Showing posts with label trip. Show all posts
Showing posts with label trip. Show all posts

Hypertext2017 Travel Report


I participated the 28th ACM Conference on Hypertext and Social Media (HT), which was located at Prague, Czech Republic from 4-7th, July. HT is a top-tier ACM conference in the areas of Hypertext and Social Media. This is the first time I'm attending HT, and interesting to know that TBL was demonstrated WWW in 1991 Hypertext conference https://home.cern/images/2014/01/tim-berners-lee-demonstrates-world-wide-web. https://www.quora.com/Why-is-Sir-Tim-Berners-Lee-unnoticed-when-his-contribution-is-comparable-to-Jobs-and-Gates. This year, HT has 69 regular paper submissions with a 27% acceptance rate, and 12 short-presentations. As I was at UMAP conference twice before, and HT has been held in close proximity with UMAP with similar program committees, I was wondering what's the difference between the two conferences. After attending the conference, I guess the key difference is while UMAP is more focused on the context of e-learning, such as user modeling, RecSys in educational systems, HT is more focused on linking data & resources and Social Media. Although HT has wide range of acceptance rate, overall, it has good average citation according to ACM DL.




Day-1:

Keynote: Peter Mika SCHIBSTED (Yahoo before)

It is interesting to see the keynote on Semantic Web in HT. In this talk, we look back at the history of the Semantic Web. The speaker discussed what the original aspirations of its creators were, and what has been achieved in practice in these two decades including some achievements especially in terms of search engines. In addition, also some failures which have not been achieved based on original visions.


What happened to the Semantic Web? from Peter Mika

Most of the presentations today related to studying problems on Social Media, such as hate speech:

  • Mainack Mondal, Leandro Augusto de Araújo Silva and Fabrício Benevenuto: A Measurement Study of Hate Speech in Social Media
  • Stringhini and Athena Vakali: Hate is not binary: Studying abusive behavior of #GamerGate on Twitter
These talks were interesting as I was interested in computational social science when I first started my PhD. For example, the first one above discussed about "how to measure hate speech?", "does the anonymity plays a role in it?", and how these phenomena differ across countries. The results, based on Twitter dataset were interesting. The authors found that there are more anonymous account of hate speech compared to baseline (random), i.e, users post more hate speech.

Day-2:

Keynote: "A MEME IS NOT A VIRUS: THE ROLE OF COGNITIVE HEURISTICS IN INFORMATION DIFFUSION" by Kristina Lerman

Kristina Lerman is Research Team Lead at the University of Southern California Information Sciences Institute and holds a joint appointment as a Research Associate Professor in the USC Computer Science Department. She talked about position bias in Social Mdedia, e.g., posts will be less likely to be seen with lower position, with more newer tweets coming, former tweets then become less likely to be seen with their positions moving down… and the phenomenon is more serious for well-connected users. Also, it is interesting that well-connected hubs are less likely to retweet older posts, retweet probability decreases with connectivity - highly connected people are less susceptible to infection, due to their increased cognitive load.

The presentations on day-2 were diverse, consists of linking content, crowd sourcing, story telling... And the following paper which tackles the problem of understanding task clarity in crowdsourcing platforms, especially CrowedFlow…, and how to measure it, won the best paper award in HT2017.

  • Ujwal Gadiraju, Jie Yang and Alessandro Bozzon: Clarity is a Worthwhile Quality - On the Role of Task Clarity in Microtask Crowdsourcing


Day-3:

The presentations on day-3 were about location-based social networks, user modeling, ratings/reviews and visualizations. One of the interesting papers was the following one which I had read about the previous work about happy map done by Daniele QUercia (Bell Labs Cambridge). This paper talked about various elements which might affect perceptions (such as safety etc.) of people about places.

  • David Candeia, Flávio Figueiredo, Nazareno Andrade and Daniele Quercia: Multiple Images of the City: Unveiling Group-Specific Urban Perceptions through a Crowdsourcing Game

My presentation was about "Leveraging Followee List Memberships for Inferring User Interests for Passive Users on Twitter", which is an extended work upon previous work in ECIR2017.



Leveraging Followee List Memberships for Inferring User Interests for Passive Users on Twitter from GUANGYUAN PIAO


Overall, the conference has around 70+ participants. However, what's impressive is the audiences were actively asking questions, and participated in discussions. In addition, the organizers made the proceedings available before the conference along with conference navigator developed by Uni. Pittsburgh: http://halley.exp.sis.pitt.edu/cn3/portalindex.php

Proceedings: http://dl.acm.org/citation.cfm?id=3078714&picked=prox&cfid=782021270&cftoken=32813465

Next year, HT2018 will be in Baltimore, USA. It is a good conference and hope I will have chances to attend the conference in the future as well.

ACM SAC 2016 Travel Report

From the 4th to the 8th of April I had the pleasure to participate the 31st ACM Symposium on Applied Computing (ACM SAC), which was held in beautiful city Pisa, Italy. I was there to present my full paper "Measuring Semantic Distance for Linked Open Data-enabled Recommender Systems" and to participate the Student Research Competition sponsored by Microsoft.

This year, there were over 500+ registrations from 59 countries at this conference. There were 37 tracks and the overall acceptance rate for this year is 24%.

Keynotes:

There were two keynotes given by John Mylopoulos and Marco Conti, respectively. The first keynote is about the requirements problem in Software Engineering and the second keynote is about "From MANET to people-centric computing and communications.


Semantic Web Track:

There were two sessions with eight papers for Semantic Web Track where three of the participants two of the participants from our institute. Pasquale Minervini presented "Leveraging the Schema in Latent Factor Models for Knowledge Graph Completion" and another college Feng Gao presented "QoS-Aware Adaptation for Complex Event Service" in another (SOA) track.


Social Network and Media Analysis Track (SONAMA):

One of the papers in this track I'm interested in was "Inferring Semantic Interest Profiles from Twitter Followees: Does Twitter Know Better than Your Friends?" from Christoph Besel, University of Passau, Germany, which is related to my work. Although many previous works focused on using tweets for inferring user interest profiles, they used the alternative source (followees) to retrieve user interest profiles, which are based on the tendency that more and more users are consuming feeds instead of producing content on the social networks.

Student Research Competition (SRC):

I also participated in SAC SRC and went through 2nd round (top-5 list) and it was a good opportunity to compete across different disciplines. Congrats to all top-3 winners! 

Lunch

Banquet

What would make the conference better?

It would be better to have a Twitter channel to communicate and disseminate activities during the conference. Next year, it will be in Morocco and hope I could attend again:).

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Update after the conference:

The proceedings are available from June, 2016

Milano Galway Review


The restaurant is located in a place near the Docks and today is the second visit to this place. We ordered American hottest and Calzone as main courses. 

American hottest consists of pepperoni and hot green pepper with fresh red chilli and etc. It was much better than the special pizza with lamb last time during Chirstmas season. The American hottest was truly remarkable and the flavor of red chili, peppers with pepperoni was very tasty. Really loved the balance between pepperoni and peppers. For the second main course, I really liked the bread of Calzone, which is truely attractive and I've never tried such tasty bread before. 

The restaurant is well designed and spaceful. We visited the restaurant at 6:00PM on Sunday, but we were surprised that it was so crowded. It is definitely one of the most popular local restaurants and we are going to visit it again.

스위스 여행 셋째날 - 융프라우 (Jungfrau) 여행 및 패러클라이딩 (Paragliding)


융프라우로 다이렉트로 올라가는 건 넘흐 비싸다... 올라가는 로선은 왼족(First), 중간(융프라우) 및 오른쪽(Muren)이 있는데...전경을 보고 하고 싶은 패러글라이딩을 하기 위해서 왼쪽 First랑 오른쪽 Muren을 가기로 했다.

어제 인터라켄 날씨가 나빠서 일정을 바꿔 마테호른으로 간게 신의 한수 였다.. 
Youth 호스텔 로비에서 산위의 현황을 모니터링 하는 모니터가 있는데 아침에는 날씨가 안좋아서 걱정했는데... 오전이 되니 너무 날씨가 너무 좋았음...













패러글라이딩 180프랑에 40프랑 (사진 및 동영상 포함 옵션)... 
드디어 하는구나... 날씨가 너무 좋아서 여행중 가장 좋았던 경험:)







올... 오랜만에 모든 걸 잊고 활짝

인터라켄 숙사로 돌아와서 식사를 하고 다시 오른쪽 Muren으로 저녁에 출발... 유럽은 6월에 날이 9시가 넘어도 밝으니 좋다... 아래는 Muren에서 본 전경, 이쪽은 저녁에 가서 그런지 사람이 한적했다.