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Jukka Suomela
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Jukka Suomela

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PODC 2015 (ACM Symposium on Principles of Distributed Computing) list of accepted papers now online: http://www.podc.org/podc2015/program/

#PODC2015Spain  
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Jukka Suomela

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Here are the papers from our group that were accepted to PODC 2015 as regular papers:

— Algebraic Methods in the Congested Clique: http://arxiv.org/abs/1503.04963
— Towards Optimal Synchronous Counting: http://arxiv.org/abs/1503.06702
— Improved Analysis of Deterministic Load-Balancing Schemes: http://arxiv.org/abs/1404.4344

Apparently there were 191 submissions, 45 accepted as regular papers, 10 as brief announcements.

#PODC2015Spain  
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The track C (Foundations of Networked Computing) acceptances are also online at http://www.kurims.kyoto-u.ac.jp/icalp2015/accepted-ICALP-C.html — track B (Logic, Semantics, Automata and Theory of Programming) is still listed as forthcoming.
Noa Avigdor-Elgrabli, Sungjin Im, Benjamin Moseley and Yuval Rabani. On the Randomized Competitive Ratio of Reordering Buffer Management with Non-Uniform Costs. Yixin Cao. Unit Interval Editing is Fixed-Parameter Tractable. Andreas Emil Feldmann, Jochen Koenemann, Isaac Fung and Ian Post.
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Unpleasant surprises — I just installed the usual recommended updates to my Mac laptop, and this is what I got:

$ git --version
git version 2.3.2 (Apple Git-55)

How can I now easily get a pre-2.2 version of Git? Homebrew isn't helping, either.

#git #osx
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+David Eppstein: Git 2.2 makes it difficult to use large git repositories: http://stackoverflow.com/questions/27454259/git-2-2-x-updates-timestamps-of-old-pack-files-for-no-good-reason

Yes, this seems to be a Yosemite thing.
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Jukka Suomela

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Digital Humanities Hackathon in Helsinki: a five-day intensive course that brings together students and researchers of humanities, social sciences, and computer science.

#DigitalHumanities   #hackathon   #UniHelsinki   #Helsinki  
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Stefan Schmid, the new editor of the Distributed Computing Column of the Bulletin of the EATCS, asked me to write an article on the recent advances related to lower bounds for distributed graph algorithms. You can now read it in the February 2015 issue of the bulletin.

I decided to focus on two issues: symmetry breaking and local coordination. Symmetry breaking in this context is nowadays very well understood, but few people are even aware of the issue of local coordination.

If you ever wonder why I am so obsessed by the seemingly boring problem of finding maximal matchings in bipartite graphs, this article will hopefully gives an explanation.
Thanks to the work of Kazuo Iwama, editor in chief of the bulletin, and of his collaborators, the February 2015 issue of the Bulletin of the EATCS is now available on line. You can download the whole issue in PDF from here, i...
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To our local students who have already got good skills in programming and algorithmic problem solving, and who are looking for new challenges:

Przemysław Uznański and Ari Korhonen are organising a special course for students who would be interested in taking part in international programming competitions. Registration deadline: 24 February.

#aalto   #competitiveprogramming  
T-106.6200 Special Course in Software Engineering: Introduction to Algorithmic Problem Solving and Programming Contests (3 cr). Course outline. This course is meant primarily for School of Science students with some Computer Science background. We are interested in following groups: ...
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Jukka Suomela

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PODC 2015 (ACM Symposium on Principles of Distributed Computing) list of accepted papers now online: http://www.podc.org/podc2015/program/

#PODC2015Spain  
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"Incorrect Date on DNG Images from Camera2 API"

The possibility of getting DNG files from modern Android phones is a really nice feature, but this bug makes it painful to use. Timestamps in the DNG files are garbage, they can be off by several days, and this makes it difficult to organise photos in Lightroom.

The kludge that I currently use is the following: after importing files to Lightroom, I run a shell script that copies timestamps from JPEG files to DNG files. Then I can select all photos in Lightroom and use "Edit Capture Time", "Change to file's creation time".

OS X file system makes this somewhat complicated. Just using "touch" to change time stamps is not enough, you need to do something like "SetFile -d" to change the creation date.

#android5   #dng   #lightroom  
Android Open Source Project - Issue Tracker
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Teaching practical parallel programming here at Aalto University — the first set of slides is now available online.

#parallelcomputing   #parallelprogramming   #AaltoUniversity  
Overview. This is a practical hands-on course on algorithm engineering for modern parallel computers. You will learn how to design programs that make the best possible use of the computing power of multicore CPUs and GPUs.
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Looks good. I could trade a few credits' worth of Java 1.2 for this :)
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Most of Scandinavia determines fines based on income. Could such a system work in the U.S.?
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Jukka Suomela

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"Unfortunately, we weren’t able to prove its correctness. A closer analysis showed that this was, quite simply, because TimSort was broken and our theoretical considerations finally led us to a path towards finding the bug (interestingly, that bug appears already in the Python implementation)."

#timsort   #java   #python  
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do u have idea how to use python packages?
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This post is to report briefly on a new and to my mind very exciting venture in academic publishing. It's called the Selected Papers Network

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Abstract. Do unique node identifiers help in deciding whether a network G has a prescribed property P? We study this question in the context

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