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A Survey on Data Selection for Language Models

28 Pith papers cite this work, alongside 6 external citations. Polarity classification is still indexing.

28 Pith papers citing it
6 external citations · Pith
abstract

A major factor in the recent success of large language models is the use of enormous and ever-growing text datasets for unsupervised pre-training. However, naively training a model on all available data may not be optimal (or feasible), as the quality of available text data can vary. Filtering out data can also decrease the carbon footprint and financial costs of training models by reducing the amount of training required. Data selection methods aim to determine which candidate data points to include in the training dataset and how to appropriately sample from the selected data points. The promise of improved data selection methods has caused the volume of research in the area to rapidly expand. However, because deep learning is mostly driven by empirical evidence and experimentation on large-scale data is expensive, few organizations have the resources for extensive data selection research. Consequently, knowledge of effective data selection practices has become concentrated within a few organizations, many of which do not openly share their findings and methodologies. To narrow this gap in knowledge, we present a comprehensive review of existing literature on data selection methods and related research areas, providing a taxonomy of existing approaches. By describing the current landscape of research, this work aims to accelerate progress in data selection by establishing an entry point for new and established researchers. Additionally, throughout this review we draw attention to noticeable holes in the literature and conclude the paper by proposing promising avenues for future research.

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representative citing papers

Online Data Selection Is Implicit Alignment

cs.LG · 2026-07-08 · conditional · novelty 6.0

Online SFT data selection acts as an implicit preference model, shifting refusal rates, verbosity, and sycophancy in directions predictable from the selected data's attribute mixture.

The Long-Term Effects of Data Selection in LLM Fine-Tuning

cs.LG · 2026-05-28 · unverdicted · novelty 6.0

Short-term data selectors in multi-stage LLM fine-tuning can slow future learning and increase forgetting, formalized as myopic selection with a proposed LHAS objective to address it.

Unified Data Selection for LLM Reasoning

cs.CL · 2026-05-21 · unverdicted · novelty 6.0

High-Entropy Sum (HES) selects high-quality reasoning data for LLMs by summing entropy of the top highest-entropy tokens, matching full-dataset performance with top 20% in SFT and outperforming baselines in RFT and RL.

SEED: Targeted Data Selection by Weighted Independent Set

cs.LG · 2026-05-15 · unverdicted · novelty 6.0

SEED models data selection as Weighted Independent Set on a similarity graph, using node value calibration and local scale normalization to produce compact high-quality training subsets that outperform prior methods on instruction tuning and segmentation tasks.

CRAFT: Clustered Regression for Adaptive Filtering of Training data

cs.CL · 2026-04-24 · unverdicted · novelty 6.0

CRAFT filters training data via source clustering and conditional target selection to bound KL divergence to validation distributions, yielding 43.34 BLEU on English-Hindi translation from 33M pairs while running over 40x faster than TSDS.

RewardBench 2: Advancing Reward Model Evaluation

cs.CL · 2025-06-02 · unverdicted · novelty 6.0

RewardBench 2 is a new benchmark that supplies challenging fresh human prompts for reward model evaluation, yielding lower average scores but higher correlation with downstream best-of-N sampling and RLHF training performance.

StarCoder 2 and The Stack v2: The Next Generation

cs.SE · 2024-02-29 · accept · novelty 6.0

StarCoder2-15B matches or beats CodeLlama-34B on code tasks despite being smaller, and StarCoder2-3B outperforms prior 15B models, with open weights and exact training data identifiers released.

Capability Self-Assessment: Teaching LLMs to Know Their Limits

cs.AI · 2026-05-29 · unverdicted · novelty 5.0

Reinforcement learning teaches LLMs to assess their own capabilities more effectively than supervised fine-tuning, preserves original skills, generalizes out of distribution, and aids local-cloud routing and data selection.

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Showing 28 of 28 citing papers.