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From Communications of the ACM

Technical Perspective: Progress in Spatial Computing for Flood Prediction

There are few algorithms for multi-flow graphs beyond flow accumulation. The authors of "Flood-Risk Analysis on Terrains" take a big step to fill this knowledge...

Flood-Risk Analysis on Terrains
From Communications of the ACM

Flood-Risk Analysis on Terrains

In this paper, we study a number of flood-risk related problems, give an overview of efficient algorithms for them, as well as explore the efficacy and efficiency...

From Communications of the ACM

Technical Perspective: Computing the Value of Location Data

"Computing Value of Spatiotemporal Information," by Heba Aly et al., describes a technique for computing the monetary value of a person's location data for a potential...

Computing Value of Spatiotemporal Information
From Communications of the ACM

Computing Value of Spatiotemporal Information

We investigate the intrinsic value of location data in the context of strong privacy, where location information is only available from end users via purchase. ...

From Communications of the ACM

Technical Perspective: To Do or Not To Do: Extending SQL with Integer Linear Programming?

"Scalable Computation of High-Order Optimization Queries," by Brucato et al., makes a case for marrying the well-established paradigms of constrained optimization...

Scalable Computation of High-Order Optimization Queries
From Communications of the ACM

Scalable Computation of High-Order Optimization Queries

We present a complete system that supports package queries, a new query model that extends traditional database queries to handle complex constraints and preferences...

From Communications of the ACM

Technical Perspective: Moving Spectrum

The incentive auction scenario provides the backdrop for the breathtaking research contribution presented by Newman et al. in "Deep Optimization for Spectrum Repacking...

Deep Optimization For Spectrum Repacking
From Communications of the ACM

Deep Optimization For Spectrum Repacking

This paper describes the process by which we built the SAT-based Feasibility Checker, a crucial element of the 2016-17 U.S. FCC "incentive auction" design.

From Communications of the ACM

Technical Perspective: Pricing Information (and Its Implications)

"A Theory of Pricing Private Data," by Chao Li, et al., introduces a fascinating and complicated issue that arises on the buy-side of the market when buyers are...

A Theory Of Pricing Private Data
From Communications of the ACM

A Theory Of Pricing Private Data

We describe the foundations of a market in which those seeking access to data must pay for it and individuals are compensated for the loss of privacy they may suffer...

From Communications of the ACM

Technical Perspective: Solving Imperfect Information Games

"Heads-Up Limit Hold'em Poker Is Solved," by Michael Bowling, et al., takes the counterfactual regret minimization method for approximating a Nash equilibrium to...

Heads-Up Limit Hold'em Poker Is Solved
From Communications of the ACM

Heads-Up Limit Hold'em Poker Is Solved

This paper is an extended version of our original 2015 Science article, with additional results showing Cepheus' in-game performance against computer and human...

From Communications of the ACM

Technical Perspective: Shedding New Light on an Old Language Debate

"A Large-Scale Study of Programming Languages and Code Quality in GitHub," by Baishakhi Ray, et al., studies whether programming language choice and code quality...

A Large-Scale Study of Programming Languages and Code Quality in Github
From Communications of the ACM

A Large-Scale Study of Programming Languages and Code Quality in Github

What is the effect of programming languages on software quality? In this study, we gather a very large data set from GitHub in an attempt to shed some empirical...

From Communications of the ACM

Technical Perspective: Broadening and Deepening Query Optimization Yet Still Making Progress

"Multi-Objective Parametric Query Optimization," by Immanuel Trummer and Christoph Koch is a remarkable tour de force exploration of the combination of both parametric...

Multi-Objective Parametric Query Optimization
From Communications of the ACM

Multi-Objective Parametric Query Optimization

We propose a generalization of the classical database query optimization problem: multi-objective parametric query (MPQ) optimization.

From Communications of the ACM

Technical Perspective: What Led Computer Vision to Deep Learning?

We are in the middle of the third wave of interest in artificial neural networks as the leading paradigm for machine learning. "ImageNet Classification with Deep...

ImageNet Classification with Deep Convolutional Neural Networks
From Communications of the ACM

ImageNet Classification with Deep Convolutional Neural Networks

In the 1980s backpropagation did not live up to the very high expectations of its advocates. Twenty years later, we know what went wrong: for deep neural networks...

From Communications of the ACM

Technical Perspective: Functional Compilers

"Exploiting Vector Instructions with Generalized Stream Fusion" points out that stream fusion by itself is not well suited for generating bulk instructions such...

Exploiting Vector Instructions with Generalized Stream Fusion
From Communications of the ACM

Exploiting Vector Instructions with Generalized Stream Fusion

Programmers should not have to sacrifice code clarity or good software engineering practices to obtain performance. This work shows how to attain this goal for...
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