia Care: Lessons from the CareHeroes Project. Poster presented at the Alzheimer's Association International Conference, Amsterdam, The Netherlands.
  2. Steven Jacobs, Md Yusuf Sarwar Uddin, Michael Carey, Vagelis Hristidis, Vassilis J. Tsotras, N. Venkatasubramanian, Yao Wu, Syed Safir, Purvi Kaul, Xikui Wang, Mohiuddin Abdul Qader, Yawei Li. A BAD Demonstration: Towards Big Active Data. Demo at VLDB 2017
  3. Shouq Sadah, Moloud Shahbazi, Vagelis Hristidis. Querying Documents Annotated by Interconnected Entities. AAAI Conference on Weblogs and Social Media (ICWSM) 2017 (poster, 4 pages)
  4. Nhat Le, Vagelis Hristidis and Neal Young. Ontology- and Sentiment-aware Review Summarization. IEEE International Conference on Data Engineering (ICDE) 2017, poster paper (4 pages)
  5. Moloud Shahbazi, Matthew Wiley and Vagelis Hristidis. IRanker: Query-Specific Ranking of Reviewed Items. IEEE International Conference on Data Engineering (ICDE) 2017, poster paper (4 pages)
  6. Nicole Ruggiano, Ellen L Brown, Lisa Roberts, Vagelis Hristidis, and Peter Clarke. Expanding Health Information Technology to Support Hispanic Caregivers And Improve Dementia Care. Gerontological Society of America (GSA), The Gerontologist, Volume 56, Issue Suppl_3, 1 November 2016
  7. Nicole Ruggiano, Ellen L Brown, Lisa Roberts, Vagelis Hristidis, and Peter Clarke. Health Information Technology for Rural Caregivers: Intersecting Science, Policy and Practice . 21st IAGG World Congress of Gerontology and Geriatrics, Poster, San Francisco, 2017
  8. Shiwen Cheng, James Fang, Vagelis Hristidis, Harsha V. Madhyastha, Niluthpol Chowdhury Mithun, Dorian Perkins, Amit K. Roy-Chowdhury, Moloud Shahbazi, and Vassilis J. Tsotras. OSNI: Searching for Needles in a Haystack of Social Network Data. Demo at International Conference on Extending Database Technology (EDBT) 2016
  9. Azade Nazi, Saravanan Thirumuruganathan, Vagelis Hristidis, Nan Zhang and Gautam Das. Answering Complex Queries in an Online Community Network. Poster Paper, AAAI Conference on Weblogs and Social Media (ICWSM) 2015 (acceptance rate 25%)
  10. Hassan Sayyadi, John Edmonds, Vagelis Hristidis, Louiqa Raschid. Challenges in Personalized Authority Flow Based Ranking of Social Media. Poster Paper, 4th Int'l AAAI Conference on Weblogs and Social Media (ICWSM), 2010.
  11. Abhijith Kashyap, Vagelis Hristidis, Michalis Petropoulos and Sotiria Tavoulari. Exploring Biomedical Databases with BioNav. Demo Paper, ACM SIGMOD Conference 2009 (acceptance rate 37%)
  12. Fernando Farfán, Vagelis Hristidis, Anand Ranganathan, Redmond P. Burke. Ontology-Aware Search on XML-based Electronic Medical Records. Poster Paper, IEEE International Conference on Data Engineering (ICDE) 2008 (acceptance rate 31%)
  13. Vagelis Hristidis, Oscar Valdivia, Michalis Vlachos, Philip Yu. A System for Keyword Search on Textual Streams. Short Paper, SIAM Conference on Data Mining (SDM) 2007 (acceptance rate 25%)
  14. Nishant Kapoor, Gautam Das, Vagelis Hristidis, S. Sudarshan, Gerhard Weikum. STAR: A System for Tuple and Attribute Ranking of Query Answers. Demo paper, International Conference on Data Engineering (ICDE) 2007
  15. Vagelis Hristidis, Oscar Valdivia, Michalis Vlachos, Philip S. Yu: Continuous Keyword Search on Multiple Text Streams. Poster paper, ACM CIKM 2006 (acceptance rate 25%)
  16. Ramakrishna Varadarajan, Vagelis Hristidis, Tao Li: Searching the Web Using Composed Pages. Poster paper, ACM SIGIR 2006
  17. Heasoo Hwang, Vagelis Hristidis, Yannis Papakonstantinou. ObjectRank: A System for Authority-based Search on Databases. Demo paper, ACM SIGMOD 2006
  18. Medha Bhadkamkar, Fernando Farfán, Vagelis Hristidis, and Raju Rangaswami. Storing Trees on Disk Drives. Proceedings of the File and Storage Technologies WiP, 2005.
  19. Ramakrishna Varadarajan, Vagelis Hristidis: Structure-Based Query-Specific Document Summarization. Poster paper, CIKM 2005
  20. Andrey Balmin, Vagelis Hristidis, Nick Koudas, Yannis Papakonstantinou, Divesh Srivastava, Tianqiu Wang: A System for Keyword Search on XML Databases. Demo paper, VLDB 2003

Tutorials

  1. Chatbot Technologies and Challenges, tutorial at IEEE International Conference on Artificial Intelligence for Industries (ai4i), Laguna Hills, CA, September 2018

Technical Reports/Thesis

  1. Vagelis Hristidis. Keyword Search in Structured and Semistructured Databases. PhD Thesis, UCSD 2004
  2. Vagelis Hristidis, Yannis Papakonstantinou: Merging results from Multi-parametric Ranked Queries. UCSD Technical Report, 2001