20 Feb 2017

Two demos will be presented in the WWW 2017 conference:
"Exploring polarized consumption of news online," by Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Michael Mathioudakis, and
"AncestryAI: a tool for exploring computationally inferred family trees," by Eric Malmi, Marko Rasa, and Aristides Gionis.

15 Feb 2017

The tutorial "Polarization on social media", by Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Michael Mathioudakis, will be presented in the AAAI International Conference on Web and Social Media (ICWSM) 2017.

13 Feb 2017

Kiran Garimella is presenting his work in three universities in the UK:
Kings College London, 13 Feb 2017, hosted by Nishanth Sastry,
Queen Mary University London, 14 Feb 2017, hosted by Hamed Haddadi, and
University of Edinburgh, 16 Feb 2017, hosted by Walid Magdy.

13 Feb 2017

The paper "Reducing controversy by connecting opposing views," received the WSDM 2017 best student paper award.

13 Feb 2017

Two papers accepted as posters in the WWW 2017 conference:
"Media attention to science," by Kiran Garimella and Han Xiao, and
"Understanding international migration using tensor factorization," by Hieu Nguyen and Kiran Garimella.

11 Feb 2017

The paper "On the troll-trust model for edge sign prediction in social networks," by Géraud Le Falher, Nicolo Cesa-Bianchi, Claudio Gentile, and Fabio Vitale, was accepted in AISTATS 2017.

6 Feb 2017

Kiran Garimella is attending WSDM 2017 and presenting the paper "Reducing controversy by connecting opposing views," which was also nominated for best paper award. Here is a blogpost about the paper by Kiran.

12 Jan 2017

The paper "Finding dynamic dense subgraphs" by Polina Rozenshtein, Nikolaj Tatti, and Aristides Gionis, will appear in TKDD journal.

23 Dec 2016

Three papers of our group have been accepted to SDM 2017:
"Discovering bursts revisited: guaranteed optimization of the model parameters", by Nikolaj Tatti,
"Finding low-tension communities", by Esther Galbrun, Behzad Golshan, Aristides Gionis, and Evimaria Terzi, and
"Community-aware network sparsification", by Aristides Gionis, Polina Rozenshtein, Nikolaj Tatti, and Evimaria Terzi.

8 Dec 2016

Albert Merlin Arockiasamy presented his MS thesis titled "A combinatorial approach to role discovery". A related paper will be presented next week in ICDM 2016.

7 Dec 2016

Kiran Garimella received a student grant for attending WSDM 2017.

7 Nov 2016

The paper "Modeling Urban Behavior by Mining Geotagged Social Data" (pdf), with Emre Çelikten, Géraud Le Fahler, and Michael Mathioudakis was accepted for publication in the IEEE Transactions on Big Data, Special Issue on Urban Computing, 2016.

4 Nov 2016

Preethi Lahoti talks about her experience in the data mining group and her summer internship in Nokia Bell Labs.

1 Nov 2016

Kiran Garimella, Michael Mathioudakis, and Clemens Westrup gave talks in this year's PyCon Finland.
Kiran and Michael's talk was on using networkX to visualize interactions on twitter. The talk described how they produced plots that appear in recent work on polarization on social media (slides).
Clemens presented material from his Masters thesis and specifically how he used machine-learning libraries in python to tag text in job postings (slides).
More information on Michael's post.

21 Oct 2016

Polina Rozenshtein received a Nokia scholarship grant. Congratulations Polina.

20 Oct 2016

The paper "Reducing controversy by connecting opposing views", with Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Michael Mathioudakis, was accepted in WSDM 2017.

19 Sep 2016

Han Xiao, Polina Rozenshtein, and Nikolaj Tatti are attending the ECML PKDD 2016 conference, presenting 4 papers, and 1 tutorial.

16 Sep 2016

The paper "A combinatorial approach to role discovery", with Merlin Arockiasamy, Nikolaj Tatti, and Aristides Gionis was accepted in ICDM 2016.

1 Sep 2016

Fabio Vitale is joining the data mining group from University of Lille and INRIA Lille. Welcome Fabio!

1 August 2016

An extended version of the paper "Backbone discovery in traffic networks", with Sanjay Chawla, Kiran Garimella, Aristides Gionis, and Dominic Tsang, was published in the International Journal of Data Science and Analytics.

25 July 2016

Nikos Parotsidis, from University of Rome "Tor Vergata", is visiting the data mining group for two months.

22 July 2016

The paper "Extracting skill endorsements from personal communication data", with Darshan M.S., Gianmarco De Francisci Morales, and Aristides Gionis was accepted in CIKM 2016.

3 July 2016

Promotional videos for our group's KDD papers: "Reconstructing an epidemic over time", and "DopeLearning: A computational approach to rap lyrics generation". Enjoy!

23 June 2016

Two papers of our group have been accepted to the conference track of ECML PKDD 2016:
"Discovering topically and temporally coherent events in interaction networks", by Han Xiao, Polina Rozenshtein and Aristides Gionis, and
"Temporal PageRank", by Polina Rozenshtein and Aristides Gionis.
Two more will appear in the journal track of the conference.

15 June 2016

Han Xiao finished his MS thesis in the University of Helsinki and is starting as a new PhD student in the Aalto data mining group.

7 June 2016

Clemens Westrup was selected to represent Aalto in the IBM Best Student Recognition Event 2016, which will take place in Hursley, UK.

6 June 2016

Preethi Lahoti has started an internship in Bell Labs Dublin.

1 June 2016

Eric Malmi has started an internship in Google Zurich.

26 May 2016

Igor Andriushchenko, Mahmoud Khodier, and Yangjun Wang have given their Masters thesis presentations.

18 May 2016

The paper "Reconstructing an epidemic over time", by Polina Rozenshtein, Aristides Gionis, B. Aditya Prakash, and Jilles Vreeken will be presented as a poster in KDD 2016.

18 May 2016

The paper "DopeLearning: A computational approach to rap lyrics generation", by Eric Malmi, Pyry Takala, Hannu Toivonen, Tapani Raiko, and Aristides Gionis will be presented in the Applied Data Science track of KDD 2016.

17 May 2016

Eric Malmi is attending the ICWSM 2016 conference, and presenting the paper "You are what apps you use: Demographic prediction based on user's apps" (co-authored with Ingmar Weber).

16 May 2016

Cristina Muntean from CNR is visiting the data mining group.

10 May 2016

Kiran Garimella has started an internship at Amazon in Bangalore.

4 May 2016

A new Northernbytes blogpost on "Using Instagram images to monitor public health", presenting a recent paper by Kiran Garimella, Abdulrahman Alfayad, and Ingmar Weber that will appear in CHI 2016.

20 Apr 2016

The paper "Streaming similarity self-join" (preprint), with Gianmarco De Francisci Morales and Aristides Gionis will appear in VLDB 2016.

18 Apr 2016

Evimaria Terzi from Boston University is visiting the data mining group with a Nokia visiting professor scholarship.

18 Apr 2016

Saskia Metzler from MPI is visiting the data mining group.

15 Apr 2016

Michael Mathioudakis is attending the WWW 2016 conference and presenting a demo on exploring urban activity.

11 Apr 2016

Mauro Coletto from IMT Lucca School for Advanced Studies is visiting the data mining group.

25 Mar 2016

The paper "Top-k overlapping densest subgraphs" by Esther Galbrun, Aristides Gionis, and Nikolaj Tatti will appear in Data Mining and Knowledge Discovery (ECML PKDD 2016 journal track).

24 Mar 2016

The paper "Quote RTs on twitter: usage of the new feature for political discourse" by Munmun De Choudhury, Kiran Garimella, and Ingmar Weber was accepted as a short paper in Web Science 2016.

4 Mar 2016

The paper "You are what apps you use: Demographic prediction based on user's apps" by Eric Malmi and Ingmar Weber will be presented in ICWSM 2016. The work was featured in Washington Post.

15 Feb 2016

Aleksi Kallio is dending his PhD thesis "Sampling from scarcely defined distributions: Methods and applications in data mining".

12 Feb 2016

Emre Çelikten, Géraud Le Fahler, and Michael Mathioudakis will present a demo at WWW 2016 on "Exploring Urban Activity using Social Web Traces".

21 Dec 2015

The paper "Social media image analysis for public health," by Kiran Garimella, Abdulrahman Alfayad, and Ingmar Weber will be presented in CHI 2016.

21 Dec 2015

Our demo on "Exploring controversy on twitter," by Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Michael Mathioudakis will be presented in CSCW 2016.

21 Dec 2015

The paper "Discovering the network backbone from traffic activity data," by Sanjay Chawla, Kiran Garimella, Aristides Gionis, and Dominic Tsang will appear in PAKKD 2016.

9 Nov 2015

Michael Mathioudakis and Nikolaj Tatti will attend ICDM 2015 next week. Michael will present a paper on absorbing random-walk centrality, and Nikolaj on "Hierachies in directed networks".

6 Nov 2015

Rap lyrics generator tool, DeepBeat is out. By Eric Malmi & co.

6 Nov 2015

Kiran Garimella reports on CIKM 2015.

3 Nov 2015

Orestis Kostakis received a Nokia scholarship grant.

14 Oct 2015

The paper "Quantifying controversy in social media", with Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Michael Mathioudakis, was accepted in WSDM 2016. You may already read a report on our results at MIT Tech Review.

10 Oct 2015

Kiran Garimella wrote a blogpost on our new CIKM 2015 paper on "Scalable facility location for massive graphs on pregel-like systems."

29 Sep 2015

Preethi Lahoti and Albert Merlin Arockiasamy, both Masters honours students, are joining the data mining group.

2 Sep 2015

Yangjun Wang and Han Xiao are starting their master thesis projects in the data mining group.

18 Aug 2015

Anis Nasir from KTH is starting an internship in our group.

14 Aug 2015

Polina Rozenshtein attended the Maldago summer school on streaming algorithms, in Aarhus.

12 Aug 2015

"Who let the DAGS out," a new blog post by Eric Malmi, with results and reflections on our upcoming DMKD paper.

8 Aug 2015

Two papers from our group are accepted to ICDM 2015:
"Hierachies in directed networks", by Nikolaj Tatti; and
"Absorbing random-walk centrality: Theory and algorithms", by Charalampos Mavroforakis, Michael Mathioudakis, and Aristides Gionis.

10 July 2015

One paper accepted to CIKM 2015 conference: "Scalable facility location for massive graphs on Pregel-like systems", by Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Mauro Sozio.

29 Jun 2015

Kiran Garimella will be a summer intern in linkedIn.

26 June 2015

Fabio Vitale from the University of Lille is visiting the Data Mining group.

22 June 2015

Open positions in the Data Mining group.

22 June 2015

Gianmarco De Francisci Morales is visiting the Lab of Communicaiton Networks (LCN) in KTH.

17 June 2015

The project Network structure from group response (Nestor) received funding from the Academy of Finland.

16 Jun 2015

Starting July, Eric Malmi will be a summer intern in QCRI.

15 Jun 2015

Michael Mathioudakis is visiting the MAGNET team in the University of Lille.

4 Jun 2015

Evimaria Terzi received a Nokia Visiting Professor Scholarship and will visit our group in Spring 2016.

4 Jun 2015

Three papers with authors in our group are accepted in ECML PKDD 2015:
"A kernel-learning approach to semi-supervised clustering with relative distance comparisons", with Ehsan Amid, Aristides Gionis, and Antti Ukkonen,
"Maintaining sliding-window neighborhood profiles in interaction networks", with Rohit Kumar, Toon Calders, Aristides Gionis, and Nikolaj Tatti,
"The blind leading the blind: Network-based location estimation under uncertainty", with Eric Malmi, Arno Solin, and Aristides Gionis.

1 Jun 2015

Lots of mobility in the data mining group during summer. Polina Rozenshtein is interning in MPI and Orestis Kostakis in Nokia. Behzad Golshan is visiting us from Boston University, and Sidharth Gupta found his way in Aalto while moving from IIT Kanpur to CMU. And three Aalto students, Emre Çelikten, Darshan M.S., and Marko Rasa, are doing summer internships.

30 May 2015

Gianmarco De Francisci Morales gave a keynote in the EVAM stream processing event.

29 May 2015

Northern bytes blog post on apartment prices in Helsinki.

27 May 2015

Julien Blegean presented his Masters thesis: "Twitter the Rioter: Analyzing roles through a protest on social media. What was your part during the 2014 Ferguson riots?"

25 May 2015

Northern bytes blog post on discovering social circles in twitter. Work based on the recent ICWSM 2015 paper.

25 May 2015

The paper "Public transport, urban activity and housing prices", by Michael Mathioudakis and Indre Zliobaite will appear in MUD 2015 (Mining Urban Data, ICML workshop).

22 May 2015

The paper "Efficient online evaluation of big data stream classifiers", by Albert Bifet, Gianmarco De Francisci Morales, Jesse Read, Bernhard Pfahringer, and Geoff Holmes was accepted in KDD 2015.

10 May 2015

Are you working on algorithms for evolving networks? Consider submitting a paper on the upcoming special issue of Internet Mathematics.

30 April 2015

Tutorial on "Dense subgraph discovery" with Aristides Gionis and Babis Tsourakakis will be presented in KDD 2015.

30 April 2015

The paper "Multiview triplet embedding: learning attributes in multiple maps", by Ehsan Amid and Antti Ukkonen, was accepted to ICML 2015.

22 April 2015

The data mining group joins the Revolution of Knowledge project, funded by Tekes.

17 April 2015

Short paper accepted to SIGIR 2015: "Subsequence search in event-interval sequences", by Orestis Kostakis and Aristides Gionis.

12 March 2015

Gianmarco De Francisci Morales is joining the data mining group as a postdoc (nationalities++).

11 March 2015

Two papers from our group will be presented in the ICWSM 2015 conference, in Oxford: "Where is the Soho of Rome? Measures and algorithms for finding similar neighborhoods in cities", by Géraud Le Fahler, Michael Mathioudakis, and Aristides Gionis, and "Covering the egonet: A crowdsourcing approach to social circle discovery on twitter" by Karmen Dykstra, Jefrey Lijffijt, and Aristides Gionis (coauthors+=3).

14 Feb 2015

Two papers accepted in the Data Mining and Knowledge Discovery journal: "Beyond rankings: comparing directed acyclic graphs", by Eric Malmi, Nikolaj Tatti and Aristides Gionis, and "Finding the longest common sub-pattern in sequences of temporal intervals", by Orestis Kostakis and Panagiotis Papapetrou.

26 Jan 2015

The paper "Density-friendly graph decomposition", by Nikolaj Tatti and Aristides Gionis, was accepted to WWW 2015.

30 Dec 2014

Opportunities for summer internships in the ICS department, with a number of projects with the data mining group.

17 Dec 2014

Polina Rozenshtein and Orestis Kostakis receive a funded position in the Helsinki doctoral education network HICT.

10 Dec 2014

Northern bytes has now a new look and a new website.

25 Nov 2014

Blog post on the master thesis of Géraud Le Falher about finding similar neighborhoods across cities.

29 Oct 2014

Aalto SCI posted "Data miner sets off to conquer Berlin", about Eric Malmi's work

28 Oct 2014

Eric Malmi received a Nokia scholarship grant.

20 Oct 2014

The paper "Bump hunting in the dark: Local discrepancy maximization on graphs", authored by Aristides Gionis, Michael Mathioudakis, and Antti Ukkonen, was accepted at ICDE 2015.

25 Sep 2014

Kiran Garimella posted about his latest SocInfo 2014 paper on romantic relationship breakups in twitter.

21 Sep 2014

Nikolaj Tatti gave a tutorial in ECML PKDD 2014 on information theory, MDL, and statistics.

16 Sep 2014

Polina Rozenshtein received the best student paper award in ECML PKDD 2014.

15 Sep 2014

Seven papers co-authored by members of the data mining group will be presented in ECML PKDD 2014.

4 Sep 2014

Eric Malmi gave an interview in the Finnish national radio station for his study on Finnish rap. Summary of the story in Northern bytes. The original post (in Finnish) in Eric's blog.

1 Sep 2014

Eric Malmi won the Falling Walls Lab Turku competition, and he will represent Finland in the Falling Walls Lab conference in Berlin.

25 Aug 2014

Polina Rozenshtein gave a presentation in KDD for the paper "Event detection in activity networks".

22 Aug 2014

Kiran Garimella wrote a blog post about his recent ACM Hypertext paper.

15 Aug 2014

Polina Rozenshtein and Kiran Garimella have obtained student travel awards to KDD 2014 and Hypertext 2014, resp.

11 Aug 2014

Géraud Le Falher and Polina Rozenshtein will defend their master theses on Thu, Aug 14.

10 Aug 2014

Starting Northern bytes, the data mining group's blog.