Research Interests

My research focuses on combining the intelligence of humans in solving complex problems and the scalability of machines to process large amounts of data. In particular, I try to mix the two worlds by creating solutions to efficiently manage crowd-workers to deliver timely inputs to machine requests. My Phd thesis “Quality of Service in Crowd-Powered Systems” received the Prix Informatique 2015 (Best Thesis Award in Computer Science).

My work is supported by the Swiss National Science Foundation.

Jobs/Education

Projects

Teaching

Bibliography

  1. Roman Prokofyev, Djellel Difallah, Michael Luggen, and Philippe Cudre-Mauroux. “SwissLink: High-Precision, Context-Free Entity Linking Exploiting Unambiguous Labels.” In Proceedings of the 13th International Conference on Semantic Systems (SEMANTICS2017). Amsterdam, The Netherlands, 2017. Bibtex Slides PDF
  2. Djellel E. Difallah, Gianluca Demartini, and Philippe Cudré-Mauroux. “Scheduling Human Intelligence Tasks in Multi-Tenant Crowd-Powered Systems.” In WWW. Montreal, Canada: IW3C, 2016. Bibtex Slides PDF
  3. Alberto Tonon, Victor Felder, Djellel Eddine Difallah, and Philippe Cudré-Mauroux. “VoldemortKG: Mapping Schema.org and Web Entities to Linked Open Data.” In ISWC. Springer International Publishing, 2016. Bibtex Slides PDF
  4. Djellel E. Difallah, Michele Catasta, Gianluca Demartini, Panagiotis G Ipeirotis, and Philippe Cudré-Mauroux. “The Dynamics of Micro-Task Crowdsourcing – The Case of Amazon MTurk.” In WWW. Florence, Italy, 2015. Bibtex Slides PDF
  5. Dana Van Aken, Djellel E. Difallah, Andrew Pavlo, Carlo Curino, and Philippe Cudré-Mauroux. “BenchPress: Dynamic Workload Control in the OLTP-Bench Testbed.” In SIGMOD. Melbourne, Australia: ACM, 2015. Bibtex PDF
  6. Roman Prokofyev, Alberto Tonon, Michael Luggen, Loic Vouilloz, Djellel Eddine Difallah, and Philippe Cudré-Mauroux. “SANAPHOR: Ontology-Based Coreference Resolution.” In The Semantic Web - ISWC 2015 - 14th International Semantic Web Conference, Bethlehem, PA, USA, October 11-15, 2015, Proceedings, Part I, 458–73, 2015. Bibtex Slides PDF
  7. Djellel E. Difallah, Michele Catasta, Gianluca Demartini, and Philippe Cudré-Mauroux. “Scaling-up the Crowd: Micro-Task Pricing Schemes for Worker Retention and Latency Improvement.” In Second AAAI Conference on Human Computation and Crowdsourcing, 2014. Bibtex PDF
  8. Michele Catasta, Alberto Tonon, Djellel E. Difallah, Gianluca Demartini, Karl Aberer, and Philippe Cudré-Mauroux. “Hippocampus: Answering Memory Queries Using Transactive Search.” In WWW, 2014. Bibtex Slides PDF
  9. Djellel E. Difallah, Andrew Pavlo, Carlo Curino, and Philippe Cudré-Mauroux. “OLTP-Bench: An Extensible Testbed for Benchmarking Relational Databases.” Proceedings of the VLDB Endowment 7, no. 4 (2014). Bibtex Slides PDF
  10. Carlo Curino, Djellel E. Difallah, Chris Douglas, Subru Krishnan, Raghu Ramakrishnan, and Sriram Rao. “Reservation-Based Scheduling: If You’Re Late Don’t Blame Us!” In Proceedings of the 5th Annual Symposium on Cloud Computing, 2014. Bibtex PDF
  11. Michele Catasta, Alberto Tonon, Djellel Eddine Difallah, Gianluca Demartini, Karl Aberer, and Philippe Cudré-Mauroux. “TransactiveDB: Tapping into Collective Human Memories.” PVLDB 7, no. 14 (2014): 1977–80. Bibtex PDF
  12. Djellel E. Difallah, Philippe Cudré-Mauroux, and S. McKenna. “Scalable Anomaly Detection for Smart City Infrastructure Networks.” Internet Computing, IEEE 17, no. 99 (2013): 47. Bibtex PDF
  13. Djellel E. Difallah, Gianluca Demartini, and Philippe Cudré-Mauroux. “Pick-A-Crowd: Tell Me What You Like, and I’Ll Tell You What to Do.” In WWW. ACM, 2013. Bibtex PDF
  14. Gianluca Demartini, Djellel E. Difallah, and Philippe Cudré-Mauroux. “Large-Scale Linked Data Integration Using Probabilistic Reasoning and Crowdsourcing.” The VLDB Journal, June 2013. Bibtex PDF
  15. Djellel E. Difallah, Gianluca Demartini, and Philippe Cudré-Mauroux. “Mechanical Cheat: Spamming Schemes and Adversarial Techniques on Crowdsourcing Platforms.” CrowdSearch 2012 Workshop at WWW, 2012, 26–30. Bibtex PDF
  16. Gianluca Demartini, Djellel E. Difallah, and Philippe Cudré-Mauroux. “ZenCrowd: Leveraging Probabilistic Reasoning and Crowdsourcing Techniques for Large-Scale Entity Linking.” In WWW, 469–78. ACM, 2012. Bibtex PDF
  17. C.A. Curino, Djellel E. Difallah, A. Pavlo, and Philippe Cudré-Mauroux. “Benchmarking OLTP/Web Databases in the Cloud: the OLTP-Bench Framework.” In Proceedings of the Fourth International Workshop on Cloud Data Management, 17–20. ACM, 2012. Bibtex PDF
  18. Djellel E. Difallah, Ryan G. Benton, Vijay Raghavan, and Tom Johnsten. “FAARM: Frequent Association Action Rules Mining Using FP-Tree.” In ICDM Workshops, 398–404, 2011. Bibtex PDF
  19. Philippe Cudré-Mauroux, Gianluca Demartini, Djellel E. Difallah, A.E. Mostafa, V. Russo, and M. Thomas. A Demonstration of DNS3: a Semantic-Aware DNS Service. ISWC, 2011. Bibtex PDF