Communications of the ACM
Latest Research
From Communications of the ACM
Technical Perspective: Images Everywhere Looking For Models
About 5,000 images per minute are uploaded to the photo-sharing site http://www.flickr.com/; over...
From Communications of the ACM
Technical Perspective: Complex Financial Products: Caveat Emptor
CDOs are examples of financial derivatives, with a value that depends on the underlying assets with which they are linked. These kinds of complex financial products...
From Communications of the ACM
Computational Complexity and Information Asymmetry in Financial Products
Securitization of cash flows using financial derivatives transformed the financial industry over the last three decades. Derivatives...
From Communications of the ACM
DRAM Errors in the Wild: A Large-Scale Field Study
While a large body of work exists on DRAM in lab conditions, little has been reported on real DRAM failures in large production clusters. In this paper, we analyze...
From Communications of the ACM
Technical Perspective: DRAM Errors in the Wild
In order to advance the field, knowledge of the types of memory errors at the system level, their frequencies, and conditions that exacerbate or are unrelated to...
From Communications of the ACM
The Sequence Memoizer
The sequence memoizer is a new hierarchical Bayesian model for discrete sequence data that captures long range dependencies and power-law characteristics, while...
From Communications of the ACM
Technical Perspective: Markov Meets Bayes
The history of probabilistic sequence models dates back to Markov at the turn of the last century. Though informed by decades of research...
From Communications of the ACM
Sora: High-Performance Software Radio Using General-Purpose Multi-Core Processors
Sora, a fully programmable software radio platform on commodity PC architectures, combines the performance and fidelity of hardware software-defined radio platforms...
From Communications of the ACM
Technical Perspective: Sora Promises Lasting Impact
The objective of Sora is to build a software defined radio that combines the performance and fidelity of hardware...
From Communications of the ACM
Nonparametric Belief Propagation
Probabilistic graphical models and algorithms for approximate inference have proven to be powerful tools in a wide range of applications in statistics and AI. However...
From Communications of the ACM
Technical Perspective: Belief Propagation
Nearly every modern tracking system is based on the seminal work of Rudolf Kalman who developed the optimal...
From Communications of the ACM
Difference Engine: Harnessing Memory Redundancy in Virtual Machines
Virtual machine monitors are a popular platform for Internet hosting centers and cloud-based compute services. But main memory is not amenable to multiplexed hardware...
From Communications of the ACM
Technical Perspective: A VM 'Engine' That Makes a Difference
The past decade has witnessed a renaissance in server virtualization. Diwaker Gupta et al. present a novel approach for significantly improving the efficiency of...
From Communications of the ACM
Censored Exploration and the Dark Pool Problem
The success and proliferation of dark pool stock exchanges have created challenging and interesting problems in algorithmic trading—in particular, the problem of...
From Communications of the ACM
Technical Perspective: Learning to Act in Uncertain Environments
The problem of decision making in an uncertain environment arises in many diverse contexts. The key issue in effectively solving problems like this is known as...
From Communications of the ACM
Toward Robotic Cars
Recent challenges organized by DARPA have induced a significant advance in technology for autopilots for cars; similar to those already used in aircraft and marine...
From Communications of the ACM
Technical Perspective: New Bar Set For Intelligent Vehicles
Sebastian Thrun gives us a glimpse into the design and implementation of two winning DARPA grand challenge entries...
From Communications of the ACM
Using the Forest to See the Trees: Exploiting Context For Visual Object Detection and Localization
Recognizing objects in images is an active area of research in computer vision. However, most of the algorithms for detecting objects perform an exhaustive search...
From Communications of the ACM
Technical Perspective: Seeing the Trees, the Forest, and Much More
Bristling with cameras, microphones, and other sensors, today's portable phones are nevertheless essentially deaf and...
From Communications of the ACM