Data mining group
5 Nov 2019
Martino Ciaperoni started as a new PhD student in the data mining group joining in the MLDB Academy of Finland project.
6 Sep 2019
Polina Rozenshtein and Aris Gionis presented the tutorial "Mining temporal networks" in KDD 2019 and the EDBT Summer School 2019.
3 Sep 2019
Aris Gionis presented the tutorial "Polarization on social media" in the Data Science Summer School 2019 in Pisa.
12 Jun 2019
The project "Machine learning meets Database Systems (MLDB)," received funding from the Academy of Finland. The consortium consists of the Data Mining group in Aalto, and the research group of prof. Michael Mathioudakis in the University of Helsinki.
15 May 2019
Guangyi Zhang is starting as a research assistant in the data mining group. Welcome Guangyi!
15 May 2019
Three summer interns in the data mining group in summer 2019: Ananth Mahadevan, Sachith Pai, and Sijing Tu. Welcome all!
21 Apr 2019
Marta Kołczyńska from the Institute of Political Studies of the Polish Academy of Sciences will be visiting our group during spring 2019. The goal is to develop cross-disciplinary collaboration in computational social science.
20 Mar 2019
Polina Rozenshtein received an Aalto School of Science dissertation award (photo). Congratulations Polina!
18 Mar 2019
Polina Rozenshtein is starting as a data scientist in Nordea. Congratulations Polina!
21 Jan 2019
The paper "Reconciliation k-median: Clustering with non-polarized representatives", by Bruno Ordozgoiti and Aristides Gionis, will be presented in the Web Conference 2019.
21 Jan 2019
Polina Rozenshtein discusses her recent work on algorithmic fairness and bias.
3 Dec 2018
Bruno Ordozgoiti joined the data mining group as postdoc. Welcome Bruno!
10 Nov 2018
Polina Rozenshtein defended successfully her PhD dissertation, with opponent Professor Leman Akoglu. Congratulations Polina! (photo from the defense.)
10 Nov 2018
Esther Galbrun moved to a new postdoctoral research position in the Data science and evolution group of Helsinki University with prof. Indre Zliobaite. Congratulations Esther!
8 Nov 2018
Polina Rozenshtein and Han Xiao received student travel awards to attend ICDM 2018. Congratulations Polina and Han!
5 Nov 2018
Antonis Matakos received a Nokia scholarship grant. Congratulations Antonis!
6 Sep 2018
Five papers of our group have been accepted at the
IEEE International Conference on Data Mining (ICDM) 2018:
"Tell me something my friends do not know: Diversity maximization in social networks",
by Antonis Matakos and Aristides Gionis,
"Robust cascade reconstruction by Steiner-tree sampling",
by Han Xiao, Cigdem Aslay, and Aristides Gionis,
"Finding events in temporal networks: Segmentation meets densest-subgraph discovery",
by Polina Rozenshtein, Francesco Bonchi, Aristides Gionis, Mauro Sozio, and Nikolaj Tatti,
"Explainable time series tweaking via irreversible and reversible temporal transformations",
by Isak Karlsson, Jonathan Rebane, Panagiotis Papapetrou, and Aristides Gionis,
and
"Maximizing the diversity of exposure in a social network",
by Cigdem Aslay, Antonis Matakos, Esther Galbrun, and Aristides Gionis.
Camera ready versions are coming soon!
4 Sep 2018
Kai Puolamäki started as an associate professor in the University of Helsinki. Congratulations Kai!
20 Aug 2018
Our paper "From acquaintance to best friend forever: robust and fine-grained inference of social-tie strengths", with Florian Adriaens, Tijl De Bie, Aris Gionis, Jefrey Lijffijt, and Polina Rozenshtein received a best paper award in the MLG 2018 workshop.
19 Aug 2018
Our tutorial Polarization on social media was presented in the KDD 2018 conference.
14 Aug 2018
The paper "Mining frequent patterns in evolving graphs", by Cigdem Aslay, Anis Nasir, Gianmarco De Francisci Morales, and Aris Gionis was accepted at the CIKM 2018 conference.
3 Aug 2018
Florian Adriaens, from Ghent University, is visiting the data mining group for an internship.
20 Jun 2018
PhD defense of Eric Malmi, with opponent Professor David Gleich (photo from the defense).
10 Jun 2018
The paper "From acquaintance to best friend forever: robust and fine-grained inference of social-tie strengths", by Florian Adriaens, Tijl De Bie, Aris Gionis, Jefrey Lijffijt, and Polina Rozenshtein was accepted at the MLG 2018 workshop of KDD 2018.
4 Jun 2018
Suhas Muniyappa received 6th place in the PACE 2018 challenge, track A for his implementation of the Ericsson-Monma-Veinott algorithm for the Steiner-tree problem.
21 May 2018
Giulia Preti, from the University of Trento is visiting the data mining group for a summer internship.
14 May 2018
Edoardo Galimberti, from the University of Turin and ISI Foundation, is visiting the data mining group for a summer internship.
9 May 2018
Our work on filter bubbles in Nyt (in Finnish).
27 Apr 2018
Eric Malmi is presenting the paper "Computationally inferred genealogical networks uncover long-term trends in assortative mating" in the Web Conference 2018.
27 Apr 2018
Michael Mathioudakis and Gianmarco De Francisci Morales are listed as best reviewers of the Web Conference 2018. Congratulations!
26 Apr 2018
Our work on filter bubbles in Le Monde (in French).
25 Apr 2018
Kiran Garimella is presenting the paper "Political discourse on social media: Echo chambers, gatekeepers, and the price of bipartisanship" in the Web Conference 2018.
24 Apr 2018
Aris Gionis is giving a keynote on "Mining temporal networks" in the workshop Online social networks and media: Network properties and dynamics (ONSED), held in conjunction with the the Web Conference 2018.
23 Apr 2018
Our tutorial Polarization on social media is presented in the Web Conference 2018.
23 Mar 2018
Orestis Kostakis, PhD 2017, received an Aalto School of Science dissertation award. Congratulations Orestis!
12 Mar 2018
Cigdem Aslay joined the data mining group as postdoc. Welcome Cigdem!
5 Mar 2018
Panagiotis Papapetrou, Jonathan Rebane, and Nikos Parotsidis are visiting the data mining group.
28 Feb 2018
Eric Malmi is starting as an engineer in Google, Zurich. Congratulations Eric!
28 Feb 2018
Kiran Garimella is starting as a postdoc in the data science lab in EPFL. Congratulations Kiran!
16 Feb 2018
Eric Malmi attended the 9th Demographic Conference of "Young Demographers", and received the best paper award for the paper "Computationally inferred genealogical networks uncover long-term trends in assortative mating".
9 Feb 2018
PhD defense of Sanja Scepanovic, with opponent Professor Fosca Giannotti (photo from the defense).
7 Feb 2018
PhD defense of Kiran Garimella, with opponent Professor Dino Pedreschi (photo from the defense).
3 Feb 2018
YLE (Finnish Broadcasting Company) published an article about the role and impact of social media to democracy (in Finnish), featuring the work of Kiran Garimella.
1 Feb 2018
Kai Puolamäki, Emilia Oikarinen, and Andreas Henelius have joined the data mining group. Kai is a new professor of practice in the Department of Computer Science, and Emilia and Andreas are postdocs under his supervision. Thrilled with the merge!
1 Feb 2018
Bruno Ordozgoiti, from Universidad Politénica de Madrid is visiting the data mining group for 6 months.
15 Jan 2018
Suhas Muniyappa started as a new PhD student in the data mining group joining in the "Adaptive and intelligent data" Academy of Finland project.
5 Jan 2018
Sanja Scepanovic started as a data scientist and business developer in the startup ICEYE. Congratulations Sanja!
22 Dec 2017
Two papers of our group have been accepted at the
WWW 2018 conference:
"Computationally inferred genealogical networks uncover long-term trends in assortative mating",
by Eric Malmi, Arno Solin, and Aristides Gionis, and
"Political discourse on social media: Echo chambers, gatekeepers, and the price of bipartisanship",
by Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Michael Mathioudakis.
21 Dec 2017
The project "Adaptive and intelligent data", received funding from the Academy of Finland. The consortium consists of the Data Mining group in Aalto, and the Collaborative Networking group, led by professor Jussi Kangasharju in the University of Helsinki.
20 Dec 2017
The paper "Reconstructing a cascade from temporal observations", by Han Xiao, Polina Rozenshtein, Nikolaj Tatti, and Aristides Gionis was accepted at the SDM 2018 conference.
8 Dec 2017
Our work on "Balancing information exposure in social networks" and filter bubbles was covered by Aalto news, Science newsline, Innovation Toronto, E&T, Digital trends, and other news outlets.
27 Nov 2017
Sanja Scepanovic and Polina Rozenshtein participated in the Junction 2017 hackathon with the team re(n)laks, and won the first prize in track SPACE. Congratulations Sanja and Polina!
27 Nov 2017
Antonis Matakos, Han Xiao, and Emre Çelikten, participated in the Junction 2017 hackathon, track mobility - Finnair, with the team smart campaign.
27 Nov 2017
Video of the NIPS 2017 paper on "Balancing information exposure in social networks". Video created by Kiran Garimella.
15 Nov 2017
Eric Malmi is attending the European Symposium in Computational Social Science conference presenting the paper "Computationally inferred genealogical networks uncover long-term trends in assortative mating".
12 Nov 2017
Esther Galbrun joined the data mining group in a postdoc position. Welcome Esther!
6 Nov 2017
Eric Malmi is attending the CIKM 2017 conference presenting the paper ""Active network alignment: A matching-based approach".
2 Oct 2017
Nikolaj Tatti has moved to a new position in F-secure. All the best Nikolaj!
1 Oct 2017
Han Xiao is visiting ISI Foundation for an internship with Francesco Bonchi.
25 Sep 2017
Cigdem Aslay from ISI Foundation is visiting the data mining group.
6 Sep 2017
The paper "Balancing information exposure in social networks", with Kiran Garimella, Aristides Gionis, Nikos Parotsidis, and Nikolaj Tatti, was accepted to NIPS 2017. Here is the arxiv version.
6 Sep 2017
The paper "Quantifying controversy on social media", with Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Michael Mathioudakis, was accepted to the ACM Transactions on Social Computing (TSC).
31 Aug 2017
Eric Malmi received a travel grant to attend CIKM 2017. Congratulations Eric!
22 Aug 2017
Antonis Matakos is starting his PhD in the data mining group. Welcome Antonis!
21 Aug 2017
Pinar Karagoz, from METU, is visiting our group.
10 Aug 2017
Frederick Ayala-Gómez, from Eötvös Loránd University, is visiting our group for six months.
7 Aug 2017
Two papers to be presented in the
CIKM 2017 conference:
"Fully dynamic algorithm for top-k densest subgraphs,"
by Anis Nasir, Gianmarco De Francisci Morales, Aristides Gionis, Sarunas Girdzijauskas, and
"Active network alignment: a matching-based approach,"
by Eric Malmi, Evimaria Terzi, and Aristides Gionis.
4 Aug 2017
Preethi Lahoti has moved from Aalto to start a PhD in MPI, with Gerhard Weikum. All the best, Preethi!
25 Jul 2017
Preethi Lahoti is attending the ASONAM 2017 conference in Sydney, presenting the paper "Finding topical experts in twitter via query-dependent personalized PageRank".
20 Jul 2017
Eric Malmi is giving a seminar in EPFL.
13 Jul 2017
Preethi Lahoti is attending the first ACM Europe Summer School on Data Science.
5 Jul 2017
Promotional video for the KDD paper: "Inferring the strength of social ties: a community-driven approach". Enjoy!
4 Jul 2017
Michael Mathioudakis is starting as an assistant professor at cnrs and insa lyon. Félicitations et bonne chance, Michael!
28 Jun 2017
The paper "The effect of collective attention on controversial debates on social media," by Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Michael Mathioudakis, received the best student paper award in Web Science 2017. Congratulations to our student, Kiran!
23 Jun 2017
The paper "The network-untangling problem: From interactions to activity timelines", by Polina Rozenshtein, Nikolaj Tatti, and Aristides Gionis was accepted in the ECML PKDD 2017 conference.
20 Jun 2017
Antti Hallavo has started his MS thesis project in the data mining group. Welcome Antti!
19 Jun 2017
Preethi Lahoti won a travel grant to attend the first ACM Europe Summer School on Data Science. Congratulations Preethi!
15 Jun 2017
Preethi Lahoti is presenting her MS thesis on "Learning ideological latent space in twitter".
12 Jun 2017
Kiran Garimella is doing a summer internship in University of British Columbia with professor Laks V.S. Lakshmanan.
9 Jun 2017
Polina Rozenshtein is attending Highlights of Algorithms 2017.
8 Jun 2017
Kiran Garimella is giving a seminar in EPFL.
5 Jun 2017
Polina Rozenshtein is doing a summer internship in ISI Foundation with Francesco Bonchi.
4 Jun 2017
Fabio Vitale is leaving Aalto to start a new postdoc in the University of Rome. All the best Fabio!
1 Jun 2017
Federica Calanca, from Sapienza University of Rome, is starting a summer internship in the data mining group. Welcome Federica!
26 May 2017
Orestis Kostakis defended successfully his PhD dissertation. Opponent was professor Joao Gama, from University of Porto. Congratulations Orestis!
22 May 2017
The paper "Discovering recurring activity in temporal networks", by Orestis Kostakis, Nikolaj Tatti, and Aristides Gionis was accepted in the Data Mining and Knowledge Discovery journal.
20 May 2017
The paper "Inferring the strength of social ties: a community-driven approach", by Polina Rozenshtein, Nikolaj Tatti, and Aristides Gionis was accepted in the KDD 2017 conference.
18 May 2017
The paper "Finding topical experts in twitter via query-dependent personalized PageRank", by Preethi Lahoti, Gianmarco De Francisci Morales, and Aristides Gionis, will be presented in the ASONAM 2017 conference.
16 May 2017
Kiran Garimella won the ICWSM science slam! Congratulations Kiran!
15 May 2017
Slides from our tutorial on "Polarization on social media", which was presented in the ICWSM 2017 conference.
10 May 2017
Sijing Tu is starting a summer internship in the data mining group. Welcome Sijing!
1 May 2017
Antonis Matakos from the University of Ioannina is visiting the data mining group for two weeks.
30 Apr 2017
Eric Malmi received two incentive grants for his PhD, one from Emil Aaltosen Säätiö and one from TES. Congratulations Eric!
28 Apr 2017
Four papers to be presented in the
Web Science 2017 conference:
"The effect of collective attention on controversial debates on social media," by Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, Michael Mathioudakis,
"Where could we go? Recommendations for groups in location-based social networks," by Frederick Ayala-Gómez, Bálint Daróczy, Michael Mathioudakis, Andras A. Benczur and Aristides Gionis,
"Factors in recommending contrarian content on social media," by
Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, Michael Mathioudakis, and
"Ad-blocking: A study on performance, privacy and counter-measures," by Kiran Garimella, Orestis Kostakis, Michael Mathioudakis.
23 Apr 2017
Matija Piškorec from the Ruđer Bošković Institute is visiting the data mining group for one month.
3 Apr 2017
The paper "Lagrangian relaxations for multiple network alignment", by Eric Malmi, Sanjay Chawla, and Aristides Gionis was accepted in the Data Mining and Knowledge Discovery journal.
18 Mar 2017
AncestryAI algorithm traces your family tree back more than 300 years
15 Mar 2017
Three short papers to be presented in the
ICWSM 2017 conference:
"A motif-based approach for identifying controversy," by
Mauro Coletto, Kiran Garimella, Aristides Gionis, and Claudio Lucchese,
"The ebb and flow of controversial debates on social media," by
Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, and Michael Mathioudakis, and
"A long-term analysis of polarization on twitter,"
by Kiran Garimella and Ingmar Weber.
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 Aug 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 Jul 2016
Nikos Parotsidis, from University of Rome "Tor Vergata", is visiting the data mining group for two months.
22 Jul 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 Jul 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 Jun 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 Jun 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 Jun 2016
Clemens Westrup was selected to represent Aalto in the IBM Best Student Recognition Event 2016, which will take place in Hursley, UK.
6 Jun 2016
Preethi Lahoti has started an internship in Bell Labs Dublin.
1 Jun 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 Jul 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 Jun 2015
Fabio Vitale from the University of Lille is visiting the Data Mining group.
22 Jun 2015
Open positions in the Data Mining group.
22 Jun 2015
Gianmarco De Francisci Morales is visiting the Lab of Communicaiton Networks (LCN) in KTH.
17 Jun 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 Apr 2015
Tutorial on "Dense subgraph discovery" with Aristides Gionis and Babis Tsourakakis will be presented in KDD 2015.
30 Apr 2015
The paper "Multiview triplet embedding: learning attributes in multiple maps", by Ehsan Amid and Antti Ukkonen, was accepted to ICML 2015.
22 Apr 2015
The data mining group joins the Revolution of Knowledge project, funded by Tekes.
17 Apr 2015
Short paper accepted to SIGIR 2015: "Subsequence search in event-interval sequences", by Orestis Kostakis and Aristides Gionis.
12 Mar 2015
Gianmarco De Francisci Morales is joining the data mining group as a postdoc (nationalities++).
11 Mar 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.