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We introduce $k$NN-LMs, which extend a pre-trained neural language model (LM) by linearly interpolating it with a $k$-nearest neighbors ($k$NN) model. The nearest neighbors are computed according to distance in the pre-trained LM embedding…

计算与语言 · 计算机科学 2020-02-18 Urvashi Khandelwal , Omer Levy , Dan Jurafsky , Luke Zettlemoyer , Mike Lewis

$K$-nearest neighbor language models ($k$NN-LMs), which integrate retrieval with next-word prediction, have demonstrated strong performance in language modeling as well as downstream NLP benchmarks. These results have led researchers to…

计算与语言 · 计算机科学 2024-08-22 Shangyi Geng , Wenting Zhao , Alexander M Rush

Recurrent neural networks (RNNs) serve as a fundamental building block for many sequence tasks across natural language processing. Recent research has focused on recurrent dropout techniques or custom RNN cells in order to improve…

计算与语言 · 计算机科学 2017-08-04 Stephen Merity , Bryan McCann , Richard Socher

Augmenting a language model (LM) with $k$-nearest neighbors ($k$NN) retrieval on its training data alone can decrease its perplexity, though the underlying reasons for this remain elusive. In this work, we rule out one previously posited…

计算与语言 · 计算机科学 2024-04-03 Ting-Rui Chiang , Xinyan Velocity Yu , Joshua Robinson , Ollie Liu , Isabelle Lee , Dani Yogatama

Non-parametric neural language models (NLMs) learn predictive distributions of text utilizing an external datastore, which allows them to learn through explicitly memorizing the training datapoints. While effective, these models often…

计算与语言 · 计算机科学 2021-11-16 Junxian He , Graham Neubig , Taylor Berg-Kirkpatrick

Language models (LMs) compute the probability of a text by sequentially computing a representation of an already-seen context and using this representation to predict the next word. Currently, most LMs calculate these representations…

计算与语言 · 计算机科学 2023-01-18 Frank F. Xu , Uri Alon , Graham Neubig

Large pre-trained models, such as Bert, GPT, and Wav2Vec, have demonstrated great potential for learning representations that are transferable to a wide variety of downstream tasks . It is difficult to obtain a large quantity of supervised…

计算与语言 · 计算机科学 2022-12-23 Neeraj Kumar , Ankur Narang , Brejesh Lall

Retrieval-augmented language models (LMs) use non-parametric memory to substantially outperform their non-retrieval counterparts on perplexity-based evaluations, but it is an open question whether they achieve similar gains in few- and…

计算与语言 · 计算机科学 2022-11-03 Weijia Shi , Julian Michael , Suchin Gururangan , Luke Zettlemoyer

Pre-trained Language Models (PLMs), as parametric-based eager learners, have become the de-facto choice for current paradigms of Natural Language Processing (NLP). In contrast, k-Nearest-Neighbor (kNN) classifiers, as the lazy learning…

计算与语言 · 计算机科学 2023-06-21 Lei Li , Jing Chen , Bozhong Tian , Ningyu Zhang

Language models typically need to be trained or finetuned in order to acquire new knowledge, which involves updating their weights. We instead envision language models that can simply read and memorize new data at inference time, thus…

机器学习 · 计算机科学 2022-03-18 Yuhuai Wu , Markus N. Rabe , DeLesley Hutchins , Christian Szegedy

Neural language modeling (LM) has led to significant improvements in several applications, including Automatic Speech Recognition. However, they typically require large amounts of training data, which is not available for many domains and…

计算与语言 · 计算机科学 2019-06-05 Navid Rekabsaz , Nikolaos Pappas , James Henderson , Banriskhem K. Khonglah , Srikanth Madikeri

We consider language modelling (LM) as a multi-label structured prediction task by re-framing training from solely predicting a single ground-truth word to ranking a set of words which could continue a given context. To avoid annotating…

计算与语言 · 计算机科学 2021-12-14 Arvid Frydenlund , Gagandeep Singh , Frank Rudzicz

The scarcity of large parallel corpora is an important obstacle for neural machine translation. A common solution is to exploit the knowledge of language models (LM) trained on abundant monolingual data. In this work, we propose a novel…

计算与语言 · 计算机科学 2020-10-27 Christos Baziotis , Barry Haddow , Alexandra Birch

Transfer learning has fundamentally changed the landscape of natural language processing (NLP) research. Many existing state-of-the-art models are first pre-trained on a large text corpus and then fine-tuned on downstream tasks. However,…

计算与语言 · 计算机科学 2021-09-10 Haoming Jiang , Pengcheng He , Weizhu Chen , Xiaodong Liu , Jianfeng Gao , Tuo Zhao

Recently, decomposing complex problems into simple subtasks--a crucial part of human-like natural planning--to solve the given problem has significantly boosted the performance of large language models (LLMs). However, leveraging such…

计算与语言 · 计算机科学 2025-07-11 Mihir Parmar , Palash Goyal , Xin Liu , Yiwen Song , Mingyang Ling , Chitta Baral , Hamid Palangi , Tomas Pfister

The $k$-nearest-neighbor language model ($k$NN-LM), one of the retrieval-augmented language models, improves the perplexity for given text by directly accessing a large datastore built from any text data during inference. A widely held…

计算与语言 · 计算机科学 2025-03-31 Yuto Nishida , Makoto Morishita , Hiroyuki Deguchi , Hidetaka Kamigaito , Taro Watanabe

Recently, the development of pre-trained language models has brought natural language processing (NLP) tasks to the new state-of-the-art. In this paper we explore the efficiency of various pre-trained language models. We pre-train a list of…

计算与语言 · 计算机科学 2023-07-27 Tong Guo

Large language models (LLMs) achieve good performance on challenging reasoning benchmarks, yet could also make basic reasoning mistakes. This contrasting behavior is puzzling when it comes to understanding the mechanisms behind LLMs'…

计算与语言 · 计算机科学 2025-03-05 Chulin Xie , Yangsibo Huang , Chiyuan Zhang , Da Yu , Xinyun Chen , Bill Yuchen Lin , Bo Li , Badih Ghazi , Ravi Kumar

Recent research has revealed that neural language models at scale suffer from poor temporal generalization capability, i.e., the language model pre-trained on static data from past years performs worse over time on emerging data. Existing…

计算与语言 · 计算机科学 2022-11-01 Zhaochen Su , Zecheng Tang , Xinyan Guan , Juntao Li , Lijun Wu , Min Zhang

We perform text normalization, i.e. the transformation of words from the written to the spoken form, using a memory augmented neural network. With the addition of dynamic memory access and storage mechanism, we present a neural architecture…

计算与语言 · 计算机科学 2019-04-05 Subhojeet Pramanik , Aman Hussain
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