Description: Abstract: This paper describes an algorithm for open text shallow semantic parsing. The algorithm relies on a frame dataset (FrameNet) and a semantic network (WordNet), to identify semantic relations between words in open text, as well as shallow semantic features associated with concepts in the text. Parsing semantic structures allows semantic units and constituents to be accessed and processed in a more meaningful way than syntactic parsing, moving the automation of understanding natural language text to a higher level.

Description: This presentation discusses wireless networks, access point selections, traffic balancing, multi-cell CDMA, user distribution modeling, and call admission control.

Description: This paper introduces a new codification scheme for efficient computation of measures in semantic networks. The scheme is particularly useful for fast computation of semantic associations between words and implementation of an informational retrieval operator for efficient search in semantic spaces. Other applications may also be possible.

Description: This paper discusses global versus local call admission control. Abstract: We design and implement global and local CAC algorithms for CDMA networks, and compare their network throughput for various mobility scenarios. The global CAC algorithms is inherently optimized and uses global information in making every call admission decision; it yields the best possible performance but has an intensive computational complexity. The design of the local CAC algorithm uses global information but its implementation in each cell uses only local information; it only requires the number of calls currently active in that cell and thus is very simple to implement. We show that our optimized local CAC algorithm achieves almost the same performance as our global CAC algorithm for a given call arrival rate profile.

Description: This technical report addresses how to hide secrets from an operating system. Abstract: The adversary model for digital rights management is much more powerful than for the traditional security scenarios. The adversary has complete control of the computing node - supervisory privileges, physical as well as architectural object observational capabilities. In essence, this makes the operating system (or any other layer around the architecture) itself the adversary. The repercussions of this observation are severe. It creates a need to "keep secrets" from the operating system. We argue for the need to keep secrets from the OS in hardware. This concept is demonstrated through architectural support for the obfuscation of dynamic address traces on the memory bus. The objective is to leak as little information about the executed program sequence as possible. This is done by handing over many of the virtual memory management responsibilities from the operating system to an architecturally isolated hardware black-box (VM black-box). The authors provide a detailed design for the VM blackbox and some microarchitecture level simulation derived performance data. We also describe a compiler directed prefetch scheme that uses both instruction and data prefetches to obfuscate the address traces on the address bus between on-chip ...