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Chris Tanner

7 accepted papers

2025

BLEUBERI: BLEU is a surprisingly effective reward for instruction following

NeurIPS 2025poster

Reward models are central to aligning LLMs with human preferences, but they are costly to train, requiring large-scale human-labeled preference data and powerful pretrained LLM backbones. Meanwhile, the increasing availability of high-quality synthetic instruction-following datasets raises the quest…

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2025

Language Model Probabilities are Not Calibrated in Numeric Contexts

ACL 2025long

Some statements have one well-defined continuation (e.g., “the Eiffel Tower is in [Paris]"), whereas others have a natural distribution over multiple options (e.g., “the weighted coin flip was [Heads/Tails].") We argue that language model (LM) outputs should capture these natural distributions. Our…

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2024

BizBench: A Quantitative Reasoning Benchmark for Business and Finance

ACL 2024long

Answering questions within business and finance requires reasoning, precision, and a wide-breadth of technical knowledge. Together, these requirements make this domain difficult for large language models (LLMs). We introduce BizBench, a benchmark for evaluating models’ ability to reason about realis…

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2024

DocFinQA: A Long-Context Financial Reasoning Dataset

ACL 2024short

For large language models (LLMs) to be effective in the financial domain – where each decision can have a significant impact – it is necessary to investigate realistic tasks and data. Financial professionals often interact with documents spanning hundreds of pages, but most financial research datase…

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2024

Greed is All You Need: An Evaluation of Tokenizer Inference Methods

ACL 2024short

While subword tokenizers such as BPE and WordPiece are typically used to build vocabularies for NLP models, the method of decoding text into a sequence of tokens from these vocabularies is often left unspecified, or ill-suited to the method in which they were constructed. We provide a controlled ana…

2024

Tokenization Is More Than Compression

EMNLP 2024main

Tokenization is a foundational step in natural language processing (NLP) tasks, bridging raw text and language models. Existing tokenization approaches like Byte-Pair Encoding (BPE) originate from the field of data compression, and it has been suggested that the effectiveness of BPE stems from its a…