Applying Logic to the Specification and Computation of Attribution Scores in Explainable Machine Learning". Talk WS FANeSy, March 2024.
"Tractability and Optimization of
Shap-Score Computation for
Explainable AI". Presentation at Dagstuhl Seminar 24032 on "Representation, Provenance, and Explanations in Database Theory and Logic". Jan. 2024.
"What Is An Interpretation
in AI?". Presentation at SKEMA EPURAI WS, Paris, Nov. 2023.
"Tractability and Optimization of
Shap-Score Computation for
Explainable AI". Presentation at U. Grenoble, and U. Leonardo de Vinci, Paris. Nov. 23. Extended version.
"Attribution-Scores in Data
Management and Explainable
Machine Learning". Tutorial At ADBIS 2023, Barcelona, Sept. 2023.
"Computing Shapley Values as
Explanation Scores in Data Management and Machine Learning". France and UC San Diego, May-June 2023.
Explainable AI for Classification and Decision Systems. Presentation at "CUIDS Distinguished Speaker Series", Carleton University Institute for Data Science Seminar. March 2023. Video.
Score-Based Explanations in
Data Management
and
ML-Based Classification. Presentation at "Data Science Forum", RBC, Toronto, 2023.
Correct Inference and Learning in the
Presence of Incomplete Data. Skema Prism Seminar, Dec. 2022.
Keynote at BDA, Oct. 2022.
"From Database Repairs to
Causality in Databases
and Beyond.
Skema Masterclass. Oct. 20, 2022.
"Explanable Artificial Intelligence and Classification Systems.
2nd Samsung WS on Neuro-Symbolic AI, June 2022.
"Counterfactual-Based Explanations
for Classification Outcomes: Semantics and Reasoning".
Presentation at Chilean Naval Academy (Spanish), June 2022. "Inteligencia Artificial:
Origenes, Concepciones y Problemas".
Presentation at PUC-DCC Seminar. "Explanations
in Machine Learning". March 2022.
Tutorial at Reasoning Web School 2021. ``Counterfactual and Score Based Explanations
in Data Management and Machine Learning:
An Answer-Set Programming Approach". September 2021.
Presentation at AI+LFCS Seminar, University of Edinburgh, July 2021.talk.
Presentation at Data Science Seminar, Universite Paris Decartes, Jan. 2021.talk.
Tutorial on "Score-Based Explanations in
Data Management and Machine
Learning". At Scalable Uncertainty Management Conference (SUM), 2020. Slides. Video.
Score-Based Explanations in
Data Management and Machine
Learning. DataLab Seminar Northeastern Univ., July 2020.
Database Repairs
and
Consistent Query Answering:
Origins and Further Developments. Gems of PODS presentation, 2019.
Variations on a Causality Theme
in Databases. Presentation as Dagstuhl Seminar on "Logics for Dependence and Independence". Jan. 2019.
Combining Declarative Approaches
to Data Cleaning with
Machine Learning for Entity Resolution:
Some New Trends in Data Science. Presentation at Universidad Adolfo Iba~nez (UAI), June 2018.
The Causality/Repair Connection in
Databases:
Causality-Programs. Presentation at SUM'17, Granada, Spain, Oct. 2017.
Some Declarative Approaches to
Data Quality. Tutorial at BICOD'17. Birkbeck College, London, 2017.
The Ontological
Multidimensional Data Model
in Datalog+-. Talk at Universidad Nacional del Sur, Bahia Blanca, Argentina, June 2017.
Datalog+- Multidimensional Ontologies and
Data Quality". Gottlob Celebration WS, Genova, Dec. 2016.
"Extending Weakly-Sticky Datalog+-:
Query-Answering Tractability and
Optimizations". Seminar "Centro de Investigacion de la Web Semantica", PUC, Chile. July 2016.
"ERBlox: Combining Matching
Dependencies with Machine Learning for Entity Resolution".
I Congreso Internacional De Ingenieria de Software y Sistemas De Informacion. Nov. 2015, Trujillo, Peru.
"Ontology-Based Data Access Subjects, Issues and Trends".
Tutorial. XII Congreso Internacional De Ingenieria de Software y Sistemas De Informacion. Nov. 2015, Trujillo, Peru.
"ERBlox: Combining Matching
Dependencies with Machine
Learning for Entity Resolution". CLEI'15, Arequipa, Peru, Oct. 2015.
"Logical and Probabilistic Knowledge
Representation and Reasoning". Cognitive Science Seminar. Carleton University, 2015.
"ERBlox: Combining Matching
Dependencies with Machine
Learning for Entity Resolution". Universidad del Bio-Bio, Concepcion, Chile, May 2015.
"Datalog Extensions as Ontology
Representation Languages and their
Applications". LANMR 2014, Valle de Bravo, Mexico, Nov. 2014.
"Ontology-Based Data Access
Subjects, Issues and Trends". COMTEL, Lima, Peru, 2014.
"Logica y Probabilidad en Representacion de Conocimiento" (in Spanish). Jornadas Rolando Chuaqui, Santiago de Chile, 2014.
Datalog+-: Its Languages and
Evaluation Issues. Talk at LogicBlox, Atlanta, April, 2014.
Contexts and
Multidimensional Data
Quality Assessment and
Cleaning. Talk at University of Toronto, January 2014.
Inconsistency Handling in Databases. Short PhD course at University of Rome, La Sapienza, and University of Calabria,
Arcavacata, 2013.
Matching Dependencies for Entity
Resolution in Databases. University of Rome, La Sapienza, Sept. 2013.
Semantic Constraints for Data Quality Assessment and Cleaning. University of Milano, Bicocca, June 2013.
Entity Resolution with
Matching Dependencies:
Beyond Certainty". Talk at BIN AGM, Vancouver, May, 2013.
"Contexts for Data Quality
Assessment and Cleaning". Part of plenary talk at SEBD'11, Maratea, Italy,
2011.
"Investigacion en Ciencia de Computacion
y Manejo de Datos (vision y trayectoria personales)". Universidad de Talca, Chile, March 2013.
Query Rewriting in Datalog
for On-The-Fly Entity Resolution. BIN AGM, Nov. 12, IBM Labs, Toronto.
Evolution and Change in
Relational Databases
An Overview of Some Issues. Talk at Dagstuhl Seminar Foundations and Challenges of Change and Evolution in Ontologies (12441), Schloss Dagstuhl, Germany, Oct. 28 - Nov. 02, 2012.
Business Intelligence: Recent
Experiences in Canada. Talk at Universidad del Desarrollo, Santiago, Chile, August 2012.
Multidimensional Contexts for Data Quality Assessment. Talk at University of Chile, Santiago, Chile, August 2012.
Semantic Constraints for Data Quality Assessment and Cleaning. Simon Fraser University, Vancouver, Canada, July 2012.
Multidimensional Contexts for Data Quality Assessment. Presentation at AMW 2012 (extended)
,June 2012.
Contexts for Data Quality Assessment and
Cleaning". BIN/IBM WS, IBM Watson Research Center, NY, February, 2012.
"Research in Computer Science and IT: How and Where Are We (Going)?
A Chilean Perspective". Keynote presentation at Encuentros 2011,
Berkeley, Nov. 2011.
"Semantic Constraints for
Data Quality Assessment and
Cleaning". Keynote Presentation at JCC'11, Curico, Chile, Nov. 2011.
"Semantic Constraints for
Data Quality Assessment and
Cleaning". Tutorial at SEBD'11, Maratea, June 2011.
"Contexts and Data Quality
Assessment and Cleaning". Talk at BIN WS, Banff, May 2011.
"Inconsistency-Driven Information Sharing in Peer Data Exchange Systems". Talk at University of Washington, Seattle, April 2011. video
"Some Recent Fundamental Approaches to Data Quality Assessment and
Cleaning". Talk at Oxford University, Computing Laboratory, and Birkbeck College, University of London.
February 2011.
"Using Answer Set Programs to Specify Virtual Data Integration Systems: Obtaining Consistent Query Answers". Talk at
LANMR09, Taxclala, Mexico, Nov. 09.
"From Consistent Query Answering to Query
Rewriting: A Detour Around Answer Set Programs" (shorter version of talk
given at LID08).
"Data Integration and Data Quality". Presentation at IBM CAS University Days, Toronto, 2009.
"Virtual Data Integration: Query Answering, Consistency and Specification". Keynote presentation at Globe 2009,
Linz.
"Data Quality in Information
Integration and Business
Intelligence". Talk at the Adolfo Iba~nez University, Chile, Dec. 2008.
"Information Agents in a Peer Data Exchange System" (extended). Talk at University of Bio-Bio, Chile, Dec. 2008; and
Univeristy of Quebec at Outaouais, Feb. 2009.
"From Hilbert to Turing and Beyond".
Talk at University of Concepcion, Dec. 2008.
extended version.
"Dealing with Inconsistent Data Sources: Scientific and Technical Challenges". Talk at University College Dublin, Sept. 2008.
"Information Agents in a Peer Data Exchange System". Talk at University of Chile and University of Rome 3, May 2008.
"From Consistent Query Answering to Query Rewriting: A Detour
Around Answer Set Programs" (keynote presentation at LID 08), May 2008.
Tutorial on "Virtual Data Integration and
Global Consistency" at Catholic University of Chile, Dec. 2007.
Tutorial on "Virtual Data Integration"
at University of Concepcion, Chile, Dec. 2007.
Tutorial on "Virtual Data Integration"
at the "Alberto Mendelzon Workshop", Punta del Este, Uruguay, Oct. 26,
2007.
The Semantics of Consistency and Trust
in Peer Data Exchange Systems. Presentation at Universidad de la Republica,
Montevideo, Uruguay, October 2007.
Situation Calculus
Specifications of Action and Change. Presentation at Alife, Montreal,
July 2007. alife.pdf
Presentation at University of Edimburgh, May 2007.
Consistent Query Answering in Databases
Under Cardinality-Based Repair Semantics.
Presentation at Universitat Pompeu Fabra, Barcelona, January 2007.
Consistent Query Answering in Relational and
XML Databases.
Presentation at University of Toronto, Dec. 2006.
Consistent Query Answering in
Databases Under Minimum Cardinality Semantics.
Presentation at University of Concepcion, Nov. 2006.
Consistent Query Answering in Databases: Recent
Developments".
Presentation at University of Freiburg, Germany, July 3rd, 2006.
Static and Incremental Complexity of Consistent
Query Answering under Attribute- and Cardinality-based Repairs.
Presentation at the "Workshop on Logic and Databases", Cambridge,
February 2006. Cardinality-based semantics for
consistent query answering: incremental and parameterized complexity.
Presentation at Technical University of Vienna 2005 (revised version),
Complexity and Approximation
of Fixing Numerical Attributes in Databases Under Integrity
Constraints.
Course at ESSLLI 2005. slidesEsslli05.pdf. papers.
Presentation at Queen's University, May 18, 2005. Consistent Answers from Integrated Data Sources.
Presentation at University of Akureyri, April 29, 2005. Consistent Query Answering in Databases.
Presentation at University at Buffalo, April 14, 2005. Consistent Answers from Integrated Data Sources.
Presentation at Simon Fraser University, March 02, 2005. Consistent Query Answering in Databases.
Presentation at Simon Fraser University, March 03, 2005. Consistent Query Answering in Virtual Data Integration Systems.
Presentation at CanDB04, Toronto, August 2004. slides.
"Consistent Query Answering". Tutorial at the Italian Conference on
Databases (SEBD 04). Sardinia, June 2004.
slides.
"Query Answering in Peer-to-Peer Data Exchange Systems". Talk at
the Dagstuhl Seminar on Logic Based Information Agents, April 2004.
slides.
"Virtual Data Integration". Tutorial at International Conference of the Chilean Computer Science Society (SCCC), Chillan, Chile, November 2003.
slides.
"Obtaining Consistent Answers from Databases". Invited talk, Universite
du Quebec en Outaouais, Oct. 2003.
slides.
"Observaciones sobre la Investigacion (en Bases de Datos)" (in Spanish).
Participation in the Panel at the Chilean Workshop on Databases, Chillan,
Nov. 2003. slides.