Mourad Khayati

Senior Researcher

Room	C433
Address	Bd de Pérolles 90 1700 Fribourg Switzerland
E-Mail	mkhayati [AT] exascale.info
Phone	+41 26 300 8460
Fax	+41 26 300 9726

News

Brief Bio

Mourad Khayati is a Senior researcher at the Department of Computer Science of the University of Fribourg, Switzerland. He did his PhD at University of Zurich, Switzerland, under the supervision of Prof. Michael Böhlen. He is leading the technical committee of the H2020 European project FashionBrain and is the principal investigator of the D-A-CH ProvDS project.

Research Interests

Time Series, data cleansing and recovery of missing values.

Teaching

Current:
- Spring 2020: Social Media Analytics
- Fall 2019: Social Media Analytics; Data Science Seminar (Neural Networks)
Past:
- 2018: Social Media Analytics; Data Science Seminar (Graph Embedding)
- 2017: Social Media Analytics; Data Science Seminar (Social Networks)
- 2016: Data Science Seminar (Predictive Analytics)
- 2015: Data Science Seminar (Scalable Machine Learning)

Projects & Tools

Projects:
- ProvDS (D-A-CH project): Principal investigator, 1.06.2018-31.05.2021
- FashionBrain (H2020 European project), Technical lead, 1.1.2017-31.12.2019
Tools:
- RecovDB: Recovery of Missing Values inside a Database (paper, ICDE’19)
- ReviVal: Recovery of Missing Blocks in Time Series Data (paper, ICDE’14)

Student Thesis

Available thesis:
- BSc/MSc Thesis: Real-time Clustering of Time Series Streams .
Ongoing thesis:
- BSc Thesis: Evaluation of Time Series prediction techniques.
- MSc Thesis: Online Anomaly Detection on Wikipedia Page Views.
- MSc Thesis: Multiclass Classification of Open-ended Answers.
- MSc Thesis: Taxonomy Enrichment.
- MSc Thesis: Benchmark of Time Series Database Systems.

Selected Publications

DBLP server.
Internal Server:

Ines Arous, Jie Yang, Mourad Khayati, and Philippe Cudré-Mauroux. “OpenCrowd: A Human-AI Collaborative Approach for Finding Social Influencers via Open-Ended Answers Aggregation.” In Proceedings of the Web Conference (WWW 2020). Taipei, Taiwan, 2020. Bibtex PDF Code
OpenCrowd: A Human-AI Collaborative Approach for Finding Social Influencers via Open-Ended Answers Aggregation

Ines Arous, Jie Yang, Mourad Khayati, and Philippe Cudré-Mauroux. “OpenCrowd: A Human-AI Collaborative Approach for Finding Social Influencers via Open-Ended Answers Aggregation.” In Proceedings of the Web Conference (WWW 2020). Taipei, Taiwan, 2020.
```
@inproceedings{arous2020www,
  title = {OpenCrowd: A Human-AI Collaborative Approach for Finding Social Influencers via Open-Ended Answers Aggregation},
  author = {Arous, Ines and Yang, Jie and Khayati, Mourad and Cudr{\'e}-Mauroux, Philippe},
  booktitle = {Proceedings of the Web Conference (WWW 2020)},
  year = {2020},
  address = {Taipei, Taiwan},
  url = {https://exascale.info/assets/pdf/arous2020www.pdf},
  code = {https://github.com/eXascaleInfolab/OpenCrowd}
}
```
×
Mourad Khayati, Alberto Lerner, Zakhar Tymchenko, and Philippe Cudré-Mauroux. “Mind the Gap: An Experimental Evaluation of Imputation of Missing Values Techniques in Time Series.” In Proceedings of the VLDB Endowment, Vol. 13, 2020. Bibtex PDF Code
Mind the Gap: An Experimental Evaluation of Imputation of Missing Values Techniques in Time Series

Mourad Khayati, Alberto Lerner, Zakhar Tymchenko, and Philippe Cudré-Mauroux. “Mind the Gap: An Experimental Evaluation of Imputation of Missing Values Techniques in Time Series.” In Proceedings of the VLDB Endowment, Vol. 13, 2020.
```
@inproceedings{khayati2020vldb,
  author = {Khayati, Mourad and Lerner, Alberto and Tymchenko, Zakhar and Cudr{\'{e}}{-}Mauroux, Philippe},
  title = {Mind the Gap: An Experimental Evaluation of Imputation of Missing Values Techniques in Time Series},
  booktitle = {Proceedings of the VLDB Endowment},
  volume = {13},
  number = {5},
  year = {2020},
  code = {https://github.com/eXascaleInfolab/bench-vldb20},
  url = {http://www.vldb.org/pvldb/vol13/p768-khayati.pdf}
}
```
×
Artem Lutov, Mourad Khayati, and Philippe Cudré-Mauroux. “DAOC: Stable Clustering of Large Networks.” In BigData, 2019. Bibtex PDF
DAOC: Stable Clustering of Large Networks

Artem Lutov, Mourad Khayati, and Philippe Cudré-Mauroux. “DAOC: Stable Clustering of Large Networks.” In BigData, 2019.
```
@inproceedings{lutov2019bigdata,
  author = {Lutov, Artem and Khayati, Mourad and Cudr{\'{e}}{-}Mauroux, Philippe},
  title = {DAOC: Stable Clustering of Large Networks},
  booktitle = {BigData},
  year = {2019},
  url = {https://exascale.info/assets/pdf/lutov2019bigdata.pdf}
}
```
×
Abdelouahab Khelifati, Mourad Khayati, and Philippe Cudré-Mauroux. “CORAD: Correlation-Aware Compression of Massive Time Series Using Sparse Dictionary Coding.” In BigData, 2019. Bibtex PDF
CORAD: Correlation-Aware Compression of Massive Time Series using Sparse Dictionary Coding

Abdelouahab Khelifati, Mourad Khayati, and Philippe Cudré-Mauroux. “CORAD: Correlation-Aware Compression of Massive Time Series Using Sparse Dictionary Coding.” In BigData, 2019.
```
@inproceedings{khelifati2019bigdata,
  author = {Khelifati, Abdelouahab and Khayati, Mourad and Cudr{\'{e}}{-}Mauroux, Philippe},
  title = {CORAD: Correlation-Aware Compression of Massive Time Series using Sparse Dictionary Coding},
  booktitle = {BigData},
  year = {2019},
  url = {https://exascale.info/assets/pdf/khelifati2019bigdata.pdf}
}
```
×
Mourad Khayati, Philippe Cudré-Mauroux, and Michael H. Böhlen. “Scalable Recovery of Missing Blocks in Time Series with High and Low Cross-Correlations.” In International Journal of Knowledge and Information Systems (KAIS), 2019. Bibtex
Scalable Recovery of Missing Blocks in Time Series with High and Low cross-Correlations

Mourad Khayati, Philippe Cudré-Mauroux, and Michael H. Böhlen. “Scalable Recovery of Missing Blocks in Time Series with High and Low Cross-Correlations.” In International Journal of Knowledge and Information Systems (KAIS), 2019.
```
@inproceedings{khayati2019kais,
  author = {Khayati, Mourad and Cudr{\'e}-Mauroux, Philippe and B{\"o}hlen, Michael H.},
  title = {Scalable Recovery of Missing Blocks in Time Series with High and Low cross-Correlations},
  booktitle = {International Journal of Knowledge and Information Systems (KAIS)},
  year = {2019}
}
```
×
Artem Lutov, Mourad Khayati, and Philippe Cudré-Mauroux. “Accuracy Evaluation of Overlapping and Multi-Resolution Clustering Algorithms on Large Datasets.” In Proceedings of the 6th IEEE International Conference on Big Data and Smart Computing (BigComp 2019), 2019. Bibtex PDF
Accuracy Evaluation of Overlapping and Multi-resolution Clustering Algorithms on Large Datasets

Artem Lutov, Mourad Khayati, and Philippe Cudré-Mauroux. “Accuracy Evaluation of Overlapping and Multi-Resolution Clustering Algorithms on Large Datasets.” In Proceedings of the 6th IEEE International Conference on Big Data and Smart Computing (BigComp 2019), 2019.
```
@inproceedings{lutov19bigcomp,
  title = {Accuracy Evaluation of Overlapping and Multi-resolution Clustering Algorithms on Large Datasets},
  author = {Lutov, Artem and Khayati, Mourad and Cudré-Mauroux, Philippe},
  booktitle = {Proceedings of the 6th IEEE International Conference on Big Data and Smart Computing (BigComp 2019)},
  year = {2019},
  url = {https://exascale.info/assets/pdf/bigcomp19r2-xmeasures.pdf}
}
```
×
Ines Arous, Mourad Khayati, Philippe Cudré-Mauroux, Ying Zhang, Martin Kersten, and Svetlin Stalinlov. “RecovDB: Accurate and Efficient Missing Blocks Recovery for Large Time Series.” In 35th IEEE International Conference on Data Engineering (ICDE 2019). Macau, China, 2019. Bibtex PDF Code Poster Tool
RecovDB: accurate and efficient missing blocks recovery for large time series

Ines Arous, Mourad Khayati, Philippe Cudré-Mauroux, Ying Zhang, Martin Kersten, and Svetlin Stalinlov. “RecovDB: Accurate and Efficient Missing Blocks Recovery for Large Time Series.” In 35th IEEE International Conference on Data Engineering (ICDE 2019). Macau, China, 2019.
```
@inproceedings{arous2019icde,
  title = {RecovDB: accurate and efficient missing blocks recovery for large time series},
  author = {Arous, Ines and Khayati, Mourad and Cudr{\'e}-Mauroux, Philippe and Zhang, Ying and Kersten, Martin and Stalinlov, Svetlin},
  booktitle = {35th IEEE International Conference on Data Engineering (ICDE 2019)},
  year = {2019},
  address = {Macau, China},
  url = {https://exascale.info/assets/pdf/recovdb19.pdf},
  code = {https://github.com/eXascaleInfolab/2018-RecovDB},
  poster = {https://exascale.info/assets/pdf/recovdb2019poster.pdf},
  tool = {https://exascale.info/projects/recovdb/}
}
```
×
Artem Lutov, Soheil Roshankish, Mourad Khayati, and Philippe Cudré-Mauroux. “StaTIX - Statistical Type Inference on Linked Data.” In IEEE International Conference on Big Data, Big Data 2018, Seattle, WA, USA, December 10-13, 2018, 2253–62, 2018. Bibtex PDF
StaTIX - Statistical Type Inference on Linked Data

Artem Lutov, Soheil Roshankish, Mourad Khayati, and Philippe Cudré-Mauroux. “StaTIX - Statistical Type Inference on Linked Data.” In IEEE International Conference on Big Data, Big Data 2018, Seattle, WA, USA, December 10-13, 2018, 2253–62, 2018.
```
@inproceedings{statix18,
  author = {Lutov, Artem and Roshankish, Soheil and Khayati, Mourad and Cudr{\'{e}}{-}Mauroux, Philippe},
  title = {StaTIX - Statistical Type Inference on Linked Data},
  booktitle = {{IEEE} International Conference on Big Data, Big Data 2018, Seattle, WA, USA, December 10-13, 2018},
  pages = {2253--2262},
  year = {2018},
  doi = {10.1109/BigData.2018.8622285},
  url = {https://exascale.info/assets/pdf/bigdata18_statix.pdf}
}
```
×
Artem Lutov, Mourad Khayati, and Philippe Cudré-Mauroux. “Clubmark: A Parallel Isolation Framework for Benchmarking and Profiling Clustering Algorithms on NUMA Architectures.” In 2018 IEEE International Conference on Data Mining Workshops, ICDM Workshops, Singapore, Singapore, November 17-20, 2018, 1481–86, 2018. Bibtex Slides PDF
Clubmark: A Parallel Isolation Framework for Benchmarking and Profiling Clustering Algorithms on NUMA Architectures

Artem Lutov, Mourad Khayati, and Philippe Cudré-Mauroux. “Clubmark: A Parallel Isolation Framework for Benchmarking and Profiling Clustering Algorithms on NUMA Architectures.” In 2018 IEEE International Conference on Data Mining Workshops, ICDM Workshops, Singapore, Singapore, November 17-20, 2018, 1481–86, 2018.
```
@inproceedings{clubmark18,
  author = {Lutov, Artem and Khayati, Mourad and Cudr{\'{e}}{-}Mauroux, Philippe},
  title = {Clubmark: {A} Parallel Isolation Framework for Benchmarking and Profiling Clustering Algorithms on {NUMA} Architectures},
  booktitle = {2018 {IEEE} International Conference on Data Mining Workshops, {ICDM} Workshops, Singapore, Singapore, November 17-20, 2018},
  pages = {1481--1486},
  year = {2018},
  doi = {10.1109/ICDMW.2018.00212},
  url = {https://exascale.info/assets/pdf/icdm18_clubmark.pdf},
  note = {https://www.slideshare.net/ArtemVL/clubmark-a-parallel-isolation-framework-for-benchmarking-and-profiling-clustering-algorithms-icdm18-demo-poster}
}
```
×

Andrea Martini, Artem Lutov, Valerio Gemmetto, Andrii Magalich, Alessio Cardillo, Alex Constantin, Vasyl Palchykov, et al. “ScienceWISE: Topic Modeling over Scientific Literature Networks.” ArXiv e-Prints, 2016. Bibtex PDF

ScienceWISE: Topic Modeling over Scientific Literature Networks

@article{ScienceWISE16a,
  title = {ScienceWISE: Topic Modeling over Scientific Literature Networks},
  author = {Martini, Andrea and Lutov, Artem and Gemmetto, Valerio and Magalich, Andrii and Cardillo, Alessio and Constantin, Alex and Palchykov, Vasyl and Khayati, Mourad and Cudré-Mauroux, Philippe and Boyarsky, Alexey and Ruchayskiy, Oleg and Garlaschelli, Diego and Rios, Paolo De Los and Aberer, Karl},
  journal = {ArXiv e-prints},
  archiveprefix = {arXiv},
  eprint = {1612.07636},
  primaryclass = {cs.DL},
  url = {https://arxiv.org/pdf/1612.07636},
  year = {2016}
}

Laura Rettig, Mourad Khayati, Philippe Cudré-Mauroux, and Michal Piorkowski. “Online Anomaly Detection over Big Data Streams.” In 2015 IEEE International Conference on Big Data, Big Data 2015, Santa Clara, CA, USA, Oct 27- Nov 01, 2015. Bibtex PDF
Online Anomaly Detection over Big Data Streams

Laura Rettig, Mourad Khayati, Philippe Cudré-Mauroux, and Michal Piorkowski. “Online Anomaly Detection over Big Data Streams.” In 2015 IEEE International Conference on Big Data, Big Data 2015, Santa Clara, CA, USA, Oct 27- Nov 01, 2015.
```
@inproceedings{OnlineAnomaly,
  author = {Rettig, Laura and Khayati, Mourad and Cudr{\'e}-Mauroux, Philippe and Piorkowski, Michal},
  title = {Online Anomaly Detection over Big Data Streams},
  booktitle = {2015 {IEEE} International Conference on Big Data, Big Data 2015, Santa Clara, CA, USA, Oct 27- Nov 01},
  year = {2015},
  url = {https://exascale.info/assets/pdf/Rettig_BigData-15.pdf}
}
```
×
Mourad Khayati, Philippe Cudré-Mauroux, and Michael H. Böhlen. “Using Lowly Correlated Time Series to Recover Missing Values in Time Series: a Comparison between SVD and CD.” In Advances in Spatial and Temporal Databases - 15th International Symposium, SSTD 2015, Seoul, South Korea, August 26-28, 2015. Proceedings, 2015. Bibtex PDF
Using Lowly Correlated Time Series to Recover Missing Values in Time Series: a Comparison between SVD and CD

Mourad Khayati, Philippe Cudré-Mauroux, and Michael H. Böhlen. “Using Lowly Correlated Time Series to Recover Missing Values in Time Series: a Comparison between SVD and CD.” In Advances in Spatial and Temporal Databases - 15th International Symposium, SSTD 2015, Seoul, South Korea, August 26-28, 2015. Proceedings, 2015.
```
@conference{DBLP:conf/ssd/KhMB15,
  title = {Using Lowly Correlated Time Series to Recover Missing Values in Time Series: a Comparison between SVD and CD},
  booktitle = {Advances in Spatial and Temporal Databases - 15th International Symposium, {SSTD} 2015, Seoul, South Korea, August 26-28, 2015. Proceedings},
  year = {2015},
  author = {Khayati, Mourad and Cudr{\'e}-Mauroux, Philippe and B{\"o}hlen, Michael H.},
  url = {https://exascale.info/assets/pdf/khayati_sstd15.pdf}
}
```
×
Mourad Khayati, Michael H. Böhlen, and Johann Gamper. “Memory-Efficient Centroid Decomposition for Long Time Series.” In IEEE 30th International Conference on Data Engineering, Chicago, ICDE 2014, IL, USA, March 31 - April 4, 2014, 100–111, 2014. Bibtex PDF
Memory-efficient centroid decomposition for long time series

Mourad Khayati, Michael H. Böhlen, and Johann Gamper. “Memory-Efficient Centroid Decomposition for Long Time Series.” In IEEE 30th International Conference on Data Engineering, Chicago, ICDE 2014, IL, USA, March 31 - April 4, 2014, 100–111, 2014.
```
@conference{DBLP:conf/icde/KhayatiBG14,
  title = {Memory-efficient centroid decomposition for long time series},
  booktitle = { {IEEE} 30th International Conference on Data Engineering, Chicago, {ICDE} 2014, IL, USA, March 31 - April 4, 2014},
  year = {2014},
  pages = {100{\textendash}111},
  doi = {10.1109/ICDE.2014.6816643},
  url = {https://exascale.info/assets/pdf/khayati_ICDE14.pdf},
  author = {Khayati, Mourad and B{\"o}hlen, Michael H. and Gamper, Johann}
}
```
×
Mourad Khayati, and Michael H. Böhlen. “REBOM: Recovery of Blocks of Missing Values in Time Series.” In Proceedings of the 18th International Conference on Management of Data, COMAD 2012, 2012, Pune, India, 44–55, 2012. Bibtex PDF
REBOM: Recovery of Blocks of Missing Values in Time Series

Mourad Khayati, and Michael H. Böhlen. “REBOM: Recovery of Blocks of Missing Values in Time Series.” In Proceedings of the 18th International Conference on Management of Data, COMAD 2012, 2012, Pune, India, 44–55, 2012.
```
@conference{DBLP:conf/comad/KhayatiB12,
  title = {REBOM: Recovery of Blocks of Missing Values in Time Series},
  booktitle = {Proceedings of the 18th International Conference on Management of Data, {COMAD} 2012, 2012, Pune, India},
  year = {2012},
  pages = {44{\textendash}55},
  url = {https://exascale.info/assets/pdf/khayati_comad12.pdf},
  author = {Khayati, Mourad and B{\"o}hlen, Michael H.}
}
```
×

PhD Thesis: Mourad Khayati. Recovery of Missing Values using Matrix Decomposition Techniques, University of Zurich, Switzerland. PDF