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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.

March 2020


From Daniel Lemire's Blog

We released simdjson 0.3: the fastest JSON parser in the world is even better!

We released simdjson 0.3: the fastest JSON parser in the world is even better!

Last year (2019), we released the simjson library. It is a C++ library available under a liberal license (Apache) that can parse JSON documents very fast. How fast? We reach and exceed 3 gigabytes per second in many instances…


From The Eponymous Pickle

Webinar from iRobot, IFTTT on the Smart Home

Webinar from iRobot, IFTTT on the Smart Home

Recently signed up for this and missed it, of interest: 

Checking in to see if you watched the replay of our smart home webinar featuring iRobot.

It features iRobot's CTO, Chris Jones, talking in-depth about the future of the smart…


From Computational Complexity

Length of Descriptions for DFA, NFA, CFG



We will be looking at the size of descriptions



 For DFAs and NFAs this is the number of states.



For CFG's we will assume they are in Chomsky Normal Form. So for this post CFG means CFG in Chomsky normal form.



1) It is known…


From The Eponymous Pickle

Procter Donates Face Masks, Hand Sanitizer

Procter Donates Face Masks, Hand Sanitizer

UPDATE: P&G to make and donate face masks, hand sanitizer in response to coronavirus  By Barrett J. Brunsman  – Staff reporter, Cincinnati Business Courier

Mar 26, 2020, 2:47pm EDT Updated Mar 26, 2020, 6:14pm EDT
Instead of selling…


From The Computing Community Consortium Blog

CCC @ AAAS 2020 – New Approaches to Fairness in Automated Decision Making

CCC @ AAAS 2020 – New Approaches to Fairness in Automated Decision Making

The last decade has seen the increased use of machine learning and data science to make decisions—from figuring out which YouTube video to recommend to deciding whom to give a loan, automated decisions are now everywhere. However…


From insideHPC

SIAM Announces Class of 2020 Fellows

SIAM Announces Class of 2020 Fellows

Today the Society for Industrial and Applied Mathematics (SIAM) announced the 2020 Class of SIAM Fellows. These distinguished members were nominated for their exemplary research as well as outstanding service to the community…


From BLOG@CACM

The ASPLOS 2020 Online Conference Experience

The ASPLOS 2020 Online Conference Experience

CS pioneered it. Should we use it?


From The Computing Community Consortium Blog

Open Access to ACM Digital Library During Coronavirus Pandemic

Open Access to ACM Digital Library During Coronavirus Pandemic

By Cherri Pancake, ACM President As the coronavirus/COVID-19 pandemic continues, we at ACM would like to do what we can to help support the computing community. Many computing researchers and practitioners are now working remotely…


From insideHPC

Russian Supercomputer Joins the Fight Against COVID-19

Russian Supercomputer Joins the Fight Against COVID-19

An international research team of scientists – from Russia, Finland, Italy, China, Japan and Canada is using a recently upgraded HPC system at the Joint Supercomputer Center of the Russian Academy of Sciences to develop diagnostics…


From Computer Science Teacher - Thoughts and Information From Alfred Thompson

Changing How We Think About School

Changing How We Think About School

What my school is doing is trying to replicate the brick-and-mortar model in the online world. Other schools are doing something more like “correspondence school” We fall back on old models at times like this when the world is…


From insideHPC

Supercomputing the Spread of Contagions on Airplanes

Supercomputing the Spread of Contagions on Airplanes

Researchers are using supercomputers to model how contagions can spread onboard aircraft. Using Frontera's GPU subsystem, the researchers were able to get the computation time down to 1.5 minutes. "Using the GPUs turned out to…


From insideHPC

Video: NVIDIA to Accelerate the HPC-AI Convergence

Video: NVIDIA to Accelerate the HPC-AI Convergence

Gunter Roeth from NVIDIA gave this talk at ML4HPC 2020. "The growing adoption of NVIDIA Volta GPU by the Top500 Supercomputers highlights the need of computing acceleration for this HPC & AI convergence. Many projects today demonstrate…


From The Eponymous Pickle

Towards a Taxonomy for Automated Assistants

Towards a Taxonomy for Automated Assistants

Like the idea of identifying and constructing tasks for assistants so they can be more readily be challenged and compared.   This article suggests this be done and gives some examples.

A Taxonomy of Automated Assistants
By Jerrold…


From Schneier on Security

Clarifying the Computer Fraud and Abuse Act

Clarifying the Computer Fraud and Abuse Act

A federal court has ruled that violating a website's tems of service is not "hacking" under the Computer Fraud and Abuse Act. The plaintiffs wanted to investigate possible racial discrimination in online job markets by creating…


From insideHPC

D-Wave Offers Free Quantum Cloud Access for Global Response to COVID-19

D-Wave Offers Free Quantum Cloud Access for Global Response to COVID-19

Today D-Wave Systems announced the immediate availability of free access to its quantum systems via the Leap quantum cloud service for anyone working on responses to the COVID-19 crisis. "It is promising to accelerate the solution…


From The Eponymous Pickle

Can Tech Disrupt the Virus?

Can Tech Disrupt the Virus?

Here is a challenge:  Can AI and Tech confront and disrupt evolved biology in new ways?  Can we think beyond methods that currently exist? 

Tech's Next Disruption Target: The Coronavirus
The Wall Street Journal
Asa Fitch; Rolfe
March…


From The Eponymous Pickle

Hybrid AI Examined

Hybrid AI Examined

Big proponent of the idea.   Neural methods solve specific problems well, yet we solve many other problems symbolically, logically.  Math gives us solutions with algorithms, but the applied use of these methods is logically driven…


From The Eponymous Pickle

Anomaly Response: How we Respond to the Unexpected

Anomaly Response: How we Respond to the Unexpected

Intriguing piece.   Made me think of our current predicament as well.    Can we model human adaptation to expected and unexpected events?   I like the notion of exploring different responses.  Would add then we could simulate…


From Computer Science Teacher - Thoughts and Information From Alfred Thompson

Teaching From Home–Day 11–Is this our new normal?

Teaching From Home–Day 11–Is this our new normal?

Well. we’re definitely going to stay online until May. Our last week in April is a vacation week. I am hoping it still is. What will May bring? I have no idea. What about June? My school usually runs into June for a week to ten…


From BLOG@CACM

The Rise of the Data Engineer

The Rise of the Data Engineer

The combination of AI and cloud infrastructure is changing the roles of certain engineers and creating a new requirement that demands an entirely new engineering specialty.


From insideHPC

Registration Opens for Stanford HPC Conference Virtual Event

Registration Opens for Stanford HPC Conference Virtual Event

Registration is now open for the Stanford HPC Conference. The two day 'condensed' agenda combines thought leadership and practical insights on HPC, AI, Data Science and much more. The virtual event takes place April 21-22. "The…


From insideHPC

Lifebit Provides Free Cloud, Data Hosting & Analysis Tools to COVID-19 Researchers

Lifebit Provides Free Cloud, Data Hosting & Analysis Tools to COVID-19 Researchers

Today Lifebit Biotech announced it is providing its premium Lifebit CloudOS license free to all researchers and teams working on COVID-19 efforts, including diagnostics, treatments, and vaccines. As increasing demand for widely…


From The Eponymous Pickle

New Rules for Remote Work

New Rules for Remote Work

Reasonably done look at things that make sense,  we have done much remote work for some time now, years in many cases, but now its just lots more of it.

HBRWK: Business Research for Business Leaders

The New Rules for Remote Work…


From insideHPC

Xilinx Alveo U50 Accelerator Cards come to Nimbix Cloud with Broad Application Support

Xilinx Alveo U50 Accelerator Cards come to Nimbix Cloud with Broad Application Support

Today Nimbix announced the availability of Xilinx Alveo U50 Accelerator Cards on the Nimbix Cloud. "Nimbix has paved the way for FPGA-accelerated cloud computing and today leads with the broadest portfolio of cloud FPGA solutions…


From insideHPC

NCSA Joins Nationwide Collaboration to Combat COVID-19

NCSA Joins Nationwide Collaboration to Combat COVID-19

blue watersNCSA is joining C3.ai, Microsoft Corporation, and research institutions across the country as part of the new C3.ai Digital Transformation Institute (C3.ai DTI). This new institute, a multi-disciplinary effort focused on artificial…


From The Eponymous Pickle

Virtualitics for Insight Extraction

Virtualitics for Insight Extraction

A company of interest for advanced data visualization.  We worked with them in the Enterprise.

Virtualitics Selected fof the Air Force Strategic $7 Million Award
March 16, 2020 By Amy Gunzenhauser

Virtualitics is pleased to announce…


From Schneier on Security

Privacy vs. Surveillance in the Age of COVID-19

Privacy vs. Surveillance in the Age of COVID-19

The trade-offs are changing: As countries around the world race to contain the pandemic, many are deploying digital surveillance tools as a means to exert social control, even turning security agency technologies on their own…


From insideHPC

UKRI Awards ARCHER2 Supercomputer Services Contract

UKRI Awards ARCHER2 Supercomputer Services Contract

UKRI has awarded contracts to run elements of the next national supercomputer, ARCHER2, which will represent a significant step forward in capability for the UK’s science community. ARCHER2 is provided by UKRI, EPCC, Cray (an…


From Gödel's Lost Letter and P=NP

Logic and Star-Free, Part Deux

A visual proof with no abstract-algebra overhead Composite crop of src1, src2 Dominique Perrin and Jean-Éric Pin are French mathematicians who have done significant work in automata theory. Their 1986 paper “First-Order Logic…


From The Eponymous Pickle

Data Resources: Our World in Data

Data Resources:  Our World in Data

As part of a larger project that is looking at Data Sources, Open Source Data, Data as an Asset, Data Quality, Data for Machine Learning, Semantic Data, Knowledge Mapping, Metadata and related topics.  This looks to be a great…

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