Frame Permutation Quantization (2009)
Nguyen, Ha Q., Goyal, Vivek K, Varshney, Lav R.
Frame permutation quantization (FPQ) is a new vector quantization technique using finite frames. In FPQ, a vector is encoded using a permutation source code to quantize its frame expansion. This...
Concentric Permutation Source Codes (2009)
Nguyen, Ha Q., Varshney, Lav R., Goyal, Vivek K
Permutation codes are a class of structured vector quantizers with a computationally-simple encoding procedure. Here we analyze and optimize an extension that preserves the computational simplicity...
Structural Properties of the Caenorhabditis elegans Neuronal Network (2009)
Varshney, Lav R., Chen, Beth L., Paniagua, Eric, Hall, David H., Chklovskii, Dmitri B.
Despite recent interest in reconstructing neuronal networks, complete wiring diagrams on the level of individual synapses remain scarce and the insights into function they can provide remain unclear....
Distributed Functional Scalar Quantization: High-Resolution Analysis and Extensions (2008)
Misra, Vinith, Goyal, Vivek K, Varshney, Lav R.
Communication of quantized information is frequently followed by a computation. We consider situations of distributed functional quantization: distributed quantization of (possibly correlated)...
Malleable Coding with Fixed Segment Reuse (2008)
Kusuma, Julius, Varshney, Lav R., Goyal, Vivek K
Storage area networks, remote backup storage systems, and similar information systems frequently modify stored data with updates from new versions. In these systems, it is desirable for the data to...
Malleable Coding: Compressed Palimpsests (2008)
Varshney, Lav R., Kusuma, Julius, Goyal, Vivek K
A malleable coding scheme considers not only compression efficiency but also the ease of alteration, thus encouraging some form of recycling of an old compressed version in the formation of a new...
Performance of LDPC Codes Under Faulty Iterative Decoding (2008)
In communication theory, it is traditionally assumed that decoding algorithms perform without fault. Noise, however, provides a fundamental limit to computation systems just as it does to...
Quantization of Prior Probabilities for Hypothesis Testing (2008)
Varshney, Kush R., Varshney, Lav R.
Bayesian hypothesis testing is investigated when the prior probabilities of the hypotheses, taken as a random vector, are quantized. Nearest neighbor and centroid conditions are derived using mean...
Information Storage Capacity (2008)
The storage of information in biological memory relies on changes in neuronal circuits, termed plasticity. Synaptic contributions to plasticity, which are an important component, may be divided into...
Benefiting from Disorder: Source Coding for Unordered Data (2007)
Varshney, Lav R., Goyal, Vivek K.
The order of letters is not always relevant in a communication task. This paper discusses the implications of order irrelevance on source coding, presenting results in several major branches of...
Optimal information storage : nonsequential sources and neural channels (2006)
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.
Optimal information storage : nonsequential sources and neural channels / (2006)
Information storage and retrieval systems are communication systems from the present to the future and fall naturally into the framework of information theory. The goal of information storage is to...
Optimal information storage : nonsequential sources and neural channels (2006)
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.
Nonsequential Sources and Neural Channels (2006)
Lav R. Varshney, Sanjoy K. Mitter, Lav R. Varshney
Information storage and retrieval systems are communication systems from the present to the future and fall naturally into the framework of information theory. The goal of information storage is to...
Hyperspectral Image Dimensionality Reduction with Metamer Discrimination Preservation (2006)
Hyperspectral imaging, even when restricted to the visible spectrum range, allows what is indiscriminable to the human visual system to become discriminable. The typical human
On the Informational Requirements of Indian Cooking (2005)
This short note is inspired by Prof. S. K. Mitter’s comments on the informational requirements of Indian cooking, made in response to Prof. D. Shah’s “Salt Lemma ” on September 20. It casts...