About me

04/2011 - 02/2014: Master of Science in Computer Science, University of Freiburg
03/2014 - up to now: Joined the Databases and Information Systems group of Prof. Dr. Lausen as a Ph.D. student

Research Interests

Cross-domain Recommender Systems
Distributed Computing (Spark)
Semantic Web (RDF storage, SPARQL Evaluation, Linked Data)
Route Planning

Current Research Projects

Publications

Guilherme Schievelbein, Victor Anthony Arrascue Ayala, Fang Wei-Kleiner and Georg Lausen:
Exploiting Wide Property Tables Empowered by Inverse Properties for Efficient Distributed SPARQL Query Evaluation.
International Semantic Web Conference (P&D) (ISWC 2019)
Victor Anthony Arrascue Ayala, Georg Lausen:
RecSPARQL for Cross-Domain Recommendations.
International Semantic Web Conference (P&D) (ISWC 2019)
Victor Anthony Arrascue Ayala, Polina Koleva, Anas Alzogbi, Matteo Cossu, Michael Färber, Patrick Philipp, Guilherme Schievelbein, Io Taxidou, Georg Lausen:
Relational Schemata for Distributed SPARQL Query Processing. [.pdf]
In Proc. of the International Workshop on Semantic Big Data (SBD 2019) in conjunction with the 2019 ACM SIGMOD Conference (Sigmod 2019). Amsterdam, Netherlands, June 30-July 5, 2019
Victor Anthony Arrascue Ayala, Georg Lausen:
A Flexible N-Triples Loader for Hadoop. [.pdf]
International Semantic Web Conference (P&D) (ISWC 2018)
Victor Anthony Arrascue Ayala, Kemal Cagin Gülsen, Marco Muñiz, Anas Alzogbi, Michael Färber, Georg Lausen:
A Delay-Robust Touristic Plan Recommendation Using Real-World Public Transportation Information. [ .pdf ]
In Proc. of the Workshop on Recommenders in Tourism (RecTour 2017) at the 11th ACM Conference on Recommender Systems (RecSys 2017). Como, Italy, August 27th, 2017
Victor Anthony Arrascue Ayala, Trong-Nghia Cheng, Anas Alzoghbi, Georg Lausen:
Learning to Identify Complementary Products from DBpedia. [ .pdf ]
In Proc. of the Workshop on Linked Data on the Web (LDOW 2017) at the 26th International World Wide Web Conference (WWW 2017). Perth, WA, Australia, April 3rd, 2017
Anas Alzoghbi, Victor Anthony Arrascue Ayala, Peter M Fischer, Georg Lausen:
Learning-to-Rank in research paper CBF recommendation: Leveraging irrelevant papers [ .pdf ]
In Proc. of the 3rd Workshop on New Trends in Content-Based Recommender Systems (CBRecSys 2016) co-located with ACM Conference on Recommender Systems (RecSys 2016). Boston, MA, USA, September 16, 2016
Anas Alzoghbi, Victor Anthony Arrascue Ayala, Peter M Fischer, Georg Lausen:
PubRec: Recommending Publications Based On Publicly Available Meta-Data [ .pdf ]
In Proc. of the LWA 2015 Workshops: KDML, FGWM, IR, and FGDB. Trier, Germany, October 7-9, 2015
Victor Anthony Arrascue Ayala, Anas Alzoghbi, Martin Przyjaciel-Zablocki, Alexander Schätzle, Georg Lausen:
Speeding up Collaborative Filtering with Parametrized Preprocessing [ .pdf ]
In Proc. of the 6th International Workshop on Social Recommender Systems (SRS 2015),
in conjunction with the 2015 ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD 2015). Sydney, Australia, August 2015.
Victor Anthony Arrascue Ayala, Martin Przyjaciel-Zablocki, Thomas Hornung, Alexander Schätzle, Georg Lausen:
Extending SPARQL for Recommendations [ .pdf ]
In Proc. of the 6th International Workshop on Semantic Web Information Management (SWIM 2014),
in conjunction with the 2014 ACM International Conference on Management of Data (SIGMOD 2014). Snowbird, Utah (USA), June 2014.

Talks

Recommender Systems and SPARQL: More than a Shotgun Wedding?
8th Alberto Mendelzon International Workshop (AMW 2014). Cartagena (CO), June 2014.

Master Thesis

ReSPARQL: a SPARQL Extension for Generic Recommendations on RDF-graphs [ .pdf ]
February 2014. University of Freiburg (Germany)