Search Results for author: Shubhendu Trivedi

Found 21 papers, 8 papers with code

Position Paper: Generalized grammar rules and structure-based generalization beyond classical equivariance for lexical tasks and transduction

no code implementations2 Feb 2024 Mircea Petrache, Shubhendu Trivedi

Compositional generalization is one of the main properties which differentiates lexical learning in humans from state-of-art neural networks.

Position

Generating with Confidence: Uncertainty Quantification for Black-box Large Language Models

1 code implementation30 May 2023 Zhen Lin, Shubhendu Trivedi, Jimeng Sun

Large language models (LLMs) specializing in natural language generation (NLG) have recently started exhibiting promising capabilities across a variety of domains.

Management Question Answering +2

Fast Online Value-Maximizing Prediction Sets with Conformal Cost Control

1 code implementation2 Feb 2023 Zhen Lin, Shubhendu Trivedi, Cao Xiao, Jimeng Sun

We focus on a typical scenario where such requirements, separately encoding $\textit{value}$ and $\textit{cost}$, compete with each other.

Conformal Prediction Intervals with Temporal Dependence

1 code implementation25 May 2022 Zhen Lin, Shubhendu Trivedi, Jimeng Sun

We focus on the task of constructing valid prediction intervals (PIs) in time series regression with a cross-section.

Conformal Prediction Prediction Intervals +4

Conformal Prediction with Temporal Quantile Adjustments

no code implementations20 May 2022 Zhen Lin, Shubhendu Trivedi, Jimeng Sun

TQA adjusts the quantile to query in CP at each time $t$, accounting for both cross-sectional and longitudinal coverage in a theoretically-grounded manner.

Conformal Prediction Econometrics +6

Taking a Step Back with KCal: Multi-Class Kernel-Based Calibration for Deep Neural Networks

no code implementations15 Feb 2022 Zhen Lin, Shubhendu Trivedi, Jimeng Sun

Most existing calibration methods either lack theoretical guarantees for producing calibrated outputs, reduce classification accuracy in the process, or only calibrate the predicted class.

Decision Making Density Estimation +2

DeepSZ: Identification of Sunyaev-Zel'dovich Galaxy Clusters using Deep Learning

no code implementations25 Feb 2021 Zhen Lin, Nicholas Huang, Camille Avestruz, W. L. Kimmy Wu, Shubhendu Trivedi, João Caldeira, Brian Nord

We present a comparison between two methods of cluster identification: the standard Matched Filter (MF) method in SZ cluster finding and a method using Convolutional Neural Networks (CNN).

Rotation-Invariant Autoencoders for Signals on Spheres

no code implementations8 Dec 2020 Suhas Lohit, Shubhendu Trivedi

These newly proposed convolutional layers naturally extend the notion of convolution to functions on the unit sphere $S^2$ and the group of rotations $SO(3)$ and these layers are equivariant to 3D rotations.

Clustering Retrieval

The Expected Jacobian Outerproduct: Theory and Empirics

no code implementations5 Jun 2020 Shubhendu Trivedi, J. Wang

The expected gradient outerproduct (EGOP) of an unknown regression function is an operator that arises in the theory of multi-index regression, and is known to recover those directions that are most relevant to predicting the output.

Metric Learning regression

Asymmetric Multiresolution Matrix Factorization

no code implementations10 Oct 2019 Pramod Kaushik Mudrakarta, Shubhendu Trivedi, Risi Kondor

Multiresolution Matrix Factorization (MMF) was recently introduced as an alternative to the dominant low-rank paradigm in order to capture structure in matrices at multiple different scales.

Deep Learning for Automated Classification and Characterization of Amorphous Materials

no code implementations10 Sep 2019 Kirk Swanson, Shubhendu Trivedi, Joshua Lequieu, Kyle Swanson, Risi Kondor

The characterization of amorphous materials is especially challenging because their lack of long-range order makes it difficult to define structural metrics.

Classification General Classification

Clebsch–Gordan Nets: a Fully Fourier Space Spherical Convolutional Neural Network

no code implementations NeurIPS 2018 Risi Kondor, Zhen Lin, Shubhendu Trivedi

Recent work by Cohen et al. has achieved state-of-the-art results for learning spherical images in a rotation invariant way by using ideas from group representation theory and noncommutative harmonic analysis.

DeepCMB: Lensing Reconstruction of the Cosmic Microwave Background with Deep Neural Networks

1 code implementation2 Oct 2018 João Caldeira, W. L. Kimmy Wu, Brian Nord, Camille Avestruz, Shubhendu Trivedi, Kyle T. Story

In this work, we demonstrate reconstruction of the CMB lensing potential with deep convolutional neural networks (CNN) - ie, a ResUNet.

Discriminative Learning of Similarity and Group Equivariant Representations

no code implementations30 Aug 2018 Shubhendu Trivedi

We also present extensions of this formulation to metric learning for kNN regression, asymmetric similarity learning and discriminative learning of Hamming distance.

Metric Learning

Clebsch-Gordan Nets: a Fully Fourier Space Spherical Convolutional Neural Network

1 code implementation24 Jun 2018 Risi Kondor, Zhen Lin, Shubhendu Trivedi

Recent work by Cohen \emph{et al.} has achieved state-of-the-art results for learning spherical images in a rotation invariant way by using ideas from group representation theory and noncommutative harmonic analysis.

On the Generalization of Equivariance and Convolution in Neural Networks to the Action of Compact Groups

no code implementations ICML 2018 Risi Kondor, Shubhendu Trivedi

In this paper we give a rigorous, theoretical treatment of convolution and equivariance in neural networks with respect to not just translations, but the action of any compact group.

Covariant Compositional Networks For Learning Graphs

2 code implementations ICLR 2018 Risi Kondor, Hy Truong Son, Horace Pan, Brandon Anderson, Shubhendu Trivedi

Most existing neural networks for learning graphs address permutation invariance by conceiving of the network as a message passing scheme, where each node sums the feature vectors coming from its neighbors.

Graph Learning

The Utility of Clustering in Prediction Tasks

no code implementations21 Sep 2015 Shubhendu Trivedi, Zachary A. Pardos, Neil T. Heffernan

Previous work has hinted at the improvement in prediction accuracy attributed to clustering algorithms if used to pre-process the data.

Clustering Data Compression

Discriminative Metric Learning by Neighborhood Gerrymandering

no code implementations NeurIPS 2014 Shubhendu Trivedi, David Mcallester, Greg Shakhnarovich

We formulate the problem of metric learning for k nearest neighbor classification as a large margin structured prediction problem, with a latent variable representing the choice of neighbors and the task loss directly corresponding to classification error.

Classification General Classification +2

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