All Stories

  1. TrajLM: Transferable Mobility Pattern Distillation for Unified Trajectory Learning in Sparse Road Networks

    Article • Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies, June 2026, ACM (Association for Computing Machinery)

    Chenhao Ma

  2. Explainable Anomaly Detection in Dynamic Heterogeneous Graphs via Relation Evolution

    Article • IEEE Transactions on Knowledge and Data Engineering, May 2026, Institute of Electrical & Electronics Engineers (IEEE)

    Chenhao Ma

  3. Hitcher: Efficient GPU-based Vector Search via Cluster-Centric Kernel and Hitch-Ride Ordering

    Article • April 2026, ACM (Association for Computing Machinery)

    Chenhao Ma

  4. Mamba Hawkes Process for Event Sequence Modeling

    Article • April 2026, ACM (Association for Computing Machinery)

    Shan Dai, Yuyang Shen, Chenhao Ma

  5. Scalable Privacy-Preserving Shortest Path Distance Computation via 2-Hop Labeling in MPC

    Article • Proceedings of the ACM on Management of Data, April 2026, ACM (Association for Computing Machinery)

    Wei Dong, Chenhao Ma

  6. Corrigendum: Attribute Filtering in Approximate Nearest Neighbor Search: An In-depth Experimental Study: [Experiments & Analysis]

    Article • Proceedings of the ACM on Management of Data, April 2026, ACM (Association for Computing Machinery)

    Chenhao Ma

  7. Finding Locally Densest Subgraphs: Convex Programming with Edge and Triangle Density

    Article • The VLDB Journal, January 2026, Springer Science + Business Media

    Chenhao Ma

  8. Attribute Filtering in Approximate Nearest Neighbor Search: An In-depth Experimental Study

    Article • Proceedings of the ACM on Management of Data, December 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  9. STORM: Spatio-Temporal Similar Trajectory Retrieval on Non-Uniform Maritime Data

    Article • November 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  10. TempASD: Temporal Anomalous Subgraph Discovery in Large-Scale Dynamic Financial Networks

    Article • August 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  11. UnG-MoCha: Neural Motif Counting in Uncertain Graphs

    Article • August 2025, ACM (Association for Computing Machinery)

    Lujie Ban, Chenhao Ma

  12. MoDiff - Graph Generation with Motif-aware Diffusion Model

    Article • August 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  13. UTCS: Effective Unsupervised Temporal Community Search with Pre-training of Temporal Dynamics and Subgraph Knowledge

    Article • July 2025, ACM (Association for Computing Machinery)

    Yankai Chen, Chenhao Ma

  14. SemExplorer: A User Interface for Semantic Approach to Customized Dataset Search

    Article • June 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  15. Accelerating Skyline Path Enumeration with a Core Attribute Index on Multi-attribute Graphs

    Article • Proceedings of the ACM on Management of Data, June 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  16. Similarity and Diversity: PCA-Based Contribution Evaluation in Federated Learning

    Article • IEEE Internet of Things Journal, June 2025, Institute of Electrical & Electronics Engineers (IEEE)

    Chenhao Ma

  17. Efficient Structural Clustering Over Hypergraphs

    Article • May 2025, Institute of Electrical & Electronics Engineers (IEEE)

    Chenhao Ma

  18. ReadGraph: Relational Evolution Enhanced Anomaly Detection in Dynamic Heterogeneous Graph

    Article • May 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  19. CSPO: Cross-Market Synergistic Stock Price Movement Forecasting with Pseudo-volatility Optimization

    Article • May 2025, ACM (Association for Computing Machinery)

    Sida LIN, Yankai Chen, Chenhao Ma

  20. TRACE: Intra-visit Clinical Event Nowcasting via Effective Patient Trajectory Encoding

    Article • May 2025, ACM (Association for Computing Machinery)

    Laks Lakshmanan, V.S., Yankai Chen, Chenhao Ma

  21. Hypergraph-Enhanced Multi-Granularity Stochastic Weight Completion in Sparse Road Networks

    Article • ACM Transactions on Knowledge Discovery from Data, April 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  22. Reproducibility Report for ACM SIGMOD 2024 Paper: 'Temporal JSON Keyword Search'

    Article • March 2025, ACM (Association for Computing Machinery)

    Chenhao Ma, Curtis Dyreson

  23. Efficient Maintenance of 2-Hop Labeling Index on Dynamic Small-World Graphs

    Article • Proceedings of the VLDB Endowment, March 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  24. Efficient Historical Butterfly Counting in Large Temporal Bipartite Networks via Graph Structure-Aware Index

    Article • Proceedings of the VLDB Endowment, February 2025, ACM (Association for Computing Machinery)

    Chenhao Ma

  25. Towards Effective Top-N Hamming Search via Bipartite Graph Contrastive Hashing

    Article • IEEE Transactions on Knowledge and Data Engineering, December 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Chenhao Ma

  26. In-Depth Analysis of Densest Subgraph Discovery in a Unified Framework

    Article • Proceedings of the VLDB Endowment, December 2024, ACM (Association for Computing Machinery)

    Chenhao Ma

  27. FDM: Effective and efficient incident detection on sparse trajectory data

    Article • Information Systems, November 2024, Elsevier

    Chenhao Ma

  28. Machine learning model improves job mobility predictions by studying market connections

    Article • October 2024, ACM (Association for Computing Machinery)

    Sida LIN, Yankai Chen, Shan Dai, Chenhao Ma

  29. Scalable Algorithm for Finding Balanced Subgraphs with Tolerance in Signed Networks

    Article • August 2024, ACM (Association for Computing Machinery)

    Chenhao Ma

  30. Efficient Maximal Motif-Clique Enumeration over Large Heterogeneous Information Networks

    Article • Proceedings of the VLDB Endowment, July 2024, ACM (Association for Computing Machinery)

    Chenhao Ma

  31. Distributed Shortest Distance Labeling on Large-Scale Graphs

    Article • Proceedings of the VLDB Endowment, June 2024, ACM (Association for Computing Machinery)

    Chenhao Ma

  32. On Efficient Large Sparse Matrix Chain Multiplication

    Article • Proceedings of the ACM on Management of Data, May 2024, ACM (Association for Computing Machinery)

    Chenhao Ma

  33. A Counting-based Approach for Efficient k-Clique Densest Subgraph Discovery

    Article • Proceedings of the ACM on Management of Data, May 2024, ACM (Association for Computing Machinery)

    Chenhao Ma

  34. A Similarity-based Approach for Efficient Large Quasi-clique Detection

    Article • May 2024, ACM (Association for Computing Machinery)

    Chenhao Ma

  35. Efficient Core Decomposition Over Large Heterogeneous Information Networks

    Article • May 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Chenhao Ma

  36. Efficient and effective algorithms for densest subgraph discovery and maintenance

    Article • The VLDB Journal, May 2024, Springer Science + Business Media

    Chenhao Ma

  37. Influential Exemplar Replay for Incremental Learning in Recommender Systems

    Article • Proceedings of the AAAI Conference on Artificial Intelligence, March 2024, Association for the Advancement of Artificial Intelligence (AAAI)

    Chenhao Ma

  38. Efficient Distributed Hop-Constrained Path Enumeration on Large-Scale Graphs

    Article • Proceedings of the ACM on Management of Data, March 2024, ACM (Association for Computing Machinery)

    Chenhao Ma

  39. Before Generation, Align it! A Novel and Effective Strategy for Mitigating Hallucinations in Text-to-SQL Generation

    Article • January 2024, Association for Computational Linguistics (ACL)

    Chenhao Ma

  40. TRoute: Dynamic Time-Dependent Route Recommendation on Road Networks

    Article • January 2024, Springer Science + Business Media

    Chenhao Ma

  41. MOSER: Scalable Network Motif Discovery Using Serial Test

    Article • Proceedings of the VLDB Endowment, November 2023, ACM (Association for Computing Machinery)

    Chenhao Ma

  42. Accelerating directed densest subgraph queries with software and hardware approaches

    Article • The VLDB Journal, July 2023, Springer Science + Business Media

    Chenhao Ma

  43. Efficient and Effective Algorithms for Generalized Densest Subgraph Discovery

    Article • Proceedings of the ACM on Management of Data, June 2023, ACM (Association for Computing Machinery)

    Chenhao Ma

  44. On Querying Connected Components in Large Temporal Graphs

    Article • Proceedings of the ACM on Management of Data, June 2023, ACM (Association for Computing Machinery)

    Chenhao Ma

  45. Scalable Algorithms for Densest Subgraph Discovery

    Article • April 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Chenhao Ma

  46. Fdm: Effective and Efficient Incident Detection on Sparse Trajectory Data

    Article • January 2023, Elsevier

    Chenhao Ma

  47. Densest subgraph discovery on large graphs

    Article • Proceedings of the VLDB Endowment, August 2022, ACM (Association for Computing Machinery)

    Chenhao Ma

  48. Towards Passive, Migration-Free, Standardized, Long-Term Database Archival

    Article • ACM SIGMOD Record, July 2022, ACM (Association for Computing Machinery)

    Chenhao Ma

  49. Effective community search over large star-schema heterogeneous information networks

    Article • Proceedings of the VLDB Endowment, July 2022, ACM (Association for Computing Machinery)

    Chenhao Ma

  50. Finding locally densest subgraphs

    Article • Proceedings of the VLDB Endowment, July 2022, ACM (Association for Computing Machinery)

    Chenhao Ma

  51. A Convex-Programming Approach for Efficient Directed Densest Subgraph Discovery

    Article • June 2022, ACM (Association for Computing Machinery)

    Chenhao Ma, Laks Lakshmanan, V.S.

  52. DeepTEA

    Article • Proceedings of the VLDB Endowment, March 2022, ACM (Association for Computing Machinery)

    Chenhao Ma

  53. On Directed Densest Subgraph Discovery

    Article • ACM Transactions on Database Systems, December 2021, ACM (Association for Computing Machinery)

    Chenhao Ma, Laks Lakshmanan, V.S.

  54. Efficient Directed Densest Subgraph Discovery

    Article • ACM SIGMOD Record, June 2021, ACM (Association for Computing Machinery)

    Chenhao Ma, Laks Lakshmanan, V.S.

  55. On analyzing graphs with motif-paths

    Article • Proceedings of the VLDB Endowment, February 2021, ACM (Association for Computing Machinery)

    Chenhao Ma

  56. Efficient Algorithms for Densest Subgraph Discovery on Large Directed Graphs

    Article • May 2020, ACM (Association for Computing Machinery)

    Laks Lakshmanan, V.S., Chenhao Ma

  57. LINC

    Article • Proceedings of the VLDB Endowment, October 2019, ACM (Association for Computing Machinery)

    Chenhao Ma