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Communications of the ACM

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The blog archive provides access to past blog postings from Communications of the ACM and other sources by date.

August 2014


From Computational Complexity

Sixteen Years in the Making

Every paper has a story but Sunny Daniel's Arxiv paper from yesterday deserves a blog post. We begin in 1982 when Ravi Kannan proved that Σ2 (the problems computable in NP with an NP oracle) cannot have n2 size circuits. Kannan's


From The Computing Community Consortium Blog

Air Force Fiscal Year 2015 Young Investigator Research Program

The Air Force Office of Scientific Research (AFOSR)’s Young Investigator Research Program (YIP) supports scientists and engineers who have received Ph.D. or equivalent degrees in the last five years (on or after 1 May 2009) and…


From The Eponymous Pickle

Why Academics use Social Media

Why Academics use Social Media

A lengthy Nature report with many statistics.   Some surprising. I would further like to see why people outside, or just slightly outside a particular academic or technical field, use Social Media.  I frequently find myself in


From The Eponymous Pickle

Resilience and Data in the Supply Chain

Resilience and Data in the Supply Chain

In EBN: The need for what they call data maturity.  Well, yes, absolutely, all the data and metadata needs to be 'mature'.  But defining that can be a problem.  Especially an issue for informally managed metadata. Good examination


From The Eponymous Pickle

Complex Regulatory Environments

Complex Regulatory Environments

Have been examining Splunk (SPL) as it has been applied to a number of dynamic data problems. Impressed by it capabilities.  Both for its search engine-like examination of data, and for creating processes for data mining.  


From The Eponymous Pickle

Watson Discovery Advisor

Watson Discovery Advisor

Continued interest in how IBM Watson will be applied to real business problems.  There will be a demonstration today in NYC that we are following.   Quite an interesting claim to be able  find interesting patterns without direct


From Schneier on Security

Hacking Traffic Lights

Hacking Traffic Lights

New paper: "Green Lights Forever: Analyzing the Security of Traffic Infrastructure," Branden Ghena, William Beyer, Allen Hillaker, Jonathan Pevarnek, and J. Alex Halderman. Abstract: The safety critical nature of traffic infrastructure


From Putting People First

How EU leaders can listen to the views of their citizens expressed on Twitter

How EU leaders can listen to the views of their citizens expressed on Twitter

Vox Digitas By Jamie Bartlett, Carl Miller, David Weir, Jeremy Reffin, Simon Wibberley Report, 24 August 2014 ISBN 978-1-909037-63-2 Free download Over the last decade European citizens have gained a digital voice. Close to 350


From Daniel Lemire's Blog

Though unrefereed, arXiv has a better h-index than most journals…

Though unrefereed, arXiv has a better h-index than most journals…

Google provides a ranking of research venue per domain. For databases and information systems, they provide the top 20 venues according to their h-index. As part of their assessment, they chose to include arXiv: a repository


From My Biased Coin

Update on SOCG and ACM

Update on SOCG and ACM

I am happy to have an update on the SOCG/STOC colocation issue that arose last week.  Or, better said, Jeff Erickson has an update, the short summary of which is that it looks like there has now been some very useful clarification


From The Eponymous Pickle

Ad Targeting Based on Signal Strength

Ad Targeting Based on Signal Strength

In Adage:  Had not heard of this.  A device-based hidden context detection in mobile. " .... Facebook Targets Ads Based on Cell Signal Strength ... Social Network Ramping Up Ad Efforts in Emerging Markets ... ".  What other device


From The Eponymous Pickle

Kraft Product Breakthrough Innovation

Kraft Product Breakthrough  Innovation

In K@W:  Insightful thoughts about how innovation is important and essential in CPG.   What drives it when you have lots of well known current brands?   How should you invest? What is the meaning of a product category in this


From The Eponymous Pickle

Transparent Solar Power

Transparent Solar Power

In IEEE Spectrum:  Transparent tiles that can capture solar power?  Work underway at Michigan State.


From Computer Science Teacher – Thoughts and Information From Alfred Thompson

Yet More Block Programming Languages

Yet More Block Programming Languages

I saw this announcement on Facebook first but I probably just missed seeing it on the email list. At this stage I have to wonder why? Why more of the same? Do we really know that these languages work and if so for what definition


From The Eponymous Pickle

Advances in BioChips: Organoids

Advances in BioChips: Organoids

In Wired:  Overview of advances in biochips, chips that mimic the activity of the body, used for the development and testing of drugs.   I note the term new to me: Organoids.   We participated in several examinations of these


From The Eponymous Pickle

On Seeking Patterns in Big Data

On Seeking Patterns in Big Data

Interesting short case study using Porsche as an example.  Examining the concept.


From The Eponymous Pickle

Social Hives for the Supply Chain

Social Hives for the Supply Chain

Concept term I had not heard of: " .... The age-old problem of disconnection in the supply chain can be eased through the use of social media, argues Tony Martins. He recommends powerful but somewhat informal "hives": "A hive


From Schneier on Security

Security Flaws in Rapiscan Full-Body Scanners

Security Flaws in Rapiscan Full-Body Scanners

Security researchers have finally gotten their hands on a Rapiscan backscatter full-body scanner. The results aren't very good. Website with paper and images. News articles and commentary. Note that these machines have been replaced


From Putting People First

Service design toolkit

Service design toolkit

The toolkit for service design is an introduction to the methodology of service design. With a simple step-by-step plan it offers you a practical do-it-yourself guide. The kit contains workshop templates, posters, a manual and


From The Eponymous Pickle

Smartstones on the Daily Show Tonight

Smartstones on the Daily Show Tonight

Heard this somewhat late, but a startup I am connected with will be featured on the Daily Show tonight:Full information." ... Someone in our Smartstones "early bird" VIP community is going to be on the Jon Stewart Daily ShowDavid


From Gödel's Lost Letter and P=NP

Who Invented Pointers, Amortized Complexity, And More?

Some algorithmic tricks were first invented in complexity theory Andrey Kolmogorov, Fred Hennie, Richard Stearns, and Walter Savitch are all famous separately; but they have something in common. Read on, and see. Today I wish


From My Biased Coin

New Article on arxiv on Equitability and MIC

New Article on arxiv on Equitability and MIC

We recently put on arxiv a new draft on "Theoretical Foundations of Equitability and the Maximal Information Coefficient".  This is some follow-on work to a paper that appeared in Science a couple of years ago, where we introduced


From The Eponymous Pickle

Data as a Natural Resource

Data as a Natural Resource

In the recent ACM Bulletin:Matthias Kaiserswerth is Director of IBM Research - Zurich. ....How would you expand on your statement in a recent blog post that data is the new natural resource, and what implications does this development


From The Eponymous Pickle

Netflix Big Data: The Golden Data

Netflix Big Data: The Golden Data

Piece on how Netflix uses big data analysis.  To derive Golden Data.  I like the term, but can it be effectively derived?" ... “It’s not as far away from the world of packaged goods or technology or services as you think… understanding


From Computer Science Teacher – Thoughts and Information From Alfred Thompson

Rotate the Cell Phones

Rotate the Cell Phones

One of the things I am working hard at this year is making things more clear to students. I want them to understand concepts and why they are important and useful. Of course one issue with teaching computing is that experienced


From The Computing Community Consortium Blog

Working towards a Healthy Pipeline: Encouraging CS Undergraduates from U.S. Institutions to Consider Graduate School and Careers in Research

The following is a special contribution to this blog by CCC Council Member Ran Libeskind-Hadas and CRA Board Member Susanne Hambrusch, Co-Chairs of CRA-E. The CRA Education Committee’s (CRA-E) mission is to address society’s

      


From Schneier on Security

Security by Obscurity at Healthcare.gov Site

Security by Obscurity at Healthcare.gov Site

The White House is refusing to release details about the security of healthcare.gov because it might help hackers. What this really means is that the security details would embarrass the White House....


From Schneier on Security

Eavesdropping Using Smart Phone Gyroscopes

Eavesdropping Using Smart Phone Gyroscopes

The gyroscopes are sensitive enough to pick up acoustic vibrations. It's crude, but it works. Paper. Wired article. Hacker News thread....


From The Eponymous Pickle

NASA and Swarms

NASA and Swarms

More by NASA on the use of swarms.  Nice to see work of this type still coming out of the space agency.  See the mention of the use of simulation methods to test the swarm operation.  See my previous posts on the earthbound potential


From The Eponymous Pickle

Unilever Data Visualization and Analytics for Business Process

Unilever Data Visualization and Analytics for Business Process

Not very much detail, mention of Unilever connection to business process," ... In 2010, the company set itself the target of doubling its revenues in a decade or less – without doubling its costs. According to Greg Swimer, Vice

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