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In inference, open-set classification is to either classify a sample into a known class from training or reject it as an unknown class. Existing deep open-set classifiers train explicit closed-set classifiers, in some cases disjointly…

Machine Learning · Computer Science 2020-06-04 Alexander Cao , Yuan Luo , Diego Klabjan

Large-scale pre-trained language model such as BERT has achieved great success in language understanding tasks. However, it remains an open question how to utilize BERT for language generation. In this paper, we present a novel approach,…

Computation and Language · Computer Science 2020-07-21 Yen-Chun Chen , Zhe Gan , Yu Cheng , Jingzhou Liu , Jingjing Liu

Identifying words that impact a task's performance more than others is a challenge in natural language processing. Transformers models have recently addressed this issue by incorporating an attention mechanism that assigns greater attention…

Computation and Language · Computer Science 2023-03-15 Neşet Özkan Tan , Alex Yuxuan Peng , Joshua Bensemann , Qiming Bao , Tim Hartill , Mark Gahegan , Michael Witbrock

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…

Computation and Language · Computer Science 2021-12-14 Arvid Frydenlund , Gagandeep Singh , Frank Rudzicz

Recent research has demonstrated that transformers, particularly linear attention models, implicitly execute gradient-descent-like algorithms on data provided in-context during their forward inference step. However, their capability in…

Machine Learning · Computer Science 2024-10-31 Max Vladymyrov , Johannes von Oswald , Mark Sandler , Rong Ge

The increasing size of generative Pre-trained Language Models (PLMs) has greatly increased the demand for model compression. Despite various methods to compress BERT or its variants, there are few attempts to compress generative PLMs, and…

Computation and Language · Computer Science 2022-07-19 Chaofan Tao , Lu Hou , Wei Zhang , Lifeng Shang , Xin Jiang , Qun Liu , Ping Luo , Ngai Wong

We demonstrate that replacing an LSTM encoder with a self-attentive architecture can lead to improvements to a state-of-the-art discriminative constituency parser. The use of attention makes explicit the manner in which information is…

Computation and Language · Computer Science 2018-05-04 Nikita Kitaev , Dan Klein

Researchers have recently started investigating deep neural networks for dialogue applications. In particular, generative sequence-to-sequence (Seq2Seq) models have shown promising results for unstructured tasks, such as word-level dialogue…

Computation and Language · Computer Science 2016-11-21 Iulian Vlad Serban , Ryan Lowe , Laurent Charlin , Joelle Pineau

Variational autoencoders (VAEs) are essential tools in end-to-end representation learning. However, the sequential text generation common pitfall with VAEs is that the model tends to ignore latent variables with a strong auto-regressive…

Machine Learning · Computer Science 2021-02-26 Yang Zhao , Ping Yu , Suchismit Mahapatra , Qinliang Su , Changyou Chen

Tabular data is among the oldest and most ubiquitous forms of data. However, the generation of synthetic samples with the original data's characteristics remains a significant challenge for tabular data. While many generative models from…

Machine Learning · Computer Science 2023-04-25 Vadim Borisov , Kathrin Seßler , Tobias Leemann , Martin Pawelczyk , Gjergji Kasneci

Even though BERT achieves successful performance improvements in various supervised learning tasks, applying BERT for unsupervised tasks still holds a limitation that it requires repetitive inference for computing contextual language…

Computation and Language · Computer Science 2020-04-20 Joongbo Shin , Yoonhyung Lee , Seunghyun Yoon , Kyomin Jung

State-of-the-art results on neural machine translation often use attentional sequence-to-sequence models with some form of convolution or recursion. Vaswani et al. (2017) propose a new architecture that avoids recurrence and convolution…

Artificial Intelligence · Computer Science 2017-11-08 Karim Ahmed , Nitish Shirish Keskar , Richard Socher

In this paper, we introduce a novel technique for content safety and prompt injection classification for Large Language Models. Our technique, Layer Enhanced Classification (LEC), trains a Penalized Logistic Regression (PLR) classifier on…

Computation and Language · Computer Science 2024-12-19 Mason Sawtell , Tula Masterman , Sandi Besen , Jim Brown

In this paper, we give an in-depth analysis on the mathematical problem formulations and the probabilistic optimization explorations for some of the key components in Transformer model [33] in the field of generative AI. We explore and…

Machine Learning · Computer Science 2024-10-25 Fulu Li

Language Models are being widely used in Education. Even though modern deep learning models achieve very good performance on question-answering tasks, sometimes they make errors. To avoid misleading students by showing wrong answers, it is…

Computation and Language · Computer Science 2023-08-09 Jogi Suda Neto , Li Deng , Thejaswi Raya , Reza Shahbazi , Nick Liu , Adhitya Venkatesh , Miral Shah , Neeru Khosla , Rodrigo Capobianco Guido

Fine-tuning of pre-trained transformer networks such as BERT yield state-of-the-art results for text classification tasks. Typically, fine-tuning is performed on task-specific training datasets in a supervised manner. One can also fine-tune…

Computation and Language · Computer Science 2020-06-12 Gregor Wiedemann , Seid Muhie Yimam , Chris Biemann

There have been various types of pretraining architectures including autoencoding models (e.g., BERT), autoregressive models (e.g., GPT), and encoder-decoder models (e.g., T5). However, none of the pretraining frameworks performs the best…

Computation and Language · Computer Science 2022-03-18 Zhengxiao Du , Yujie Qian , Xiao Liu , Ming Ding , Jiezhong Qiu , Zhilin Yang , Jie Tang

Multiscale feature hierarchies have been witnessed the success in the computer vision area. This further motivates researchers to design multiscale Transformer for natural language processing, mostly based on the self-attention mechanism.…

Computation and Language · Computer Science 2022-06-22 Bei Li , Tong Zheng , Yi Jing , Chengbo Jiao , Tong Xiao , Jingbo Zhu

Despite the great promise of Transformers in many sequence modeling tasks (e.g., machine translation), their deterministic nature hinders them from generalizing to high entropy tasks such as dialogue response generation. Previous work…

Computation and Language · Computer Science 2020-03-31 Zhaojiang Lin , Genta Indra Winata , Peng Xu , Zihan Liu , Pascale Fung

Language models often pre-train on large unsupervised text corpora, then fine-tune on additional task-specific data. However, typical fine-tuning schemes do not prioritize the examples that they tune on. We show that, if you can prioritize…

Computation and Language · Computer Science 2023-05-12 Ian Osband , Seyed Mohammad Asghari , Benjamin Van Roy , Nat McAleese , John Aslanides , Geoffrey Irving