Evaluating user perceptions of location-tracking and location-awareness services.
Research and Advances
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Promoting Personal Responsibility For Internet Safety
Online safety is everyone's responsibility---a concept much easier to preach than to practice.
Requirements Engineering in New Product Development
How effective are the socio-technical interactions in developing new products?
Peer-Based Computer-Supported Knowledge Refinement: An Empirical Investigation
Nonexpert peer-based knowledge refinement, it turns out, is just as helpful as expert-centric knowledge refinement for improving the quality of results.
How managerial prompting, group identification, and social value orientation affect knowledge-sharing behavior.
IT Diffusion in Developing Countries
Policymakers need to recognize that developing economies have different drivers for IT investment than their wealthier brethren.
The Myths and Truths of Wireless Security
Technology will never cure all wireless security ills. It will take a coordinated effort involving corporations, manufacturers, employers, and end users to fight the fight.
Managing Large Collections of Data Mining Models
Data analysts and naive users alike in information-intensive organizations need automated ways to build, analyze, and maintain very large collections of data mining models.
Are People Biased in Their Use of Search Engines?
Assessing user search behavior when deciding which links to follow in rank-ordered results lists.
Municipal Broadband Wireless Networks
"...people lack many things: jobs, shelter, food, health care and drinkable water. Today, being cut off from basic telecommunications services is a hardship almost as acute as these other deprivations, and may indeed reduce the chances of finding remedies to them."---UN Secretary General, Kofi Annan, in a keynote address to the International Telecommunication Union, Oct. 9, 1999.
Millions update the state of the game on the way to a common conclusion, in one case to help the Operator regain control of a spaceship and bring her crew back to the future.
MapReduce: Simplified Data Processing on Large Clusters
MapReduce is a programming model and an associated implementation for processing and generating large datasets that is amenable to a broad variety of real-world tasks. Users specify the computation in terms of a map and a reduce function, and the underlying runtime system automatically parallelizes the computation across large-scale clusters of machines, handles machine failures, and schedules inter-machine communication to make efficient use of the network and disks. Programmers find the system easy to use: more than ten thousand distinct MapReduce programs have been implemented internally at Google over the past four years, and an average of one hundred thousand MapReduce jobs are executed on Google's clusters every day, processing a total of more than twenty petabytes of data per day.
Near-Optimal Hashing Algorithms for Approximate Nearest Neighbor in High Dimensions
In this article, we give an overview of efficient algorithms for the approximate and exact nearest neighbor problem. The goal is to preprocess a dataset of objects (e.g., images) so that later, given a new query object, one can quickly return the dataset object that is most similar to the query. The problem is of significant interest in a wide variety of areas.
Technical Perspective: The Data Center is the Computer
Internet services are already significant forces in searching, retail purchases, music downloads, and auctions. One vision of 21st century IT is that most users will be accessing such services over a descendant of the cell phone rather than running shrink-wrapped software on a descendant of the PC.
Technical Perspective: Finding a Good Neighbor, Near and Fast
You haven't read it yet, but you can already tell this article is going to be one long jumble of words, numbers, and punctuation marks. Indeed, but look at it differently, as a text classifier would, and you will see a single point in high dimension, with word frequencies acting as coordinates. Or take the background on your flat panel display: a million colorful pixels teaming up to make quite a striking picture. Yes, but also one single point in 106-dimensional space--that is, if you think of each pixel's RGB intensity as a separate coordinate. In fact, you don't need to look hard to find complex, heterogeneous data encoded as clouds of points in high dimension. They routinely surface in applications as diverse as medical imaging, bioinformatics, astrophysics, and finance.
The Centrality and Prestige of CACM
Journal rankings identify the most respected publications in a field, and can influence which sources to read to remain current, as well as which journals to target when publishing. Ranking studies also help track the progress of the field, identifying core journals and research topics, and tracking changes in these topics and perceptions over time. Past journal ranking studies have consistently found Communications of the ACM (CACM) to be very highly respected within the IS discipline. However, the exact nature of its relationships to other IS journals has not been thoroughly examined. In this article, we report a social network analysis (SNA) of 120 journals for the purpose of exploring in detail CACM's position within the IS journal network.
Multidisciplinary Research on the Datapath of the Computing Disciplines
Social cognitive career theory helps determine why minorities and women are still so underrepresented in the computing disciplines in colleges and universities.
Trespass, Nuisance, and Spam: 11th Century Common Law Meets the Internet
Even in the instantaneous world of cyberspace, common law still provides a protective shield over many Internet problems.
Competing with IT: The Role of Shared IT-Business Understanding
Studying why some firms derive more competitive advantage and value than others using IT resources.
If they are, only one can refer to a distinct document; if not, many can refer to the same document.
Shape the Future of Computing
ACM encourages its members to take a direct hand in shaping the future of the association. There are more ways than ever to get involved.
Get InvolvedCommunications of the ACM (CACM) is now a fully Open Access publication.
By opening CACM to the world, we hope to increase engagement among the broader computer science community and encourage non-members to discover the rich resources ACM has to offer.
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