Ramji Venkataramanan

Orcid: 0000-0001-7915-5432

Affiliations:
  • University of Cambridge, Department of Engineering, UK


According to our database1, Ramji Venkataramanan authored at least 77 papers between 2004 and 2024.

Collaborative distances:
  • Dijkstra number2 of four.
  • Erdős number3 of four.

Timeline

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Bibliography

2024
Bayes-Optimal Estimation in Generalized Linear Models via Spatial Coupling.
IEEE Trans. Inf. Theory, November, 2024

Approximate Message Passing with Rigorous Guarantees for Pooled Data and Quantitative Group Testing.
SIAM J. Math. Data Sci., 2024

Quantitative Group Testing and Pooled Data in the Linear Regime with Sublinear Tests.
CoRR, 2024

Coded Many-User Multiple Access via Approximate Message Passing.
Proceedings of the IEEE International Symposium on Information Theory, 2024

Many-user multiple access with random user activity.
Proceedings of the IEEE International Symposium on Information Theory, 2024

Inferring Change Points in High-Dimensional Linear Regression via Approximate Message Passing.
Proceedings of the Forty-first International Conference on Machine Learning, 2024

Spectral Estimators for Structured Generalized Linear Models via Approximate Message Passing (Extended Abstract).
Proceedings of the Thirty Seventh Annual Conference on Learning Theory, June 30, 2024

2023
Sketching Sparse Low-Rank Matrices With Near-Optimal Sample- and Time-Complexity Using Message Passing.
IEEE Trans. Inf. Theory, September, 2023

Mixed Regression via Approximate Message Passing.
J. Mach. Learn. Res., 2023

Approximate Message Passing with Rigorous Guarantees for Pooled Data and Quantitative Group Testing.
CoRR, 2023

Spectral Estimators for Structured Generalized Linear Models via Approximate Message Passing.
CoRR, 2023

Statistical-Computational Tradeoffs in Mixed Sparse Linear Regression.
Proceedings of the Thirty Sixth Annual Conference on Learning Theory, 2023

Mixed Linear Regression via Approximate Message Passing.
Proceedings of the International Conference on Artificial Intelligence and Statistics, 2023

2022
Near-Optimal Coding for Many-User Multiple Access Channels.
IEEE J. Sel. Areas Inf. Theory, 2022

A Unifying Tutorial on Approximate Message Passing.
Found. Trends Mach. Learn., 2022

Optimal Combination of Linear and Spectral Estimators for Generalized Linear Models.
Found. Comput. Math., 2022

Precise Asymptotics for Spectral Methods in Mixed Generalized Linear Models.
CoRR, 2022

Sketching sparse low-rank matrices with near-optimal sample- and time-complexity.
Proceedings of the IEEE International Symposium on Information Theory, 2022

Estimation in Rotationally Invariant Generalized Linear Models via Approximate Message Passing.
Proceedings of the International Conference on Machine Learning, 2022

2021
Capacity-Achieving Spatially Coupled Sparse Superposition Codes With AMP Decoding.
IEEE Trans. Inf. Theory, 2021

Modulated Sparse Superposition Codes for the Complex AWGN Channel.
IEEE Trans. Inf. Theory, 2021

Multilayer Codes for Synchronization From Deletions and Insertions.
IEEE Trans. Inf. Theory, 2021

PCA Initialization for Approximate Message Passing in Rotationally Invariant Models.
Proceedings of the Advances in Neural Information Processing Systems 34: Annual Conference on Neural Information Processing Systems 2021, 2021

Near-Optimal Coding for Massive Multiple Access.
Proceedings of the IEEE International Symposium on Information Theory, 2021

Approximate Message Passing with Spectral Initialization for Generalized Linear Models.
Proceedings of the 24th International Conference on Artificial Intelligence and Statistics, 2021

2020
Modulated Sparse Regression Codes.
Proceedings of the IEEE International Symposium on Information Theory, 2020

2019
The Error Probability of Sparse Superposition Codes With Approximate Message Passing Decoding.
IEEE Trans. Inf. Theory, 2019

Sparse Regression Codes.
Found. Trends Commun. Inf. Theory, 2019

Spatially Coupled Sparse Regression Codes with Sliding Window AMP Decoding.
Proceedings of the 2019 IEEE Information Theory Workshop, 2019

Boolean Functions with Biased Inputs: Approximation and Noise Sensitivity.
Proceedings of the IEEE International Symposium on Information Theory, 2019

Coding for Deletion Channels with Multiple Traces.
Proceedings of the IEEE International Symposium on Information Theory, 2019

2018
Cluster-Seeking James-Stein Estimators.
IEEE Trans. Inf. Theory, 2018

Finite Sample Analysis of Approximate Message Passing Algorithms.
IEEE Trans. Inf. Theory, 2018

Coding for Segmented Edit Channels.
IEEE Trans. Inf. Theory, 2018

Techniques for Improving the Finite Length Performance of Sparse Superposition Codes.
IEEE Trans. Commun., 2018

Capacity-achieving sparse regression codes via spatial coupling.
Proceedings of the IEEE Information Theory Workshop, 2018

Empirical Bayes Estimators for Sparse Sequences.
Proceedings of the 2018 IEEE International Symposium on Information Theory, 2018

Spatially Coupled Sparse Regression Codes: Design and State Evolution Analysis.
Proceedings of the 2018 IEEE International Symposium on Information Theory, 2018

Efficient Systematic Encoding of Non-binary VT Codes.
Proceedings of the 2018 IEEE International Symposium on Information Theory, 2018

2017
The Rate-Distortion Function and Excess-Distortion Exponent of Sparse Regression Codes With Optimal Encoding.
IEEE Trans. Inf. Theory, 2017

Capacity-Achieving Sparse Superposition Codes via Approximate Message Passing Decoding.
IEEE Trans. Inf. Theory, 2017

Strong converse bounds for high-dimensional estimation.
CoRR, 2017

Empirical Bayes Estimators for High-Dimensional Sparse Vectors.
CoRR, 2017

Optimizing the Finite Length Performance of Sparse Superposition Codes.
CoRR, 2017

Multilayer codes for synchronization from deletions.
Proceedings of the 2017 IEEE Information Theory Workshop, 2017

The error exponent of sparse regression codes with AMP decoding.
Proceedings of the 2017 IEEE International Symposium on Information Theory, 2017

Codes for channels with segmented edits.
Proceedings of the 2017 IEEE International Symposium on Information Theory, 2017

2016
Cluster-seeking shrinkage estimators.
Proceedings of the IEEE International Symposium on Information Theory, 2016

Finite-sample analysis of Approximate Message Passing.
Proceedings of the IEEE International Symposium on Information Theory, 2016

2015
Low-Complexity Interactive Algorithms for Synchronization From Deletions, Insertions, and Substitutions.
IEEE Trans. Inf. Theory, 2015

Capacity-achieving Sparse Regression Codes via approximate message passing decoding.
Proceedings of the IEEE International Symposium on Information Theory, 2015

2014
Lossy Compression via Sparse Linear Regression: Computationally Efficient Encoding and Decoding.
IEEE Trans. Inf. Theory, 2014

Lossy Compression via Sparse Linear Regression: Performance Under Minimum-Distance Encoding.
IEEE Trans. Inf. Theory, 2014

Rewritable Storage Channels with Hidden State.
IEEE J. Sel. Areas Commun., 2014

The Gaussian rate-distortion function of sparse regression codes with optimal encoding.
Proceedings of the 2014 IEEE International Symposium on Information Theory, Honolulu, HI, USA, June 29, 2014

2013
Achievable Rates for Channels With Deletions and Insertions.
IEEE Trans. Inf. Theory, 2013

An Achievable Rate Region for the Broadcast Channel With Feedback.
IEEE Trans. Inf. Theory, 2013

Improved capacity lower bounds for channels with deletions and insertions.
Proceedings of the 2013 IEEE Information Theory Workshop, 2013

Sparse Regression codes: Recent results and future directions.
Proceedings of the 2013 IEEE Information Theory Workshop, 2013

Efficient interactive algorithms for file synchronization under general edits.
Proceedings of the 51st Annual Allerton Conference on Communication, 2013

2012
Gaussian Rate-Distortion via Sparse Regression over Compact Dictionaries
CoRR, 2012

Coding strategies for the uniform noise rewritable channel with hidden state.
Proceedings of the 2012 IEEE International Symposium on Information Theory, 2012

Gaussian rate-distortion via sparse linear regression over compact dictionaries.
Proceedings of the 2012 IEEE International Symposium on Information Theory, 2012

Sparse regression codes for multi-terminal source and channel coding.
Proceedings of the 50th Annual Allerton Conference on Communication, 2012

2011
A New Achievable Rate Region for the Multiple-Access Channel With Noiseless Feedback.
IEEE Trans. Inf. Theory, 2011

Achievable Rates for Multiple Descriptions With Feed-Forward.
IEEE Trans. Inf. Theory, 2011

2010
On Computing the Feedback Capacity of Channels and the Feed-Forward Rate-Distortion Function of Sources.
IEEE Trans. Commun., 2010

Typicality Graphs:Large Deviation Analysis
CoRR, 2010

Achievable rates for the broadcast channel with feedback.
Proceedings of the IEEE International Symposium on Information Theory, 2010

Typicality graphs and their properties.
Proceedings of the IEEE International Symposium on Information Theory, 2010

Interactive low-complexity codes for synchronization from deletions and insertions.
Proceedings of the 48th Annual Allerton Conference on Communication, 2010

2009
A new achievable rate region for the discrete memoryless multiple-access channel with feedback.
Proceedings of the IEEE International Symposium on Information Theory, 2009

2008
Multiple descriptions with feed-forward: A single-letter achievable rate region.
Proceedings of the 2008 IEEE International Symposium on Information Theory, 2008

2007
Source Coding With Feed-Forward: Rate-Distortion Theorems and Error Exponents for a General Source.
IEEE Trans. Inf. Theory, 2007

On Evaluating the Rate-Distortion Function of Sources with Feed-Forward and the Capacity of Channels with Feedback.
Proceedings of the IEEE International Symposium on Information Theory, 2007

2006
Estimation of frequency offset using warped discrete-Fourier transform.
Signal Process., 2006

2004
Source coding with feed-forward.
Proceedings of the 2004 IEEE Information Theory Workshop, 2004


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