activity
20192026
most citedBeyond the Imitation Game: Quantifying and extrapolating the capabilities of language models

565 citations · 773 across the 14 of their papers we have counts for

collaborators

14 papers

cs.LG2026

Large Language Models Should Learn Personalized Rather Than Aggregated Human Preferences

Cristina Garbacea

Current approaches to aligning large language models (LLMs) aggregate diverse human preferences into a single reward signal, effectively optimizing for a hypothetical ``average use…

cs.AI2026

Personalized Benchmarking: Evaluating LLMs by Individual Preferences

Cristina Garbacea, Heran Wang, Chenhao Tan

With the rise in capabilities of large language models (LLMs) and their deployment in real-world tasks, evaluating LLM alignment with human preferences has become an important chal…

cs.CL2025

HyPerAlign: Interpretable Personalized LLM Alignment via Hypothesis Generation

Cristina Garbacea, Chenhao Tan

Alignment algorithms are widely used to align large language models (LLMs) to human users based on preference annotations. Typically these (often divergent) preferences are aggrega…

cs.AI2025★ 1 cited

Evaluating the Goal-Directedness of Large Language Models

Tom Everitt, Cristina Garbacea, Alexis Bellot +4

To what extent do LLMs use their capabilities towards their given goal? We take this as a measure of their goal-directedness. We evaluate goal-directedness on tasks that require in…

cs.CL2024

RATE: Causal Explainability of Reward Models with Imperfect Counterfactuals

David Reber, Sean Richardson, Todd Nief +2

Reward models are widely used as proxies for human preferences when aligning or evaluating LLMs. However, reward models are black boxes, and it is often unclear what, exactly, they…

cs.CL2024

BoNBoN Alignment for Large Language Models and the Sweetness of Best-of-n Sampling

Lin Gui, Cristina Gârbacea, Victor Veitch

This paper concerns the problem of aligning samples from large language models to human preferences using best-of- sampling, where we draw samples, rank them, and return the…

cs.CL2022★ 3 cited

GEMv2: Multilingual NLG Benchmarking in a Single Line of Code

Sebastian Gehrmann, Abhik Bhattacharjee, Abinaya Mahendiran +74

Evaluation in machine learning is usually informed by past choices, for example which datasets or metrics to use. This standardization enables the comparison on equal footing using…

cs.CL2022★ 4 cited

Why is constrained neural language generation particularly challenging?

Cristina Garbacea, Qiaozhu Mei

Recent advances in deep neural language models combined with the capacity of large scale datasets have accelerated the development of natural language generation systems that produ…

cs.CL2022★ 565 cited

Beyond the Imitation Game: Quantifying and extrapolating the capabilities of language models

Aarohi Srivastava, Abhinav Rastogi, Abhishek Rao +448

Language models demonstrate both quantitative improvement and new qualitative capabilities with increasing scale. Despite their potentially transformative impact, these new capabil…

cs.CL2021★ 52 cited

The GEM Benchmark: Natural Language Generation, its Evaluation and Metrics

Sebastian Gehrmann, Tosin Adewumi, Karmanya Aggarwal +53

We introduce GEM, a living benchmark for natural language Generation (NLG), its Evaluation, and Metrics. Measuring progress in NLG relies on a constantly evolving ecosystem of auto…

cs.CL2020★ 23 cited

Neural Language Generation: Formulation, Methods, and Evaluation

Cristina Garbacea, Qiaozhu Mei

Recent advances in neural network-based generative modeling have reignited the hopes in having computer systems capable of seamlessly conversing with humans and able to understand…

cs.CL2020

Explainable Prediction of Text Complexity: The Missing Preliminaries for Text Simplification

Cristina Garbacea, Mengtian Guo, Samuel Carton +1

Text simplification reduces the language complexity of professional content for accessibility purposes. End-to-end neural network models have been widely adopted to directly genera…

cs.LG2019★ 120 cited

Low Bit-Rate Speech Coding with VQ-VAE and a WaveNet Decoder

Cristina Gârbacea, Aäron van den Oord, Yazhe Li +4

In order to efficiently transmit and store speech signals, speech codecs create a minimally redundant representation of the input signal which is then decoded at the receiver with…

cs.CL2019★ 5 cited

Judge the Judges: A Large-Scale Evaluation Study of Neural Language Models for Online Review Generation

Cristina Garbacea, Samuel Carton, Shiyan Yan +1

We conduct a large-scale, systematic study to evaluate the existing evaluation methods for natural language generation in the context of generating online product reviews. We compa…