Search Results for author: Vipul Periwal

Found 6 papers, 3 papers with code

Tight basis cycle representatives for persistent homology of large data sets

no code implementations6 Jun 2022 Manu Aggarwal, Vipul Periwal

Here, we provide a strategy and algorithms to compute tight representative boundaries around nontrivial robust features in large data sets.

Topological Data Analysis

Dory: Overcoming Barriers to Computing Persistent Homology

1 code implementation9 Mar 2021 Manu Aggarwal, Vipul Periwal

We present Dory, an efficient and scalable algorithm that can compute the persistent homology of large data sets.

Topological Data Analysis

Inference of stochastic time series with missing data

no code implementations28 Jan 2021 Sangwon Lee, Vipul Periwal, Junghyo Jo

At the initial iteration of the EM algorithm, the model inference shows better model-data consistency with observed data points than with missing data points.

Time Series Time Series Analysis

Inverse Ising inference from high-temperature re-weighting of observations

no code implementations10 Sep 2019 Junghyo Jo, Danh-Tai Hoang, Vipul Periwal

Maximum Likelihood Estimation (MLE) is the bread and butter of system inference for stochastic systems.

Vocal Bursts Intensity Prediction

Data-driven inference of hidden nodes in networks

2 code implementations14 Jan 2019 Danh-Tai Hoang, Junghyo Jo, Vipul Periwal

Finally, an important hidden variable problem is to find the number of clusters in a dataset.

Data Analysis, Statistics and Probability Physics and Society

Causality inference in stochastic systems from neurons to currencies: Profiting from small sample size

2 code implementations18 May 2017 Danh-Tai Hoang, Juyong Song, Vipul Periwal, Junghyo Jo

We introduce a data-driven statistical physics approach to model inference based on minimizing a free energy of data and show superior model recovery for small sample sizes.

Data Analysis, Statistics and Probability Quantitative Methods

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