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Now showing items 181-190 of 290
MAC Design for Analog Network Coding
(2010-08-02)
Most medium access control mechanisms discard collided packets and consider interference harmful. Recent work on Analog Network Coding (ANC) suggests a different approach, in which multiple interfering transmissions are ...
Comparison of User Traffic Characteristics on Mobile-Access versus Fixed-Access Networks
(2011-05-03)
We compare Web traffic characteristics of mobile- versus fixed-access end-hosts, where herein the term "mobile" refers to access via cell towers, using for example the 3G/UMTS standard, and the term "fixed" includes Wi-Fi ...
Library Cache Coherence
(2011-05-02)
Directory-based cache coherence is a popular mechanism for chip multiprocessors and multicores. The directory protocol, however, requires multicast for invalidation messages and the collection of acknowledgement messages, ...
Gasping for AIR Why we need Linked Rules and Justifications on the Semantic Web
(2011-04-16)
The Semantic Web is a distributed model for publishing, utilizing and extending structured information using Web protocols. One of the main goals of this technology is to automate the retrieval and integration of data and ...
Approximations in the HMAX Model
(2011-04-14)
The HMAX model is a biologically motivated architecture for computer vision whose components are in close agreement with existing physiological evidence. The model is capable of achieving close to human level performance ...
Collusive Dominant-Strategy Truthfulness
(2011-04-22)
Fifty years ago, Vickrey published his famous mechanism for auctioning a single good in limited supply. The main property of Vickrey's mechanism is efficiency in dominant strategies. In absence of collusion, this is a ...
ARBAC Policy for a Large Multi-National Bank
(2011-04-27)
Administrative role-based access control (ARBAC) is the first comprehensive administrative model proposed for role-based access control (RBAC). ARBAC has several features for designing highly expressive policies, but current ...
Partial Reversal Acyclicity
(2011-04-14)
Partial Reversal (PR) is a link reversal algorithm which ensures that the underlying graph structure is destination-oriented and acyclic. These properties of PR make it useful in routing protocols and algorithms for solving ...
Mechanism Design with Approximate Valuations
(2011-02-16)
In mechanism design, we replace the strong assumption that each player knows his own payoff type EXACTLY with the more realistic assumption that he knows it only APPROXIMATELY. Specifically, we study the classical problem ...
Efficient Marginal Likelihood Optimization in Blind Deconvolution
(2011-04-04)
In blind deconvolution one aims to estimate from an input blurred image y a sharp image x and an unknown blur kernel k. Recent research shows that a key to success is to consider the overall shape of the posterior distribution ...