Journal Articles:
  1. Query-Sensitive Embeddings [pdf],
    V. Athitsos, M. Hadjieleftheriou, G. Kollios, S. Sclaroff
    ACM Transactions on Database Systems (TODS)
    (to appear).

  2. Random Sampling for Continuous Streams with Arbitrary Updates [pdf],
    Y. Tao, X. Lian, D. Papadias, M. Hadjieleftheriou
    IEEE Transactions in Knowledge and Data Engineering (TKDE)
    (to appear).

  3. SaIL: A Spatial Index Library for Efficient Application Integration [pdf],
    M. Hadjieleftheriou, E. Hoel, V. J. Tsotras
    Geoinformatica,
    Vol. 9, No. 4, 2005.

  4. Indexing Spatio-temporal Archives [pdf],
    M. Hadjieleftheriou, G. Kollios, V. J. Tsotras, D. Gunopulos
    The VLDB Journal,
    Vol. 15, Issue 2, June 2006.

  5. Indexing Multi-Dimensional Time-Series [pdf],
    M. Vlachos, M. Hadjieleftheriou, D. Gunopulos, E. Keogh
    The VLDB Journal,
    Vol. 15, Issue 1, January 2006.

  6. Indexing Animated Objects Using Spatiotemporal Access Methods [pdf],
    G. Kollios, D. Gunopulos, V.J. Tsotras, A. Delis, M. Hadjieleftheriou,
    IEEE Transactions on Knowledge & Data Engineering (TKDE),
    Vol. 13, No. 5, September/October 2001.

Peer Reviewed Conference Publications:
  1. Hashed Samples: Selectivity Estimators For Set Similarity Selection Queries [pdf],
    M. Hadjieleftheriou, X. Yu, N. Koudas, D. Srivastava
    Proc. of the International Conference on Very Large Data Bases (VLDB)
    Auckland, New Zealand, August 2008.

  2. Finding Frequent Items in Data Streams [pdf], [Source Code and Data]
    G. Cormode, M. Hadjieleftheriou
    Proc. of the International Conference on Very Large Data Bases (VLDB)
    Auckland, New Zealand, August 2008.

  3. Fast Indexes and Algorithms for Set Similarity Selection Queries [pdf],
    M. Hadjieleftheriou, A. Chandel, N. Koudas, D. Srivastava
    Proc. of the International Conference on Data Engineering (ICDE)
    Cancun, Mexico, April 2008.

  4. Randomized Synopsis for Query Assurance on Data Streams [pdf],
    K. Yi, F. Li, M. Hadjieleftheriou, D. Srivastava, G. Kollios
    Proc. of the International Conference on Data Engineering (ICDE)
    Cancun, Mexico, April 2008.

  5. Proof-Infused Streams: Enabling Authentication of Sliding Window Queries On Streams [pdf],
    F. Li, K. Yi, M. Hadjieleftheriou, G. Kollios
    Proc. of the International Conference on Very Large Databases (VLDB)
    Vienna, Austria, September 2007.

  6. Continuous Constraint Query Evaluation For Spatiotemporal Streams [pdf],
    M. Hadjieleftheriou, N. Mamoulis, Y. Tao
    Proc. of the International Symposium on Spatial and Temporal Databases (SSTD)
    Boston, USA, July 2007.

  7. Norm, Point and Distance Estimation Over Multiple Signals Using Max-Stable Distributions [pdf],
    S. Stoev, M. Hadjieleftheriou, G. Kollios, M. Taqqu
    Proc. of the IEEE International Conference on Data Engineering (ICDE)
    Istanbul, Turkey, April 2007.

  8. Global Distance-Based Segmentation of Trajectories [pdf],
    A. Anagnostopoulos, M. Vlachos, M. Hadjieleftheriou, E. Keogh, P. S. Yu
    Proc. of the ACM Knowledge Discovery and Data Mining (SIGKDD)
    Philadelphia, PA, August 2006.

  9. Dynamic Authenticated Index Structures for Outsourced Databases [pdf],
    F. Li, M. Hadjieleftheriou, G. Kollios, L. Reyzin
    Proc. of the ACM Management of Data (SIGMOD)
    Chicago, IL, June 2006.

  10. Processing Ranked Queries with the Minimum Space [pdf],
    Y. Tao, M. Hadjieleftheriou
    Proc. of 4th International Symposium on Foundations of Information and Knowledge Systems (FoIKS),
    Budapest, Hungary, February 2006.

  11. Time Relaxed Spatiotemporal Trajectory Joins [pdf],
    P. Bakalov, M. Hadjieleftheriou, V.J. Tsotras
    Proc. of the 13th ACM International Symposium on Advances in Geographic Information Systems (ACM-GIS),
    Bremen, Germany, November 2005.

  12. On Trip Planning Queries in Spatial Databases [pdf],
    F. Li, D. Cheng, M. Hadjieleftheriou, G. Kollios, S.-H. Teng
    Proc. of the 9th International Symposium on Spatial and Temporal Databases (SSTD),
    Angra dos Reis, Brazil, August 2005.

  13. Complex Spatio-Temporal Pattern Queries [pdf],
    M. Hadjieleftheriou, G. Kollios, P. Bakalov, V. J. Tsotras
    Proc. of the Very Large Data Bases Conference (VLDB)
    Trondheim, Norway, September 2005.

  14. Conceptual Partitioning: An Efficient Method for Continuous Nearest Neighbor Monitoring [pdf],
    K. Mouratidis, M. Hadjieleftheriou, D. Papadias
    Proc. of the ACM Management of Data (SIGMOD)
    Baltimore, MD, June 2005.

  15. Query Sensitive Embeddings [pdf],
    V. Athitsos, M. Hadjieleftheriou, G. Kollios, S. Sclaroff
    Proc. of the ACM Management of Data (SIGMOD)
    Baltimore, MD, June 2005.

  16. RPJ: Producing Fast Join Results on Streams Through Rate-based Optimization [pdf],
    Y. Tao, M. L. Yiu, D. Papadias, M. Hadjieleftheriou, N. Mamoulis
    Proc. of the ACM Management of Data (SIGMOD)
    Baltimore, MD, June 2005.

  17. Efficient Trajectory Joins Using Symbolic Representations [pdf],
    P. Bakalov, M. Hadjieleftheriou, E. Keogh, V. J. Tsotras
    Proc. of the 6th International Conference on Mobile Data Management (MDM),
    Ayia Napa, Cyprus, May 2005.

  18. Mining, Indexing, and Querying Historical Spatiotemporal Data [pdf],
    N. Mamoulis, H. Cao, G. Kollios, M. Hadjieleftheriou, Y. Tao, D. W. Cheung
    Proc. of the 10th International Conference on Knowledge Discovery and Data Mining (SIGKDD),
    Seattle, WA, August 2004.

  19. SaIL: A Library for Efficient Application Integration of Spatial Indices [pdf],
    M. Hadjieleftheriou, E. Hoel, V. Tsotras
    Proc. of the 16th International Conference on Scientific and Statistical Database Management (SSDBM),
    Santorini, Greece, June 2004.

  20. Spatio-Temporal Data Services in a Shared-Nothing Environment [pdf],
    M. Hadjieleftheriou, V. Kriakov, Y. Tao, G. Kollios, A. Delis, V. Tsotras
    Proc. of the 16th International Conference on Scientific and Statistical Database Management (SSDBM),
    Santorini, Greece, June 2004.

  21. Indexing Multi-Dimensional Time-Series with Support for Multiple Distance Measures [pdf],
    M. Vlachos, M. Hadjieleftheriou, D. Gunopulos, E. Keogh
    Proc. of the 9th International Conference on Knowledge Discovery and Data Mining (SIGKDD),
    Washington, DC, August 2003.

  22. On-Line Discovery of Dense Areas in Spatio-temporal Databases [pdf],
    M. Hadjieleftheriou, G. Kollios, D. Gunopulos, V.J. Tsotras
    Proc. of the 8th International Symposium on Spatial and Temporal Databases (SSTD),
    Santorini, Greece, July 2003.

  23. Performance Evaluation of Spatio-temporal Selectivity Estimation Techniques [pdf],
    M. Hadjieleftheriou, G. Kollios, V.J. Tsotras
    Proc. of the 15th International Conference on Scientific and Statistical Database Management (SSDBM),
    Cambridge, Massachusetts, July 2003.

  24. Efficient Indexing of Spatiotemporal Objects [pdf],
    M. Hadjieleftheriou, G. Kollios, V.J. Tsotras, D. Gunopulos,
    Proc. of the 8th International Conference on Extending Database Technology (EDBT),
    Prague, Czech Republic, March 2002.

Technical Reports:
  1. Randomized Synopses for Query Verification on Data Streams [pdf],
    F. Li, K. Yi, M. Hadjieleftheriou, G. Kollios
    AT&T Technical Report November 2006.

  2. Robust Sketching and Aggregation of Distributed Data Streams [pdf],
    M. Hadjieleftheriou, J. W. Byers, G. Kollios
    B.U. Technical Report 2005-011.

Book Chapters:
  1. Indexing Multi-Dimensional Trajectories for Similarity Queries,
    M. Vlachos, M. Hadjieleftheriou, E. Keogh, D. Gunopulos,
    Book chapter in Spatial Databases: Technologies, Techniques and Trends},
    (ISBN 1-59140-387-1).

Source Code:
  1. Conceptual Partitioning: An Efficient Method for Continuous Nearest Neighbor Monitoring [pdf], [source]
    The implementation of the CPM algorithm and its alternatives.

  2. On-Line Discovery of Dense Areas in Spatio-temporal Databases [pdf], [source]
    Contains implementations of the Lossy Counting algorithm, Bloom Filters, Coarse Grids, Exact Search and other useful utilities. Please download the Spatio-temporal generators to create datasets compliant with the source code.

  3. Performance Evaluation of Spatio-temporal Selectivity Estimation Techniques [pdf], [source]
    Contains implementations of an Aggregate R-tree (AR-tree), 2-dimensional and 4-dimensional GENHIST and MINSKEW histogram algorithms, Reservoir Sampling, various estimator implementations on primal and dual spaces (including Hough-X, sampling [choi02], [tao02], etc.). Please download the Spatio-temporal generators to create datasets compliant with the source code.

  4. Efficient Indexing of Spatiotemporal Objects [pdf], [source]
    Contains implementations of dynamic and greedy split algorithms, dynamic, greedy and look-ahead greedy split assignment algorithms and other useful utilities and data generators. Needs the Spatial Index Library to compile and run.

Needed Libraries:
  1. Spatial Index Library (C++ and Java).
  2. Spatio-temporal generators (Moving object generators).
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