activity
20172026
most citedScalable Hierarchical Clustering with Tree Grafting

17 citations · 33 across the 7 of their papers we have counts for

collaborators

9 papers

cs.LG2026

Hill Sampling for Test-Time Scaling: A Simple and Better Alternative to Repeated Sampling, Evolution, and Training

Jacob Beck, Philip V. Ogren, Ari Kobren

Large language models (LLMs) can improve solutions to verifiable scientific and algorithmic problems by spending additional computation at test time. Recent systems achieve strong…

cs.CL2024

Understanding the Interplay of Scale, Data, and Bias in Language Models: A Case Study with BERT

Muhammad Ali, Swetasudha Panda, Qinlan Shen +2

In the current landscape of language model research, larger models, larger datasets and more compute seems to be the only way to advance towards intelligence. While there have been…

cs.LG2020

Leveraging Extracted Model Adversaries for Improved Black Box Attacks

Naveen Jafer Nizar, Ari Kobren

We present a method for adversarial input generation against black box models for reading comprehension based question answering. Our approach is composed of two steps. First, we a…

cs.LG2019★ 17 cited

Scalable Hierarchical Clustering with Tree Grafting

Nicholas Monath, Ari Kobren, Akshay Krishnamurthy +2

We introduce Grinch, a new algorithm for large-scale, non-greedy hierarchical clustering with general linkage functions that compute arbitrary similarity between two point sets. Th…

cs.LG2019★ 1 cited

Optimal Transport-based Alignment of Learned Character Representations for String Similarity

Derek Tam, Nicholas Monath, Ari Kobren +3

String similarity models are vital for record linkage, entity resolution, and search. In this work, we present STANCE --a learned model for computing the similarity of two strings.…

cs.LG2019★ 8 cited

Supervised Hierarchical Clustering with Exponential Linkage

Nishant Yadav, Ari Kobren, Nicholas Monath +1

In supervised clustering, standard techniques for learning a pairwise dissimilarity function often suffer from a discrepancy between the training and clustering objectives, leading…

cs.DS2019

Paper Matching with Local Fairness Constraints

Ari Kobren, Barna Saha, Andrew McCallum

Automatically matching reviewers to papers is a crucial step of the peer review process for venues receiving thousands of submissions. Unfortunately, common paper matching algorith…

cs.AI2019

Constructing High Precision Knowledge Bases with Subjective and Factual Attributes

Ari Kobren, Pablo Barrio, Oksana Yakhnenko +2

Knowledge bases (KBs) are the backbone of many ubiquitous applications and are thus required to exhibit high precision. However, for KBs that store subjective attributes of entitie…

cs.LG2017★ 7 cited

An Online Hierarchical Algorithm for Extreme Clustering

Ari Kobren, Nicholas Monath, Akshay Krishnamurthy +1

Many modern clustering methods scale well to a large number of data items, N, but not to a large number of clusters, K. This paper introduces PERCH, a new non-greedy algorithm for…