SocVis Social Computing & Visualization Group. SoCo: Social Computing, RS: Recommender Systems, UM: User Modeling, Pe: Personalization, Vis: Visualization

The PUC SocVis (Social Computing & Visualization Group) studies issues related with


About Us

At the SocVis Lab we use Computer and Information Sciences to study online individual and social behavior from an interdisciplinary view stand. We are interested in understanding how individuals and groups of people use online technology, and also in developing algorithms and applications to enhance the people's abilities to exploit those technologies. We focus on the following areas of research:

We use both quantitative and qualitative approaches in our research. Among the quantitative approaches we make extensive use of data mining algorithms and statistical analysis on off-line datasets to discover patterns of individual and social behaviors. We also perform user studies in order to test online our findings over off-line data analysis, where we combine qualitative and quantitave analysis.


2017-1 Meetings

We meet every Friday at 3:30 pm in the Computer Science Department (DCC) at PUC.

  • September 8th - Vicente Domínguez and Pablo Messina
  • September 22th - Jorge Schelmann
  • September 29th - María Fernanda Sepúlveda
  • October 13th - Andrés Carvallo
  • October 20th - Pablo Pino
  • November 3rd - Manuela Garretón
  • November 10th - Daniela Flores
  • November 17th - Isidora Palma

News

Tuesday 1 August 2017

Professor Denis Parra and graduate students will be presenting their work at RecSys 2017

Vicente Dominguez, Pablo Messina, Prof. Denis Parra, Prof. Domingo Mery, Prof. Christoph Trattner and Prof. Alvaro Soto will be presenting their work titled "Comparing Neural and Attractiveness-based Visual Features for Artwork Recommendation".

Tuesday 1 August 2017

Ph.D. student Diego Gómez will give a talk on Exponential Random Graph Models

Exponential Random Graph Models (ERGMs)have been referred to as a promising technique for the modeling of social networks (Snijders, 2007). Topics of this talk include examples of social networks modeling, the logic of ERGMs, parameter selection and estimation, parameter interpretation, Goodness of Fit, and troubleshooting convergence issues. This talk will be held Aug. 11 in room C404.

Monday 3 July 2017

Professor Trattner visits SocVis

We are glad to receive the visit of our collaborator Professor Christoph Trattner from Austria. He will be working with us from 5 to 12 of July 2017.

Monday 7 November 2016

Engineering Student Diego has earned a 2-month research at University of Texas at Austin

Engineering Student Vicente Iruretagoyena has earned a 2-month research visit to University of Texas at Austin. Congratulations and good luck!

Wednesday 13 July 2016

Professor Parra gave two keynote talks at futurePD and IFUP workshops

Professor Parra gave a keynot talk on FUTUREPD – THE FUTURE OF PERSONAL DATA and on IFUP: Workshop on Multi-dimensional Information Fusion for User Modeling and Personalization during his visit to Canada.

Monday 9 May 2016

Professor Parra introduces Moodplay in the Chilean news

EMOL - La Tercera - Diario Financiero - Ingeniería PUC

Wednesday 9 March 2016

Prof. Chaoli Wang gave talk about the Role of Graphs in Scientific Visualization

Prof. Chaoli Wang from University of Notre Dame, USA gave a talk about The Role of Graphs in Scientific Visualization: From Visual interface to Analytics Tool. More information

Friday 4 March 2016

Diana Hu from Verizon onCue gave a talk about recommendation systems.

Diana Hu, director of Data Science, Verizon on Cue gave a talk about recommendation systems in Verizon onCue. More information

Tuesday 10 November 2015

Engineering Student Matias has earned a 2-month research at University of Texas at Austin

Engineering Student Matias has earned a 2-month research visit to University of Texas at Austin. Matias was selected 1st among 25 students, congratulations and good luck!

Tuesday 10 November 2015

Professor Denis Parra earned a 3-year grant from Chilean Research Agency Conicyt

Professor Denis Parra earned a 3-year grant from Chilean Research Agency Conicyt for research on the intersection between HCI + Recommender Systems. The project is called "Dealing with Information Overload Leveraging Intelligent User Interfaces for Recommender Systems"

Monday 9 November 2015

Professor Leandro Balby-Marinho is a co-author of the best paper award at the ACM RecSys 2015

Professor Leandro Balby-Marinho is a co-author of the best paper award at the ACM RecSys 2015 conference with the article "Context-Aware Event Recommendation in Event-based Social Networks" available at http://dl.acm.org/citation.cfm?id=2800187

Friday 24 July 2015

Professor Parra will visit Notre Dame in January of 2016

Funding from PUC was granted to Prof. Parra for a 1-month academic visit to Prof. Chaoli Wang [http://www3.nd.edu/~cwang11/about.html] from Notre Dame in order to collaborate in Visual approaches for Graph-Based Recommender Systems.

Thursday 23 July 2015

2 papers accepted in Recsys 2015

We have two papers accepted at the ACM RecSys 2015 conference. "Good Times Bad Times: A Study on Recency Effects in Collaborative Filtering for Social Tagging"[pre-print pdf] and "Are Real-World Place Recommender Algorithms Useful in Virtual World Environments?" [pre-print pdf].

Wednesday 1 July 2015

Journal paper submitted to the Computer Communications journal has been accepted

Our Journal paper submitted to the Computer Communications journal has been accepted! Check later for updates on it, "Twitter in Academic Events: A Study of Temporal Usage, Communication, Sentimental and Topical Patterns in 16 Computer Science Conferences"

Monday 29 June 2015

Our two papers submitted to ACM RecSys 2015 have been accepted

Our two papers submitted to ACM RecSys 2015 have been accepted: "Good Times Bad Times: A Study on Recency Effects in Collaborative Filtering for Social Tagging" and "Are Real-World Place Recommender Algorithms Useful in Virtual World Environments". See you in Vienna!

Tuesday 7 April 2015

Our project proposal has been granted

Our project proposal “Visualization and Recommendation of Large Image and Text Collections toward Effective Sensemaking" has been granted but Andrónico Luksic fund. P.I. Professor Chaoli Wang Link (University of Notre Dame) will collaborate with Co-PI Professor Denis Parra (PUC Chile) on this emerging research topic to make recommendations on large graphs, extending Prof. Wang's work on iGraph Link

Friday 27 March 2015

We are organizing the ACM SIGIR 2015 International Workshop

Our Workshop proposal at ACM SIGIR was accepted! We are organizing the International Workshop on Social Personalisation & Search co-located with ACM SIGIR 2015, see more details at http://socialcomputing.ing.puc.cl/sps2015/

Monday 23 January 2015

Two articles accepted on WWW 2015 Web Science track

Christoph Trattner got accepted two articles on WWW 2015 Web Science track and Denis has a workshop paper
See the papers below

Monday 26 January 2015

Journal article accepted for publication

Our article "User-controllable Personalization: A Case Study with SetFusion" submitted to the International Journal of Human-Computer Studies has been accepted for publication! Download the paper free for a limited time here

Monday 3 November 2014

Talk by Professor Denis Parra

Denis gives an Invited talk on Recommender Systems at the Chilean Computer Science Week. His slides are http://www.slideshare.net/denisparra/keynote-at-chilean-week-of-computer-science and information about his talk http://www.jcc2014.ucm.cl/en/

Tuesday 14 October 2014

Professor starts his ERCIM fellowship at NTNU

Chris starts his ERCIM fellowship at NTNU (Norwegian University of Science and Technology), he will continue collaborating from Trondheim!

Monday 15 September 2014

1st International Workshop at ACM

Chris, Leandro and Denis have successfully co-organized the 1st International Workshop on Social Personalization colocated at ACM Hypertext 2014. Check more details here: http://columbus.exp.sis.pitt.edu/sp2014/


People

Faculty



Graduate Students


Undergraduate Students


Advisory Comittee


Collaborators


Publications

pyRecLab: A Software Library for Quick Prototyping of Recommender Systems

Sepulveda, G; Dominguez, V; Parra, D. RecSys 2017 posters.
PDF available


Comparing Neural and Attractiveness-based Visual Features for Artwork Recommendation

Domínguez, V; Messina, P; Parra, D; Mery, D; Trattner, C; Soto, A. Proceedings of the 2nd Workshop on Deep Learning for Recommender Systems.
PDF available


Towards a Recommender System for Undergraduate Research

del-Rio, F; Parra, D; Kuzmicic, J.; Svec, E. RecSys 2017 posters.
PDF available


Monitoring obesity prevalence in the US through bookmarking activities in online food portals

Trattner, C., Parra, D., & Elsweiler, D. (2017). Monitoring obesity prevalence in the US through bookmarking activities in online food portals. PloS one, 12(6), e0179144.
PDF available


Scalable Exploration of Relevance Prospects to Support Decision Making

Workshop IntRS 2016, RecSys 2016
PDF available


Understanding the Impact of Weather for POI Recommendations

Workshop RecTour 2016, RecSys 2016
PDF available


Interactive recommender systems: a survey of the state of the art and future research challenges and opportunities

He, C.; Parra, D.; and Verbert, K. Expert Systems with Applications. 2016.
PDF Available


Moodplay: Interactive Mood-based Music Discovery and Recommendation.

Andjelkovic, I.; Parra, D.; and O'Donovan, J. In Proceedings of the UMAP Conference, 2016. ACM
PDF Available


Recommending Sellers to Buyers in Virtual Marketplaces Leveraging Social Information

Eberhard, L. and Trattner, C.: Recommending Sellers to Buyers in Virtual Marketplaces Leveraging Social Information, In Proceedings of the ACM 2016 International Conference on World Wide Web Companion (WWW 2016), ACM, New York, NY, USA, 2016.


Big Data Analytics in the Social and Ubiquitous Context, Lecture Notes in Artificial Intelligence

Atzmueller, M., Chin, A., Janssen, F., Schweizer, I. and Trattner, C. (Eds.): Big Data Analytics in the Social and Ubiquitous Context, Lecture Notes in Artificial Intelligence, Vol. 9546, Springer, 2016.
PDF available


Studying Food Consumption and Production Patterns on the Web

Trattner, C., Kusmierczyk, T., Norvag, K.: FOODWEB – Studying Food Consumption and Production Patterns on the Web, ERCIM NEWS (104), 2016
PDF available


Activation Processes in Human Memory to Predict the Use of Tags in Social Bookmarking Systems

Trattner, C., Kowald, D., Seitlinger, P., Kopeinik, S. and Ley, T.: Modeling Activation Processes in Human Memory to Predict the Use of Tags in Social Bookmarking Systems, Journal of Web Science, 2016.
PDF available


Interactive recommender systems: a survey of the state of the art and future research challenges and

Interactive recommender systems: a survey of the state of the art and future research challenges and opportunities. He, C.; Parra, D.; and Verbert, K. Expert Systems with Applications, . 2016.
PDF available


Visualization and Recommendation of Large Image and Text Collections Toward Effective Sensemaking

Visualization and Recommendation of Large Image and Text Collections Toward Effective Sensemaking. Gu, Y.; Wang, C.; Ma, J.; Nemiroff, R. J.; Kao, D. L.; and Parra, D. Information Visualization (in press), . 2016.
PDF available


Using QR codes to increase user engagement in museum-like spaces

Using QR codes to increase user engagement in museum-like spaces. Perez-Sanagustin, M.; Parra, D.; Verdugo, R.; Garcia-Galleguillos, G.; and Nussbaum, M. Computers in Human Behavior, . 2016.
PDF available


A study of temporal usage, communication, sentimental and topical patterns in 16 Computer Science co

Denis Parra, Christoph Trattner, Diego Gómez, Matías Hurtado, Xidao Wen, Yu-Ru Lin, Twitter in academic events: A study of temporal usage, communication, sentimental and topical patterns in 16 Computer Science conferences, Computer Communications, Available online 11 July 2015, ISSN 0140-3664, http://dx.doi.org/10.1016/j.comcom.2015.07.001 Keywords: Twitter; Academic conferences; Evolution over time; Topic models; Sentiment analysis
pre-print PDF


Towards Improving Top-N Recommendation by Generalization of SLIM

Santiago Larraín, Denis Parra, Alvaro Soto, "Towards Improving Top-N Recommendation by Generalization of SLIM" short paper accepted at ACM RecSys
pre-print pdf


Language, Twitter and Academic Conferences

Ruth García, Diego Gómez, Denis Parra, Christoph Trattner, Andreas Kaltenbrunner, Eduardo Graells-Garrido "Language, Twitter and Academic Conferences" in Proceedings of ACM Conference in Hypertext and Social Media 2015, Cyprus.
PDF available


Are Real-World Place Recommender Algorithms Useful in Virtual World Environments?

Marinho, L., Trattner, C. and Parra, D.: Are Real-World Place Recommender Algorithms Useful in Virtual World Environments? on ACM RecSys 2015
pre-print pdf


Good Times Bad Times: A Study on Recency Effects in Collaborative Filtering for Social Tagging

Larrain, S., Parra, D., Trattner, C., Graells-Garrido, E., Norvag, K.: Good Times Bad Times: A Study on Recency Effects in Collaborative Filtering for Social Tagging on ACM RecSys 2015
pre-print pdf


Dynamic Topic Modelling Tutorial published

Student Matías Hurtado has released a tutorial about DTM (Dynamic Topic Modelling). In this tutorial you can learn how to classify big data by topics over a timespan using DTM. Based on Blei, D. M., & Lafferty, J. D. (2006, June). Dynamic topic models. In Proceedings of the 23rd international conference on Machine learning (pp. 113­120). ACM.
PDF available


Identifying Relevant Messages in a Twitter-based Citizen Channel for Natural Disaster Situations

Cobo, A., Parra, D., Navón, J.: Identifying Relevant Messages in a Twitter-based Citizen Channel for Natural Disaster Situations, In Proceedings of the The 3rd International Workshop on Social Web for Disaster Management (SWDM 2015), co-located at WWW 2015
PDF available | Dataset available


Temporal Patterns in Online Food Innovation

Kusmierczyk, T., Trattner, C and Norvag, K.: Temporal Patterns in Online Food Innovation, In Proceedings of the ACM 2015 International Conference on World Wide Web Companion (WWW 2015), ACM, New York, NY, USA, 2015
PDF available


Temporality in Online Food Recipe Consumption and Production

Kusmierczyk, T., Trattner, C and Norvag, K.: Temporality in Online Food Recipe Consumption and Production, In Proceedings of the ACM 2015 International Conference on World Wide Web Companion (WWW 2015), ACM, New York, NY, USA, 2015
PDF available


User-controllable Personalization: A Case Study with SetFusion

Denis Parra, Peter Brusilovsky, User-controllable personalization: A case study with SetFusion, Int. J. Human-Computer Studies
PDF avaible


Recommending Items in Social Tagging Systems Using Tag and Time Informations

Lacic, E., Kowald, D., Seitlinger, P., Trattner, C. and Parra, D.: Recommending Items in Social Tagging Systems Using Tag and Time Informations, In Proceedings of the 1st international Workshop Social Personalization (SP 2014) at ACM Hypertext, Santiago, Chile, 2014
PDF available


Twitter in Academic Conferences: Usage, Networking and Participation over Time

Wen, X., Lin, Y., Trattner, C. and Parra, D.: Twitter in Academic Conferences: Usage, Networking and Participation over Time, In Proceedings of the ACM 2014 International Conference in Hypertext and Social Media (Hypertext 2014), ACM, New York, USA, 2014
PDF available



Projects

Observatorio Digital de Delincuencia en Chile: Un sistema inteligente de apoyo a la industria automo

Associate Researcher in Fondef IDeA Project ID16I10222 “Observatorio Digital de Delincuencia en Chile: Un sistema inteligente de apoyo a la industria automotriz chilena”. CONICYT.


Dealing with information overload using intelligent recommender system interfaces.

Fondecyt 11150783: Dealing with information overload using intelligent recommender system interfaces. 2016-2018
Project web page


Visualization and Recommendation of Large Image and Text Collections toward Effective Sensemaking

Project “Visualization and Recommendation of Large Image and Text Collections toward Effective Sensemaking", Andrónico Luksic Collaboration Grant proposal. PI: Prof. Chaoli Wang (University of Notre Dame), Co-PI: Prof Denis Parra (PUC Chile)


Nucleo milenio research center for entrepreneurial strategy under uncertainty (NS130028)


Project web page



Software and Demos


Contact Us

Name Email Comments

Mailing address

Denis Parra
Vicuna Mackenna 4860
Edificio San Agustin, 4to piso
Macul 7820436
Santiago
Chile