March 30, 2013

Computational topology at SOCG 2013

As usual, the list of papers accepted to the 2013 Symposium on Computational Geometry includes several papers on computational topology — by my count, at least 12 papers out of 48, which is not as overwhelming as last year, but still a healthy fraction of the conference.  Here is a (likely incomplete) list, with links to as many preprints as I could find.

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March 16, 2013

Busy busy

Whew! I'll post more about each of these activities in the coming months.

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November 22, 2012

SOCG votes to leave ACM

The following message was recently sent to the computational geometry mailing list by the SOCG steering committee. (SOCG is the Symposium on Computational Geometry, which has been affiliated with ACM since its inception in 1985.)

Dear SoCG community,

As you will recall, we recently held a poll about the ACM affiliation of SoCG. The alternatives were

A. I prefer to stay with ACM.

B. I prefer to leave ACM, and organize SoCG as an independent conference with proceedings published in LIPIcs and with financial backing provided through other means.

In total 87 votes were cast. 1 vote was invalid, the other 86 votes were distributed as follows:

Option A: 36 votes (42%)
Option B: 50 votes (58%)

Some other statistics: of the 86 valid votes, 67 were by faculty, 12 by postdocs, 4 by phd students, and 3 by others.

Following this outcome the SoCG Steering Committee will start taking further steps to implement the separation from ACM. (Note that SoCG 2013, and most likely also SoCG 2014, will still be organized with ACM affiliation.) These further steps will be taken by the new Steering Committee, for which there will be elections soon.

We would like to thank everyone who participated in the poll.

The SoCG Steering Committee: Mark de Berg (secretary), Joe Mitchell, Gunter Rote, Jack Snoeyink (chair), Monique Teillaud.

When I posted this email on Google+, one well-known ACM member thundered:

This is "pretend democracy", IMHO. There are way more than 87 people who consider themselves to be computational geometers. It is not clear to me that this vote really represent the sense of the community.

I agree that the small number of votes is disappointing, but I believe the vote was fair and reflect the opinion of the community: A majority in favor of leaving ACM, but not an overwhelming one. This decision has been brewing for at least two years, with several iterations of voting, using precisely the same voting procedures that we use to elect the SOCG steering committee. Specifically:

  • Although it had been raised informally before, the issue of whether to leave ACM was first formally raised at the SOCG 2011 business meeting in Paris. (Among other issues, the local organizers estimated that ACM sponsorship increased the conference registration fee by 100 euros.) A near-unanimous majority of the attendees supported a motion for the steering committee to investigate moving the proceedings to LIPIcs, drawing up a concrete proposal, and polling the larger computational geometry community via the well-established community mailing list.

  • In October 2011, the steering committee sent a detailed message to the computational geometry mailing list, outlining the costs and benefits of ACM membership versus publication through LIPIcs and asking for votes on three options: (A) Stay with ACM. (B) Stay with ACM iff their role can be limited to publishing the proceedings at low cost. (C) Leave ACM. The final was 29 for option A, 48 for option B, and 47 for option C. The steering committee took the vote as a mandate to approach ACM investigating the possibility of a publisher-only relationship.

  • At SOCG 2012 in Chapel Hill, the steering committee reported that although ACM was willing to offer some concessions, they were not willing to publish proceedings without formally sponsoring the conference. They announced at the business meeting that there would be a second and final vote on the community mailing list this fall. No vote was taken at the business meeting, because it was rightly felt that the attendees at one iteration of SOCG did not constitute a quorum.

  • In October 2012, the steering committee sent a detailed proposal to the community mailing list, again outlining costs and benefits, describing the results of their negotiations with ACM, and cautioning that a decision to leave has serious and complex consequences. The proposal asked for a vote for two options:

    1. I prefer to stay with ACM.

    2. I prefer to leave ACM, and organize SoCG as an independent conference with proceedings published in LIPIcs and with financial backing provided through other means.

    The ballot also warned that if the vote was too close or there were too few votes altogether, the steering committee would decide on its own. The final vote passed both these hurdles.

Both votes were publicized at the SOCG business meetings, on the web/blogs/twitter/facebook/google+, and by direct email to more than 800 community members. You can read the proposals yourself at http://computational-geometry.org/

Others may disagree, but my impression is that the steering committee itself did not push for leaving ACM. Indeed, some of the staunchest defenders of ACM sponsorship are steering committee members. Moreover, the transition away from ACM will require significant work on their part. (More accurately, since we are about to have another steering committee election, on the part of the new steering committee, but there is usually significant overlap from one election cycle to the next.)

In short, this is as close to "real democracy" as the SOCG community knows how to enact, and closer than I've seen at any other conference. For comparison, both SODA's decision to increase the length of camera-ready papers to 20 pages (which has significant effect on later journal publication) and STOC's recent decision to move to a significantly larger, two-tier program committee were enacted with no public vote or discussion. (Yes, these are much less significant decisions, but similar decisions at SOCG without a vote would raise howls of protest.)

Posted at 01:30 PM | | Comments (1)

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November 19, 2012

Computational Advertising at UIUC

The Departments of Advertising and Computer Science at Illinois are running a search for a joint senior faculty position in computational advertising. The position is tenured on arrival and will be shared between the two departments. The application deadline is January 15, 2013. Please feel free to contact me for more information; I'm co-chairing the search subcommittee. Here's the official advertisement:

The Departments of Computer Science (CS) and Advertising (ADV) at the University of Illinois at Urbana-Champaign invite applications for a joint faculty position in Computational Advertising. This novel position is part of a new multi-year Strategic Excellence Hiring Program at Illinois that focuses on: (a) Information, Technology and Society, (b) Human Health and Wellness, (c) Energy and Sustainability, and (d) Culture, Communication, and Global Issues. We seek candidates with CS skills in areas such as “big data”, data-mining, or algorithmic game theory, and with advertising interests or experience in areas such as online /contextual advertising, digital privacy, behavioral targeting, and social media analytics. Applications are encouraged from candidates whose research programs are in traditional as well as in nontraditional areas that would support novel research and teaching across the emerging discipline of Computational Advertising. Each department is engaged in exciting new and expanding programs for research, education, and professional development, and each has strong ties to industry, across a wide landscape of technology and media partners.

Faculty in the CS department carry out research in a broad spectrum of areas and are supported by world-class facilities, starting with our department’s home in the Siebel Center for Computer Science, and including collaborations with the National Center for Supercomputing Applications, the Coordinated Science Laboratory, the Information Trust Institute, and the Illinois Informatics Institute, as well as several industrial centers and programs that foster international collaborations. The CS department has one of the leading programs in the United States, granting approximately 200 B.S. degrees, 70 M.S. degrees, and 60 Ph.D. degrees annually. The Department of Advertising, the first such academic department in the country, was established in 1959 by Charles H. Sandage, considered to be the father of advertising education. Today, the top-ranked department celebrates Sandage's legacy with scholarship and teaching focused on understanding, evaluating and communicating the many facets of advertising. Approximately 150 B.S. degrees and 20 M.S. degrees are granted annually. Faculty can also teach in the Institute for Communications Research (ICR) doctoral program in the College of Media.

In order to ensure full consideration by the Search Committee, applications must be received by January 15, 2012. Salary will be commensurate with qualifications. Preferred starting date is August 16, 2013, but is negotiable. Applications can be submitted by going to http://jobs.illinois.edu (jobid: 26890) and uploading a cover letter, CV, research statement, and teaching statement, along with names of three references. For inquiry, please call 217-244-7949 or email [email protected].

Illinois is an Affirmative Action /Equal Opportunity Employer and welcomes individuals with diverse backgrounds, experiences, and ideas who embrace and value diversity and inclusivity (www.inclusiveillinois.illinois.edu).

The CS department also has three open-rank faculty positions, in the broad areas of software engineering, scientific computing, and "big data". Please (ask your students to) apply!

Posted at 10:19 AM in Academia, Computer science | | Comments (0)

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March 22, 2012

Applied and computational topology: ATMCS 5

Second Announcement

This meeting will take place in the period July 2-6, at the ICMS in Edinburgh, Scotland. The theme will be applications of topological methods in various domains. Invited speakers include

  • Jean-Daniel Boissonnat (INRIA Sophia Antipolis) (Confirmed)
  • Rien Van de Weijgaert (Groningen) (Confirmed)
  • Nati Linial (Hebrew University, Jerusalem) (Confirmed)
  • Shmuel Weinberger (University of Chicago) (Confirmed)
  • Stephen Smale (City University of Hong Kong) (Confirmed)
  • Herbert Edelsbrunner (IST, Austria) (Confirmed)
  • Eric Goubault (Commissariat à l’énergie atomique, Paris) (Confirmed)
  • Sanjeevi Krishnan (University of Pennsylvania) (Confirmed)
  • Matthew Kahle (The Ohio State University) (Confirmed)
  • Leo Guibas (Stanford University) (Confirmed)
  • Robert Macpherson (IAS Princeton) (Tentative)
  • Andrej Szymczak (Colorado School of Mines) (Confirmed)
  • Primož Škraba / Mikael Vejdemo-Johansson (Ljubljana/St. Andrews) (Confirmed)
  • Yuriy Mileyko (Duke University) (Confirmed)
  • Daniel Cohen (Louisiana State)
  • Vin de Silva (Confirmed)

There will be opportunities for contributed talks. Titles and abstracts should be send to Gunnar Carlsson at [email protected].

The conference website is located at http://www.icms.org.uk/workshops/atmcs5. Those interested should register there as soon as possible so that we can obtain an idea of the number of participants.

For the organizing committee,

Gunnar Carlsson

(Posted at the request of Mikael Vejdemo-Johansson.)

Posted at 03:12 AM | | Comments (1)

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February 17, 2012

SOCG(T) 2012

The list of accepted papers for SOCG 2012 has been released. By my admittedly liberal count, 21 of the 44 accepted papers qualify as computational topology. Maybe it's time to add "...and Topology" to the name of the conference!

(Ha, ha, only serious.)

Posted at 08:41 AM in Computational Geometry | | Comments (0)

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October 12, 2011

SOCG 2012 call for papers, videos, and multimedia

At Tamal Dey's request, here is the

CALL FOR PAPERS, VIDEOS, and MULTIMEDIA

28th Annual Symposium on Computational Geometry (SoCG 2012)

June 17-20, 2012 (tentative)
University of North Carolina, Chapel Hill
In cooperation with ACM SIGACT and SIGGRAPH
Web-page: http://socg2012.web.unc.edu

The Twenty-Eighth Annual Symposium on Computational Geometry will be held in University of North Carolina, Chapel Hill. We invite submissions of high-quality papers that describe original research on issues related to computational problems arising from geometric considerations. We also invite submissions of original videos and multimedia on these same themes. This year, SoCG will be collocated with a workshop, Computational Geometry: Applications, Practice, and Theory (CG:APT), whose call for submissions (due Feb 27) will be distributed separately.

The topics of the SoCG 2012 Symposium reflect the rich diversity of research interests in computational geometry. They are intended to highlight both the depth and scope of computational geometry, and to invite fruitful interactions with other disciplines. Topics of interest include, but are not limited to:

  • design, analysis, and implementation of geometric algorithms and data structures; lower bounds on the computational complexity of geometric problems;
  • mathematical, numerical, algebraic, and experimental issues arising in geometric algorithms and heuristics; discrete and combinatorial geometry; computational topology;
  • novel applications of computational geometry in computer graphics, geometric modeling, computer-aided design and manufacturing, scientific computing, geographic information systems, database systems, robotics, computational biology, machine learning, sensor networks, biomedical imaging, combinatorial optimization, statistical analysis, discrete differential geometry, theoretical computer science, graph drawing, pure mathematics, and other fields; novel problems in computational geometry arising from these fields.

Important Dates

  • November 22, 2011: Paper titles and abstracts (at most 300 words) due (23:59, Honolulu time)
  • December 2, 2011: Paper submissions due (23:59, Honolulu time)
  • February 17, 2012: Notification of acceptance/rejection of papers
  • February 27, 2012 : Submissions of videos and multimedia due (23:59, Honolulu Time)
  • March 8, 2012: Notification of acceptance/rejection of video/multimedia
  • March 22, 2012: Camera-ready versions due for papers and video/multimedia abstracts
  • April 26, 2012: Final versions of video/multimedia due
  • June 17-20, 2012 (tentative): Symposium in Chapel Hill, North Carolina

Call for Papers

We invite submissions of high-quality papers describing original research on geometric algorithms and data structures, their mathematical foundations and correctness, their implementation, and their applications.

Final versions of accepted papers will be published by ACM in the symposium proceedings. Proceedings will be distributed to symposium participants and will also be available from ACM for purchase and through the ACM digital library. An author of each accepted paper will be expected to attend the Symposium and give a presentation (approximately 20 minutes) of the paper. Authors of a selection of papers from the conference will be invited to submit extended versions of their papers to a special issue of one or more journals. This year we also plan to confer two Best Paper Awards, and a Best Student Presentation Award. The Student Presentation award will be based on the quality of the presentation of a paper by a student during the conference.

Paper Submission

All submissions should be made electronically; see the EasyChair SoCG2012 web page https://www.easychair.org/conferences/?conf=socg2012 for detailed submission instructions (to be available shortly). If electronic submission is not feasible, please contact the program committee chairs, Tamal Dey and Sue Whitesides, well in advance of the submission deadlines.

Submission Guidelines

Papers should be submitted in the form of an extended abstract, which begins with the title and abstract page that contains the title of the paper, each author's name, affiliation, and e-mail address followed by a short abstract. The main body of the extended abstract should begin with a precise statement of the problem considered, a succinct summary of the results obtained (emphasizing the significance, novelty, and potential impact of the research), and a clear comparison with related work. The remainder of the extended abstract should provide sufficient detail to allow the program committee to evaluate the validity, quality, and relevance of the contribution. Clarity of presentation is very important; the whole extended abstract should be written carefully, taking into consideration that it will be read and evaluated by both experts and non-experts, often under tight time constraints.

Submissions should be typeset in single column format, using 11-point or larger font, with at least 1 inch/2.54 cm margins and single line spacing. Excluding the title page and bibliography, the extended abstract must not exceed 10 pages. Submissions deviating from these guidelines risk rejection without consideration of their merits.

All necessary details to verify the results must be provided. If they cannot fit within the 10-page limit, a clearly marked appendix containing omitted details should be included. Appendices are not counted in the 10 page limit, so while they may serve as a reference, they will be read by the program committee members at their discretion. The paper excluding the appendix should clearly describe the results and the approach to achieve them, and give sufficient confidence for their validity. The appendix should then give all the necessary details to verify correctness.

Anticipating the usual high overall quality of submissions, the program committee intends to interpret the scope of the conference broadly, and will seriously consider all papers that are of significant interest to our research community.

Authors must submit the title and an abstract (at most 300 words) of their papers by November 22, 2011. This pre-submission will be used to help make program committee reading assignments. Extended abstracts must be received by December 2, 2011 (23:59, Honolulu time). There will be no extension of these deadlines; late submissions will not be considered. Authors will be notified of acceptance or rejection by February 17, 2012. The final proceedings papers must be formatted in accordance with ACM proceedings guidelines; LaTeX style files will be made available to authors of accepted papers.

Concurrent submission of the same (or essentially the same) abstract to SoCG and to another conference with published proceedings is not allowed. An extended abstract of a paper that is under journal review, or scheduled for publication in a journal after June 2012, may be submitted, when it is clear that the extended abstract differs substantially from the journal version. In such cases, the authors must include the journal version in an appendix that clearly identifies the status of the journal submission.

Program Committee

  • Pankaj Agarwal (Duke University)
  • Dominique Attali (Gipsa-Lab, Grenoble)
  • Gill Barequet (Technion-Israel Institute of Technology)
  • Mark de Berg (Technische Universiteit, Eindhoven)
  • Danny Chen (University of Notre Dame)
  • Tamal Dey (The Ohio State University) (co-chair)
  • Vida Dujmović (Carleton University)
  • David Eppstein (University of California, Irvine)
  • Leonidas Guibas (Stanford University)
  • Sylvain Lazard (INRIA, Nancy Grand Est)
  • Dinesh Manocha (The University of North Carolina at Chapel Hill)
  • Steve Oudot (INRIA Saclay)
  • Konrad Polthier (Freie Universität Berlin)
  • Edgar Ramos (Universidad Nacional de Colombia, Medellín)
  • Jian Sun (Tsinghua University)
  • Takeshi Tokuyama (Tohoku University)
  • Yusu Wang (The Ohio State University)
  • Max Wardetzky (University of Göttingen)
  • Sue Whitesides (University of Victoria, British Columbia) (co-chair)

Call for Video and Multimedia Presentations

Video and multimedia presentations are sought for the 21st Annual Video and Multimedia Review of Computational Geometry, to accompany the 28th Annual Symposium on Computational Geometry. This review showcases the use of visualization in computational geometry for exposition and education, for visual exploration of geometry in research, and as an interface and a debugging tool in software development. Algorithm animations, visual explanations of structural theorems, descriptions of applications of computational geometry, and demonstrations of software systems are all appropriate.

Three to five minutes is ideal for most presentations; eight minutes is the upper limit. Accepted video and multimedia presentations will have an abstract in the published conference proceedings; video/multimedia authors will have an opportunity to present their work at the Symposium during a dedicated video session. Accepted presentations will be available online in various formats in a web proceedings. See http://www.computational-geometry.org/ for examples of previous years' proceedings.

Submissions of video clips in QuickTime or MPEG-4 compressed formats (e.g., XviD or DivX version 6) are encouraged. We also encourage submissions of Macromedia Flash, Java applets, and limited forms of other multimedia or software. These formats must come with a script that will allow them to be distributed in both interactive and canned Quicktime or MPEG video formats. In case of doubt, please email the Video and Multimedia Program chair.

Each submission should include a one or two-page description of the material shown in the presentation, and where applicable, the techniques used in the implementation. The final two-page descriptions must be formatted according to the guidelines for proceedings. LaTeX style files will be provided to authors of accepted presentations.

Submission

Submissions should be deposited online where they are accessible through the web or via FTP. Send email to the Video/Multimedia committee chair, Christian Knauer by 23:59 Honolulu Time, Monday, February 27, 2012, with the following information: the names and institutions of the authors, the email address of the corresponding author, and instructions for downloading the submission. For ease of sharing and viewing, we encourage (but do not require) that each submission be uploaded to YouTube, and that the corresponding URL be included with the submission.

We explicitly encourage video/multimedia submissions that support papers submitted to the Symposium. Submitted papers and associated video/multimedia submissions will be treated entirely separately by the respective committees: acceptance or rejection of one will not influence acceptance or rejection of the other.

Authors will be notified of acceptance or rejection, and given reviewers' comments by March 8, 2012. For each accepted submission, the final version of the 2-page textual description will be due by March 22, 2012 (electronically) for inclusion in the proceedings. Final versions of accepted video/multimedia presentations will be due April 26, 2012 in the best format available.

Important Dates

  • Feb. 27, 2012: Video and Multimedia submissions due
  • Mar. 8, 2012: Notification for Video/MM submissions (23:59 Honolulu time)
  • Mar. 22, 2012: Camera-ready video/MM abstracts due
  • Apr. 26, 2012: Final versions of video/MM presentations due

Video and Multimedia Presentation Program Committee

  • Helmut Alt -Freie Universität Berlin
  • Sandor Fekete - TU Braunschweig
  • Panos Giannopoulos - Universität Bayreuth
  • Xavier Goaoc - INRIA Nancy Grand Est
  • Rolf Klein - Universität Bonn
  • Christian Knauer (chair) - Universität Bayreuth
  • Joseph S. B. Mitchell - SUNY Stony Brook
  • Bettina Speckmann - TU Eindhoven
  • Fabian Stehn - Universität Bayreuth
  • Alexander Wolff - Universität Würzburg

SOCG 2012 Local Arrangements

Jack Snoeyink, Chair

SOCG Steering Committee (2009-2012)

  • Jack Snoeyink, chair (University of North Carolina)
  • Mark de Berg, secretary (TU Eindhoven)
  • Joe Mitchell (SUNY Stony Brook)
  • Guenter Rote (FU Berlin)
  • Monique Teillaud (INRIA Sophia Antipolis - Méditerranée)

Posted at 09:46 AM in Computational Geometry | | Comments (0)

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September 13, 2011

Geometry and topology at SODA 2012

Here's a selection of computational geometry and topology papers accepted to SODA 2012. As usual, this list is neither exclusive nor exhaustive; for many papers, I'm just guessing about the content from the title and/or authors.

Geometry

Yes, most data structure papers count.

  • The maximum number of faces of the Minkowski sum of two convex polytopes
    Menelaos I. Karavelas and Eleni Tzanaki
  • Physarum Can Compute Shortest Paths
    Vincenzo Bonifaci, Kurt Mehlhorn, and Girish Varma
  • A Near-Linear Algorithm for Projective Clustering Integer Points
    Kasturi Varadarajan and Xin Xiao
  • On a Linear Program for Minimum-Weight Triangulation
    Arman Yousefi and Neal Young
  • Jaywalking your Dog - Computing the Fréchet Distance with Shortcuts
    Anne Driemel and Sariel Har-Peled
  • I/O-Efficient Data Structures for Colored Range and Prefix Reporting
    Kasper Green Larsen and Rasmus Pagh
  • Sparser Johnson-Lindenstrauss Transforms
    Daniel Kane and Jelani Nelson
  • Information Dissemination via Random Walks in d-Dimensional Space
    Henry Lam, Zhenming Liu, Michael Mitzenmacher, Xiaorui Sun, and Yajun Wang
  • Fast zeta transforms for point lattices
    Andreas Björklund, Thore Husfeldt, Petteri Kaski, Mikko Koivisto, Jesper Nederlof, and Pekka Parviainen
  • Partial match queries in random quadtrees
    Nicolas Broutin, Ralph Neininger, and Henning Sulzbach
  • Packing anchored rectangles
    Adrian Dumitrescu and Csaba Toth
  • Confluent Persistence Revisited
    Sebastien Collette, John Iacono, and Stefan Langerman
  • Using Hashing to Solve the Dictionary Problem (In External Memory)
    John Iacono and Mihai Patrașcu
  • Submatrix maximum queries in Monge matrices and Monge partial matrices, and their applications
    Haim Kaplan, Shay Mozes, Yahav Nussbaum, and Micha Sharir
  • Computing distance between piecewise linear bivariate functions
    Boris Aronov and Guillaume Moroz
  • Algorithms and Data Structures for the Transportation Problem in Geometric Settings
    R Sharathkumar and Pankaj Agarwal
  • Fully Persistent B-trees
    Gerth Stølting Brodal, Spyros Sioutas, Konstantinos Tsakalidis, and Kostas Tsichlas
  • Dimension reduction for finite trees in l_1
    James Lee, Arnaud De Mesmay, and Mohammad Moharrami
  • Bidimensionality and Geometric Graphs
    Fedor V. Fomin, Daniel Lokshtanov, and Saket Saurabh

Topology

Yes, most planar graph papers count.

  • Computing all maps into a sphere
    Martin Cǎdek, Marek Krčál, Jiří Matoušek, Francis Sergeraert, Lukáš Vokřínek, and Uli Wagner
  • Exact Distance Oracles for Planar Graphs
    Shay Mozes and Christian Sommer
  • Spanning closed walks and TSP in 3-connected planar graphs
    Ken-Ichi Kawarabayashi and Kenta Ozeki
  • Approximate Tree Decompositions of Planar Graphs in Linear Time
    Frank Kammer and Torsten Tholey
  • Finding an induced path of given parity in planar graphs in polynomial time
    Marcin Kaminski and Naomi Nishimura
  • Near optimal distance oracle for planar digraphs avoiding a failed node or link
    Utkarsh Lath, Surender Baswana, and Anuradha Mehta
  • Global Minimum Cuts in Surface Embedded Graphs
    Jeff Erickson, Kyle Fox, and Amir Nayyeri
  • The Maximum Degree of Random Planar Graphs
    Michael Drmota, Omer Gimenez, Marc Noy, Konstantinos Panagiotou, and Angelika Steger
  • Local Homology Transfer and Stratification Learning
    Paul Bendich, Bei Wang, and Sayan Mukherjee

Posted at 03:02 AM in Computational Geometry, Theoretical computer science | | Comments (1)

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April 12, 2011

Geometry and data structures at WADS 2011

The list of papers accepted to WADS 2011 is out. Here are the papers I could identify from the titles as either computational geometry or data structures. As usual, I can't guarantee that these lists are either exclusive or exhaustive; if a paper qualified for both lists, I just picked one. Sorry if I missed your paper.

Congratulations to all the authors, but especially to my PhD student Kyle Fox on his first solo paper, his second student-only paper, and his second paper!

Computational Geometry

  • Mohammad Ali Abam, Mark De Berg, and Amirali Khosravi.
    Piecewise-Linear Approximations of Uncertain Functions

  • Patrizio Angelini, Till Bruckdorfer, Marco Chiesa, Fabrizio Frati, Michael Kaufmann, and Claudio Squarcella.
    On the Area Requirements of Euclidean Minimum Spanning Trees

  • Spyros Angelopoulos, Alejandro Lopez-Ortiz, and Konstantinos Panagiotou.
    Multi-target Ray Searching Problems

  • Esther M. Arkin, Claudia Dieckmann, Christian Knauer, Joseph S. B. Mitchell, Valentin Polishchuk, Lena Schlipf, and Shang Yang.
    Convex Transversals

  • Boris Aronov and Muriel Dulieu.
    How to Cover a Point Set with a V-Shape of Minimum Width

  • Boris Aronov, Muriel Dulieu, and Ferran Hurtado.
    Witness Rectangle Graphs

  • Mark de Berg, Amirali Khosravi, Sander Verdonschot, and Vincent Van Der Weele.
    On Rectilinear Partitions with Minimum Stabbing Number

  • Therese Biedl, Stephane Durocher, Celine Engelbeen, Samuel Fiorini, and Maxwell Young.
    Faster Optimal Algorithms For Segment Minimization With Small Maximal Value

  • Therese Biedl and Lesvia Elena Ruiz Velázquez.
    Orthogonal cartograms with few corners per face

  • Markus Bläser, Bodo Manthey, and B. V. Raghavendra Rao.
    Smoothed Analysis of Partitioning Algorithms for Euclidean Functionals

  • Prosenjit Bose, Paz Carmi, Mirela Damian, Robin Flatland, Matthew Katz, and Anil Maheshwari.
    Switching to Directional Antennas with Constant Increase in Radius and Hop Distance

  • Kevin Buchin, David Eppstein, Maarten Löffler, Martin Nöllenburg, and Rodrigo Silveira.
    Adjacency-Preserving Spatial Treemaps

  • Erin Chambers, Sandor Fekete, Hella-Franziska Hoffmann, Dimitri Marinakis, Joseph Mitchell, Venkatesh Srinivasan, Ulrike Stege, and Sue Whitesides.
    Connecting a Set of Circles with Minimum Sum of Radii

  • Timothy M. Chan and Vinayak Pathak.
    Streaming and Dynamic Algorithms for Minimum Enclosing Balls in High Dimensions

  • Danny Z. Chen and Haitao Wang.
    New Algorithms for 1-D Facility Location and Path Equipartition Problems

  • Tobias Christ.
    Beyond Triangulation: Covering Polygons with Triangles

  • Atlas F. Cook IV, Anne Driemel, Sariel Har-Peled, Jessica Sherette, and Carola Wenk.
    Computing the Fréchet Distance Between Folded Polygons

  • Anne Driemel, Herman Haverkort, Maarten Löffler, and Rodrigo Silveira.
    Flow Computations on Imprecise Terrains

  • David Eppstein, Michael Goodrich, and Maarten Löffler.
    Tracking Moving Objects with Few Handovers

  • P. Thomas Fletcher, John Moeller, Jeff Phillips, and Suresh Venkatasubramanian.
    Horoball Hulls and Extents in Positive Definite Space

  • Jie Gao and Dengpan Zhou.
    Resilient and Low Stretch Routing Through Embedding into Tree Metrics

  • Andreas Gemsa, Martin Nöllenburg and Ignaz Rutter.
    Consistent Labeling of Rotating Maps

  • Michael Hoffmann, Micha Sharir, Adam Sheffer, Csaba Toth, and Emo Welzl.
    Counting Plane Graphs: Flippability and its Applications

  • Allan Jorgensen, Maarten Löffler, and Jeff Phillips.
    Geometric Computations on Indecisive Points

  • Pegah Kamousi, Timothy Chan, and Subhash Suri.
    Closest Pair and the Post Office Problem for Stochastic Points

  • Yakov Nekrich.
    A Fast Algorithm for Three-Dimensional Layers of Maxima Problem

  • Valentin Polishchuk and Mikko Sysikaski.
    Faster algorithms for minimum-link paths with restricted orientations

  • Shay Solomon.
    The MST of Symmetric Disk Graphs (in Arbitrary Metrics) is Light

Data Structures

  • Paul Christiano, Erik D. Demaine, and Shaunak Kishore.
    Lossless Fault-Tolerant Data Structures with Additive Overhead

  • Pooya Davoodi, Gerth Stølting Brodal, and Srinivasa Rao Satti.
    Path Minima Queries in Dynamic Weighted Trees

  • Johannes Fischer.
    Inducing the LCP-Array

  • Kyle Fox.
    Upper Bounds for Maximally Greedy Binary Search Trees

  • Michael Fredman.
    On the matter of dynamic optimality in an extended model for tree access operations

  • Jing He, Hongyu Liang, and Guang Yang.
    Reversing Longest Previous Factor Tables is Hard

  • Meng He and Ian Munro.
    Space Efficient Data Structures for Dynamic Orthogonal Range Counting

  • Brent Heeringa, Marius Cătălin Iordan, and Louis Theran.
    Searching in Dynamic Tree-Like Partial Orders

  • Shoshana Neuburger and Dina Sokol.
    Succinct 2D Dictionary Matching With No Slowdown

  • Yahav Nussbaum.
    Improved Distance Queries in Planar Graphs

Posted at 10:47 PM in Computational Geometry, Theoretical computer science | | Comments (0)

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March 23, 2011

Theory of Computation as a Lens on the Sciences

I was asked to post this on behalf of Dick Karp, the conference organizer. Sounds like a fun conference; I wish I could go!

Theory of Computation as a Lens on the Sciences

University of California, Berkeley, May 7-8, 2011

Registration for this conference will begin on Thursday, March 31 at http://www.eecs.berkeley.edu/IPRO/lensconference2011. There is no charge for registration. We hope you will be able to attend.

The conference will explore the theme that many processes in the physical, biological, engineering, and social sciences involve information processing at a fundamental level and can be studied through computational models. A conference held in Berkeley in May, 2002 helped crystallize this theme as a promising direction of research, and this second conference will highlight the impact of the computational lens on areas such as quantum information science, statistical physics, social networks, economics and game theory, genetics, molecular biology, evolutionary biology, cognitive science, mathematics, statistics and machine learning.

Featured Speakers:

  • Professor Leslie Valiant, Harvard University
    Evolution as a Form of Learning

  • Professor Ehud Kalai, Northwestern University
    Robustness and Complexity in Games

  • Professor Christos Papadimitriou, UC Berkeley
    Algorithms, Games, and the Internet

  • Professor Michael Kearns, University of Pennsylvania
    Analysis of Social Networks

  • Professor Mark Newman, University of Michigan
    Structure and Dynamics of Networks in the Real World

  • Professor Michael Jordan, UC Berkeley
    On Joint Inference of Phylogeny and Alignment

  • Professor David Haussler, UC Santa Cruz
    Cancer Genomics

  • Professor Andrea Montanari, Stanford
    Statistical Physics and Computation

  • Professor Daniel Fisher, Stanford
    Dynamics of Evolutionary Processes

  • Dr. Jonathan Oppenheim, University of Cambridge
    Computer Science as a Lens on Quantum Theory

  • Professor Umesh Vazirani, UC Berkeley
    How Does Quantum Mechanics Scale?

  • Professor Lior Pachter, UC Berkeley
    A Computational Approach to Discovery in Biology

  • Professor Tandy Warnow, UT, Austin
    Ultra-Large Phylogenetic Estimation

  • Professor Sebastien Roch, UCLA
    Large Phylogenies from Short Sequences: Recent Theoretical Insights

If you have questions, please contact Heather Levien, assistant to Professor Richard Karp, [email protected], (510) 642-3497.

Posted at 04:46 PM in Theoretical computer science | | Comments (0)

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