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Neural text generation is a key tool in natural language applications, but it is well known there are major problems at its core. In particular, standard likelihood training and decoding leads to dull and repetitive outputs. While some…

Machine Learning · Computer Science 2019-09-30 Sean Welleck , Ilia Kulikov , Stephen Roller , Emily Dinan , Kyunghyun Cho , Jason Weston

As one popular modeling approach for end-to-end speech recognition, attention-based encoder-decoder models are known to suffer the length bias and corresponding beam problem. Different approaches have been applied in simple beam search to…

Audio and Speech Processing · Electrical Eng. & Systems 2023-10-24 Wei Zhou , Ralf Schlüter , Hermann Ney

Keyphrase extraction aims at automatically extracting a list of "important" phrases representing the key concepts in a document. Prior approaches for unsupervised keyphrase extraction resorted to heuristic notions of phrase importance via…

Computation and Language · Computer Science 2023-02-20 Rishabh Joshi , Vidhisha Balachandran , Emily Saldanha , Maria Glenski , Svitlana Volkova , Yulia Tsvetkov

Unsupervised feature selection is commonly formulated as a multiobjective optimisation problem that jointly optimises subset quality and subset size. Yet the behaviour of this formulation depends critically on the choice of evaluation…

Machine Learning · Computer Science 2026-05-22 Mathieu Cherpitel , Thomas Bäck , Martijn R. Tannemaat , Anna V. Kononova

Unsupervised object re-identification targets at learning discriminative representations for object retrieval without any annotations. Clustering-based methods conduct training with the generated pseudo labels and currently dominate this…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Xiao Zhang , Yixiao Ge , Yu Qiao , Hongsheng Li

Thinking aloud is an effective meta-cognitive strategy human reasoners apply to solve difficult problems. We suggest to improve the reasoning ability of pre-trained neural language models in a similar way, namely by expanding a task's…

Computation and Language · Computer Science 2021-03-25 Gregor Betz , Kyle Richardson , Christian Voigt

The massive amounts of web-mined parallel data contain large amounts of noise. Semantic misalignment, as the primary source of the noise, poses a challenge for training machine translation systems. In this paper, we first introduce a…

Computation and Language · Computer Science 2025-02-10 Yan Meng , Di Wu , Christof Monz

Subword modeling for zero-resource languages aims to learn low-level representations of speech audio without using transcriptions or other resources from the target language (such as text corpora or pronunciation dictionaries). A good…

Audio and Speech Processing · Electrical Eng. & Systems 2020-04-20 Enno Hermann , Herman Kamper , Sharon Goldwater

Scene text erasing seeks to erase text contents from scene images and current state-of-the-art text erasing models are trained on large-scale synthetic data. Although data synthetic engines can provide vast amounts of annotated training…

Computer Vision and Pattern Recognition · Computer Science 2023-05-01 Xiangcheng Du , Zhao Zhou , Yingbin Zheng , Xingjiao Wu , Tianlong Ma , Cheng Jin

Speech evaluation measures a learners oral proficiency using automatic models. Corpora for training such models often pose sparsity challenges given that there often is limited scored data from teachers, in addition to the score…

Artificial Intelligence · Computer Science 2024-09-24 Huayun Zhang , Jeremy H. M. Wong , Geyu Lin , Nancy F. Chen

Semantic search is an important task which objective is to find the relevant index from a database for query. It requires a retrieval model that can properly learn the semantics of sentences. Transformer-based models are widely used as…

Machine Learning · Computer Science 2022-09-28 Mingxi Tan , Alexis Rolland , Andong Tian

Contemporary text-to-image models exhibit a surprising degree of mode collapse, as can be seen when sampling several images given the same text prompt. Previous work has attempted to address this issue by steering the model using guidance…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Anne Harrington , A. Sophia Koepke , Shyamgopal Karthik , Trevor Darrell , Alexei A. Efros

A major goal of unsupervised learning is to discover data representations that are useful for subsequent tasks, without access to supervised labels during training. Typically, this involves minimizing a surrogate objective, such as the…

Machine Learning · Computer Science 2019-02-27 Luke Metz , Niru Maheswaranathan , Brian Cheung , Jascha Sohl-Dickstein

Listening in noisy environments can be difficult even for individuals with a normal hearing thresholds. The speech signal can be masked by noise, which may lead to word misperceptions on the side of the listener, and overall difficulty to…

Computation and Language · Computer Science 2021-07-20 Anupama Chingacham , Vera Demberg , Dietrich Klakow

Hierarchical reinforcement learning has been a compelling approach for achieving goal directed behavior over long sequences of actions. However, it has been challenging to implement in realistic or open-ended environments. A main challenge…

Machine Learning · Computer Science 2023-09-22 Arun Ahuja , Kavya Kopparapu , Rob Fergus , Ishita Dasgupta

While language models have shown remarkable performance across diverse tasks, they still encounter challenges in complex reasoning scenarios. Recent research suggests that language models trained on linearized search traces toward…

Artificial Intelligence · Computer Science 2025-10-28 Seungyong Moon , Bumsoo Park , Hyun Oh Song

Although deep neural networks have achieved remarkable results for the task of semantic segmentation, they usually fail to generalize towards new domains, especially when performing synthetic-to-real adaptation. Such domain shift is…

Computer Vision and Pattern Recognition · Computer Science 2021-10-07 Adriano Cardace , Pierluigi Zama Ramirez , Samuele Salti , Luigi Di Stefano

Masked language modeling (MLM) plays a key role in pretraining large language models. But the MLM objective is often dominated by high-frequency words that are sub-optimal for learning factual knowledge. In this work, we propose an approach…

Computation and Language · Computer Science 2023-04-05 Nafis Sadeq , Byungkyu Kang , Prarit Lamba , Julian McAuley

User-defined keyword spotting is a task to detect new spoken terms defined by users. This can be viewed as a few-shot learning problem since it is unreasonable for users to define their desired keywords by providing many examples. To solve…

Machine Learning · Computer Science 2022-10-06 Wei-Tsung Kao , Yuan-Kuei Wu , Chia-Ping Chen , Zhi-Sheng Chen , Yu-Pao Tsai , Hung-Yi Lee

We consider the unconstrained optimization problem whose objective function is composed of a smooth and a non-smooth conponents where the smooth component is the expectation a random function. This type of problem arises in some interesting…

Optimization and Control · Mathematics 2011-07-01 Qihang Lin , Xi Chen , Javier Pena