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From Communications of the ACM

Technical Perspective: Data Stream Processing - When You Only Get One Look

The database and systems communities have made great progress in developing database systems that allow us to store and query huge amounts of data. Real-time analysis...

Distinct-Value Synopses For Multiset Operations
From Communications of the ACM

Distinct-Value Synopses For Multiset Operations

The task of estimating the number of distinct values (DVs) in a large dataset arises in a wide variety of settings in computer science and elsewhere. We provide...

From Communications of the ACM

Technical Perspective: Relational Query Optimization: Data Management Meets Statistical Estimation

Relational systems have made it possible to query large collections of data in a declarative style through languages such as SQL. There is a key component that...

Statistical Analysis of Circuit Timing Using Majorization
From Communications of the ACM

Statistical Analysis of Circuit Timing Using Majorization

Future miniaturization of silicon transistors following Moore's Law may be in jeopardy as it becomes harder to precisely define the behavior and shape of nanoscale...

From Communications of the ACM

Technical Perspective: Where the Chips May Fall

The traditional approach to circuit design has been to build chips that work correctly at extreme-case process...

Does Distributed Development Affect Software Quality?
From Communications of the ACM

Does Distributed Development Affect Software Quality?: An Empirical Case Study of Windows Vista

Existing literature on distributed development in software engineering and other fields discusses various challenges,...

Apprenticeship Learning For Helicopter Control
From Communications of the ACM

Apprenticeship Learning For Helicopter Control

Autonomous helicopter flight is widely regarded to be a highly challenging control problem. As helicopters are highly unstable and exhibit complicated dynamical...

From Communications of the ACM

Technical Perspective: The Ultimate Pilot Program

In one scene from The Matrix, two leaders of the human resistance are trapped on the roof of a skyscraper. The only means of escape is by helicopter, which neither...

Two Hardware-Based Approaches For Deterministic Multiprocessor Replay
From Communications of the ACM

Two Hardware-Based Approaches For Deterministic Multiprocessor Replay

Modern computer systems are inherently nondeterministic due to a variety of events that occur during an execution. The lack of repeatability that arises from this...

From Communications of the ACM

Technical Perspective: Software and Hardware Support For Deterministic Replay of Parallel Programs


Integrating Nand Flash Devices Onto Servers
From Communications of the ACM

Integrating Nand Flash Devices Onto Servers

In this paper, we examine the use of Flash storage in the server domain. Wear-out has the potential to limit the use of Flash in this domain. To seriously consider...

From Communications of the ACM

Technical Perspective: Integrating Flash Devices

Flash memory nowadays seems to be in every discussion about system architecture. Sure enough, flash memory boasts...

From Communications of the ACM

Error Correction Up to the Information-Theoretic Limit

Ever since the birth of coding theory almost 60 years ago, researchers have been pursuing the elusive goal of constructing the "best codes," whose encoding introduces...

From Communications of the ACM

Technical Perspective: The Beauty of Error-Correcting Codes

Error-correcting codes are the means by which we compensate for interference in communication, and are essential for the accurate transmission and storage of digital...

Voyagers and Voyeurs
From Communications of the ACM

Voyagers and Voyeurs: Supporting Asynchronous Collaborative Visualization

This article describes mechanisms for asynchronous collaboration in the context of information visualization, recasting visualizations as not just analytic tools...

From Communications of the ACM

Technical Perspective: Finding and Telling Stories with Data

Visual analysis, a powerful method for finding and telling stories with data, is moving from research into widespread use.

From Communications of the ACM

Technical Perspective: One Size Fits All: An Idea Whose Time Has Come and Gone

Beginning in the early to mid-1980s the relational model of data has dominated the DBMS landscape. Moreover, descendents of...

Breaking the Memory Wall in MonetDB
From Communications of the ACM

Breaking the Memory Wall in MonetDB

In this paper, we report how research around the MonetDB database system has led to a redesign of database architecture in order to take advantage of modern hardware...

Polaris
From Communications of the ACM

Polaris: A System For Query, Analysis, and Visualization of Multidimensional Databases

In this paper, we address these demands by presenting the Polaris formalism, a visual query language for precisely describing a wide range of table-based graphical...

From Communications of the ACM

Technical Perspective: Safeguarding Online Information Against Failures and Attacks

Users need storage that is highly reliable (it is not lost) and highly available (accessible when needed). Guaranteeing...
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