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https://ceur-ws.org/Vol-1019/preface.pdf
Preface
The 3rd Workshop on Making Sense of Microposts (#MSM2013) was held in
Rio de Janeiro, Brazil, on the 13th of May 2013, as part of the 22nd Interna-
tional Conference on the World Wide Web (WWW'13). #MSM2013 is the third
in a series of successful workshops. The #MSM workshop was rst held at the
8th Extended Semantic Web Conference (ESWC 2011), and with approximately
50 participants, was the most popular workshop at ESWC 2011. The second
workshop was held at the 21st International Conference on the World Wide Web
(WWW'12), and had approximately 60 participants, as did this year's workshop.
The #MSM series of workshops is unique in targeting both Semantic Web
researchers and other elds, within Computer Science, such as Human-Computer
Interaction and Visualisation, and in other areas, particularly the Social Sciences.
The aim is to harness the bene ts dierent elds bring to research involving Mi-
croposts. The workshop also encourages the demonstration of the generation
and use of Microposts through dierent physical and online media, as well as
application of research, and re-use of Micropost data in real-world scenarios.
Continuing to hold the workshop at WWW allows us to reach a wider and more
varied audience and target research and applications at the leading edge of tech-
nology. The 2013 edition was an occasion to expand our community, and with
the conference in Rio de Janeiro, to connect with local researchers from Brazil
and South America, opening the way for new synergy and interesting discussions
within the local cultural context.
In a world where more and more data is becoming available to machines,
questions related to the use of this data for increasing machine intelligence nat-
urally arise. Big Data treatment eorts exploit masses of data using statistical
approaches in order to conceive anticipatory systems able to predict future hu-
man behaviour and adapt to it. Semantic analysis of Web content, including
Microposts, is another complementary perspective to the goal of making ma-
chines more intelligent and more capable of supporting daily human activity,
decision making and communication. We are seeing a very large increase in
systems relying on Semantic Web technologies being deployed: Intelligent Assis-
tants, such as Siri1 , rely on Semantic Data Graphs to provide users with factual
responses to their questions. Facebook Graph Search2 allows users to formu-
late complex queries over a socio-semantic graph constructed from people's likes
and structural knowledge about things being liked. While static knowledge bases
are largely employed in such systems, exploiting the dynamic, evolving knowl-
edge that resides in the growing masses of Microposts, invaluable as they are
acknowledged to be, remains a major challenge.
Each year we make a little step toward resolving this challenge, due largely
to what makes publishing via Microposts so popular their brevity, and as a
1
http://www.apple.com/ios/siri
2
https://www.facebook.com/about/graphsearch
· #MSM2013 · Concept Extraction Challenge · Making Sense of Microposts III · i
result, the use of non-standard abbreviations, informal language and grammar.
With each workshop we have found that our research community continues to
open exciting new possibilities for constructing increasingly intelligent and use-
ful services.
New to this year's workshop is the Concept Extraction Challenge , spon-
sored by eBay. Existing concept extraction tools are intended for use over news
corpora and similar document-based corpora with relatively long length. The
aim of the challenge was to foster research into novel, more accurate concept
extraction for (much shorter) Micropost data. The keen interest in concept ex-
traction that is shared by our community motivated this challenge, focused for
this rst time on a rather general task. The interest shown in the challenge by
both academia and industry has con rmed its relevance. We aim to pursue the
challenge in the future editions of #MSM, and are investigating new challenge
tasks and the use of dierent collections of data, prompted by the challenge
results and further research it continues to foster.
This rst run of the challenge has been a learning curve, with contributions
from participants, not just in their formal submissions, but also to corrections in
the training data that fed into the cycle of updates that resulted in the nal gold
standard. The #MSM2013 Concept Extraction Challenge received 22 complete
submissions, out of which 6 were accepted for presentation at the workshop,
and a further 7 for presentation as posters. Submissions came from institutions
across 12 countries, with 13% of submitting authors from Brazilian institutions.
Many hearty thanks to all our contributors and participants, and also the
Programme Committees whose valued feedback resulted in a rich collection of
work, each of which adds to the state of the art in leading edge research in the
challenging task of information extraction from Microposts. Especial thanks to
Andrea Varga, who was largely responsible for generating the challenge dataset,
and Pablo Mendes who gave us very useful suggestions on collaborative anno-
tation of the data. We are con dent that the #MSM series of workshops will
continue to foster a vibrant community, and target the rich body of information
generated by the many and varied authors whose social and working lives span
the physical and online worlds.
Amparo E. Cano KMi, The Open University, UK
Matthew Rowe Lancaster University, UK
Milan Stankovic Université Paris-Sorbonne, France
Aba-Sah Dadzie The University of She eld, UK
#MSM2013 Concept Extraction Challenge Organising Committee, May '13
· #MSM2013 · Concept Extraction Challenge · Making Sense of Microposts III · ii
Summary of Other Contributions to #MSM2013
Published with ACM as a companion volume to the WWW'13 proceedings, the
main track3 received 13 paper submissions, out of which 4 full and 2 short papers
were accepted. This was in addition to a poster and demo session, to exhibit
practical application in the eld, and foster further discussion about the ways in
which data extracted from Microposts is being reused. The accepted submissions
cover an array of topics, including a variety of approaches to concept extraction
again reinforcing its importance with respect to research on Microposts, among
these, rule-based, machine learning and hybrid methods. Other topics covered
range from research from a social science perspective, on the use of Microposts
to publicise and discuss trending events and topics, and the extraction of intent,
meaning and sentiment. Submissions came from 9 countries, with 29% of all
authors from institutions in Brazil. Thanks to our local chair, Bernardo Pereira
Nunes, who helped, among other things, to promote the workshop and challenge
to local institutions.
The main track proceedings include also the keynote abstract, `Urban*: Crowd-
sourcing for the good of London '4 , presented by Daniele Quercia, of the Cam-
bridge Networks Network at the University of Cambridge, England, UK.
The #MSM2013 award for the best paper, based on nominations by the
reviewers and con rmed by the workshop chairs, was awarded to:
Lisa Posch, Claudia Wagner, Philipp Singer & Markus Strohmaier
for the paper:
Meaning as Collective Use: Predicting Hashtag Seman-
tics on Twitter5
Introduction to the #MSM2013 Challenge Proceedings
This volume includes rst a challenge report, with a summary of the state of
the art and a comparison of the performance of the approaches taken for the
13 submissions accepted. This provides an overview of the capability of the
state of the art in Concept Extraction approaches to date. This introductory
paper details the challenge objectives and task, and the dataset construction
and validation processes. We also provide a comprehensive description of the
3
#MSM2013 welcome: http://dl.acm.org/citation.cfm?id=2490000.2487998
4
#MSM2013 keynote: http://dl.acm.org/citation.cfm?id=2487788.2488000
5
Best paper, main track: http://dl.acm.org/citation.cfm?id=2487788.2488008
· #MSM2013 · Concept Extraction Challenge · Making Sense of Microposts III · iii
quantitative evaluation methodology followed and the performance and ranking
metrics used.
Participants' descriptions of the systems implemented complete the proceed-
ings. Each submission was peer reviewed, to provide the authors with feedback
on their approach and to identify interesting and promising work to present at
the workshop. The quantitative evaluation described in the report was also car-
ried out to rank submission runs this was the nal criterion, with a cut-o for
acceptance, and the key measure for the challenge award.
Concept Extraction Challenge Award
eBay6 sponsored the challenge award: US$ 1,500, for the best submission. Nom-
inations were sought from the reviewers, and a nal decision agreed by the
challenge chairs, based on their nominations, review scores and the results of the
quantitative evaluation. The #MSM2013 Concept Extraction Challenge Award
went to:
Mena Habib, Maurice Van Keulen & Zhemin Zhu
for their submission entitled:
University of Twente at #MSM2013
6
http://www.ebayinc.com
· #MSM2013 · Concept Extraction Challenge · Making Sense of Microposts III · iv
Challenge Evaluation Committee
Naren Chittar eBay, USA
Óscar Corcho Universidad Politécnica de Madrid, Spain
Danica Damljanovic Kuato Studios, London, UK
Anna Lisa Gentile The University of She eld, UK
Diana Maynard The University of She eld, UK
Peter Mika Yahoo! Research, Spain
Enrico Motta KMi, The Open University, UK
Daniel Preotiuc The University of She eld, UK
Alan Ritter University of Washington, USA
Guiseppe Rizzo Eurecom, France
Raphaël Troncy Eurecom, France
Victoria Uren Aston Business School, UK
Andrea Varga The University of She eld, UK
Additional Material
The call for participation and all challenge abstracts, in addition to those for the
main workshop track, are available on the #MSM2013 website7 . The full chal-
lenge proceedings are also available on the CEUR-WS server, as Vol-10198 . The
proceedings for the main track are available as part of the WWW'13 Proceed-
ings Companion9 . The proceedings for the 1st and 2nd workshops are available
as CEUR Vol-71810 and Vol-83811 respectively.
7
Challenge web pages: http://oak.dcs.shef.ac.uk/msm2013/ie_challenge.html
8
#MSM2013 Challenge proceedings: http://ceur-ws.org/Vol-1019
9
WWW'13 Proceedings Companion: http://dl.acm.org/citation.cfm?id=
2487788
10
#MSM2011 proceedings: http://ceur-ws.org/Vol-718
11
#MSM2012 proceedings: http://ceur-ws.org/Vol-838
· #MSM2013 · Concept Extraction Challenge · Making Sense of Microposts III · v