Search Results for author: Indika Rajapakse

Found 11 papers, 3 papers with code

Hypergraph Analysis Toolbox for Chromosome Conformation

no code implementations21 Nov 2022 Joshua Pickard, Can Chen, Rahmy Salman, Cooper Stansbury, Sion Kim, Amit Surana, Anthony Bloch, Indika Rajapakse

Recent advances in biological technologies, such as multi-way chromosome conformation capture (3C), require development of methods for analysis of multi-way interactions.

ASK: Adversarial Soft k-Nearest Neighbor Attack and Defense

1 code implementation27 Jun 2021 Ren Wang, Tianqi Chen, Philip Yao, Sijia Liu, Indika Rajapakse, Alfred Hero

K-Nearest Neighbor (kNN)-based deep learning methods have been applied to many applications due to their simplicity and geometric interpretability.

RAILS: A Robust Adversarial Immune-inspired Learning System

1 code implementation27 Jun 2021 Ren Wang, Tianqi Chen, Stephen Lindsly, Cooper Stansbury, Alnawaz Rehemtulla, Indika Rajapakse, Alfred Hero

Initializing a population of exemplars that is balanced across classes, RAILS starts from a uniform label distribution that encourages diversity and uses an evolutionary optimization process to adaptively adjust the predictive label distribution in a manner that emulates the way the natural immune system recognizes novel pathogens.

Adversarial Defense Adversarial Robustness +2

Immuno-mimetic Deep Neural Networks (Immuno-Net)

no code implementations27 Jun 2021 Ren Wang, Tianqi Chen, Stephen Lindsly, Cooper Stansbury, Indika Rajapakse, Alfred Hero

This immuno-mimetic model leads to a new computational biology framework for robustification of deep neural networks against adversarial attacks.

Image Classification

Hypergraph Dissimilarity Measures

no code implementations15 Jun 2021 Amit Surana, Can Chen, Indika Rajapakse

In this paper, we propose two novel approaches for hypergraph comparison.

RAILS: A Robust Adversarial Immune-inspired Learning System

no code implementations18 Dec 2020 Ren Wang, Tianqi Chen, Stephen Lindsly, Alnawaz Rehemtulla, Alfred Hero, Indika Rajapakse

RAILS incorporates an Adaptive Immune System Emulation (AISE), which emulates in silico the biological mechanisms that are used to defend the host against attacks by pathogens.

Adversarial Defense Image Classification

Understanding Memory B Cell Selection

no code implementations9 Dec 2020 Stephen Lindsly, Maya Gupta, Cooper Stansbury, Indika Rajapakse

However, memory B cells appear to be purposely selected earlier in the affinity maturation process and have lower affinity.

Controllability of Hypergraphs

no code implementations25 May 2020 Can Chen, Amit Surana, Anthony Bloch, Indika Rajapakse

In this paper, we develop a notion of controllability for hypergraphs via tensor algebra and polynomial control theory.

Tensor Entropy for Uniform Hypergraphs

no code implementations20 Dec 2019 Can Chen, Indika Rajapakse

In this paper, we develop the notion of entropy for uniform hypergraphs via tensor theory.

Latent heterogeneous multilayer community detection

no code implementations16 Jun 2018 Hafiz Tiomoko Ali, Sijia Liu, Yasin Yilmaz, Romain Couillet, Indika Rajapakse, Alfred Hero

We propose a method for simultaneously detecting shared and unshared communities in heterogeneous multilayer weighted and undirected networks.

Community Detection

Fast Incremental von Neumann Graph Entropy Computation: Theory, Algorithm, and Applications

1 code implementation30 May 2018 Pin-Yu Chen, Lingfei Wu, Sijia Liu, Indika Rajapakse

The von Neumann graph entropy (VNGE) facilitates measurement of information divergence and distance between graphs in a graph sequence.

Anomaly Detection Computational Efficiency +1

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