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Keshav Santhanam

6 accepted papers

2025

PARALLELPROMPT: Extracting Parallelism from Large Language Model Queries

NeurIPS 2025poster

LLM serving systems typically treat user prompts as monolithic inputs, optimizing inference through decoding tricks or inter-query batching. However, many real-world prompts contain *latent semantic parallelism*—decomposable structures where subtasks can be executed independently to reduce latency w…

Cited by 0SourceScholar
2024

DSPy: Compiling Declarative Language Model Calls into State-of-the-Art Pipelines

ICLR 2024spotlight

The ML community is rapidly exploring techniques for prompting language models (LMs) and for stacking them into pipelines that solve complex tasks. Unfortunately, existing LM pipelines are typically implemented using hard-coded “prompt templates”, i.e. lengthy strings discovered via trial and error.…

2023

Cheaply Estimating Inference Efficiency Metrics for Autoregressive Transformer Models

NeurIPS 2023poster

Large language models (LLMs) are highly capable but also computationally expensive. Characterizing the _fundamental tradeoff_ between inference efficiency and model capabilities is thus important, but requires an efficiency metric that is comparable across models from different providers. Unfortuna…

2023

Moving Beyond Downstream Task Accuracy for Information Retrieval Benchmarking

ACL 2023findings

Neural information retrieval (IR) systems have progressed rapidly in recent years, in large part due to the release of publicly available benchmarking tasks. Unfortunately, some dimensions of this progress are illusory: the majority of the popular IR benchmarks today focus exclusively on downstream…

2023

UDAPDR: Unsupervised Domain Adaptation via LLM Prompting and Distillation of Rerankers

EMNLP 2023long main

Many information retrieval tasks require large labeled datasets for fine-tuning. However, such datasets are often unavailable, and their utility for real-world applications can diminish quickly due to domain shifts. To address this challenge, we develop and motivate a method for using large language…

Cited by 0SourcecodeScholar
2022

ColBERTv2: Effective and Efficient Retrieval via Lightweight Late Interaction

NAACL 2022long

Neural information retrieval (IR) has greatly advanced search and other knowledge-intensive language tasks. While many neural IR methods encode queries and documents into single-vector representations, late interaction models produce multi-vector representations at the granularity of each token and…