Search Results for author: Denali Molitor

Found 11 papers, 4 papers with code

Massively Scalable Inverse Reinforcement Learning in Google Maps

1 code implementation18 May 2023 Matt Barnes, Matthew Abueg, Oliver F. Lange, Matt Deeds, Jason Trader, Denali Molitor, Markus Wulfmeier, Shawn O'Banion

Inverse reinforcement learning (IRL) offers a powerful and general framework for learning humans' latent preferences in route recommendation, yet no approach has successfully addressed planetary-scale problems with hundreds of millions of states and demonstration trajectories.

reinforcement-learning

Neural Nonnegative Matrix Factorization for Hierarchical Multilayer Topic Modeling

no code implementations28 Feb 2023 Tyler Will, Runyu Zhang, Eli Sadovnik, Mengdi Gao, Joshua Vendrow, Jamie Haddock, Denali Molitor, Deanna Needell

We introduce a new method based on nonnegative matrix factorization, Neural NMF, for detecting latent hierarchical structure in data.

Document Classification

Inference of Media Bias and Content Quality Using Natural-Language Processing

no code implementations1 Dec 2022 Zehan Chao, Denali Molitor, Deanna Needell, Mason A. Porter

We then infer a ``media-bias chart'' of (bias, quality) coordinates for the media outlets by integrating the (bias, quality) measurements of the tweets of the media outlets.

Analysis of Legal Documents via Non-negative Matrix Factorization Methods

no code implementations28 Apr 2021 Ryan Budahazy, Lu Cheng, Yihuan Huang, Andrew Johnson, Pengyu Li, Joshua Vendrow, Zhoutong Wu, Denali Molitor, Elizaveta Rebrova, Deanna Needell

The California Innocence Project (CIP), a clinical law school program aiming to free wrongfully convicted prisoners, evaluates thousands of mails containing new requests for assistance and corresponding case files.

Sparseness-constrained Nonnegative Tensor Factorization for Detecting Topics at Different Time Scales

1 code implementation4 Oct 2020 Lara Kassab, Alona Kryshchenko, Hanbaek Lyu, Denali Molitor, Deanna Needell, Elizaveta Rebrova, Jiahong Yuan

Further, we propose quantitative ways to measure the topic length and demonstrate the ability of S-NCPD (as well as its online variant) to discover short and long-lasting temporal topics in a controlled manner in semi-synthetic and real-world data including news headlines.

Tensor Decomposition

Adaptive Sketch-and-Project Methods for Solving Linear Systems

2 code implementations9 Sep 2019 Robert Gower, Denali Molitor, Jacob Moorman, Deanna Needell

We present new adaptive sampling rules for the sketch-and-project method for solving linear systems.

Numerical Analysis Numerical Analysis 15A06, 15B52, 65F10, 68W20, 65N75, 65Y20, 68Q25, 68W40, 90C20

Bias of Homotopic Gradient Descent for the Hinge Loss

no code implementations26 Jul 2019 Denali Molitor, Deanna Needell, Rachel Ward

Gradient descent is a simple and widely used optimization method for machine learning.

BIG-bench Machine Learning

An iterative method for classification of binary data

no code implementations9 Sep 2018 Denali Molitor, Deanna Needell

Building on a recently designed simple framework for classification using binary data, we demonstrate that one can improve classification accuracy of this approach through iterative applications whose output serves as input to the next application.

Classification Data Compression +1

Hierarchical Classification using Binary Data

no code implementations23 Jul 2018 Denali Molitor, Deanna Needell

In classification problems, especially those that categorize data into a large number of classes, the classes often naturally follow a hierarchical structure.

Classification General Classification

Model Agnostic Supervised Local Explanations

2 code implementations NeurIPS 2018 Gregory Plumb, Denali Molitor, Ameet Talwalkar

Some of the most common forms of interpretability systems are example-based, local, and global explanations.

feature selection

Matrix Completion for Structured Observations

no code implementations29 Jan 2018 Denali Molitor, Deanna Needell

We propose adjusting the standard nuclear norm minimization strategy for matrix completion to account for such structural differences between observed and unobserved entries by regularizing the values of the unobserved entries.

Matrix Completion

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