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Recently, Transformer-based models have been proven effective in the abstractive summarization task by creating fluent and informative summaries. Nevertheless, these models still suffer from the short-range dependency problem, causing them…

Computation and Language · Computer Science 2026-05-13 Thong Nguyen , Anh Tuan Luu , Truc Lu , Tho Quan

The skip-gram (SG) model learns word representation by predicting the words surrounding a center word from unstructured text data. However, not all words in the context window contribute to the meaning of the center word. For example, less…

Computation and Language · Computer Science 2021-02-18 Dongjae Kim , Jong-Kook Kim

We approach the problem of generalizing pre-trained word embeddings beyond fixed-size vocabularies without using additional contextual information. We propose a subword-level word vector generation model that views words as bags of…

Computation and Language · Computer Science 2018-09-13 Jinman Zhao , Sidharth Mudgal , Yingyu Liang

We present a formal framework for the development of a family of discriminative learning algorithms for Probabilistic Context-Free Grammars (PCFGs) based on a generalization of criterion-H. First of all, we propose the H-criterion as the…

Computation and Language · Computer Science 2021-03-17 Mauricio Maca , José Miguel Benedí , Joan Andreu Sánchez

In zero-shot text-to-speech, achieving a balance between fidelity to the target speaker and adherence to text content remains a challenge. While classifier-free guidance (CFG) strategies have shown promising results in image generation,…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-25 John Zheng , Farhad Maleki

We present an algorithm for extracting a subclass of the context free grammars (CFGs) from a trained recurrent neural network (RNN). We develop a new framework, pattern rule sets (PRSs), which describe sequences of deterministic finite…

Formal Languages and Automata Theory · Computer Science 2021-03-30 Daniel M. Yellin , Gail Weiss

Many natural language processing tasks, e.g., coreference resolution and semantic role labeling, require selecting text spans and making decisions about them. A typical approach to such tasks is to score all possible spans and greedily…

Computation and Language · Computer Science 2023-08-24 Tianyu Liu , Yuchen Eleanor Jiang , Ryan Cotterell , Mrinmaya Sachan

Systematic Generalization refers to a learning algorithm's ability to extrapolate learned behavior to unseen situations that are distinct but semantically similar to its training data. As shown in recent work, state-of-the-art deep learning…

Artificial Intelligence · Computer Science 2020-10-06 Tong Gao , Qi Huang , Raymond J. Mooney

Classifier-Free Guidance (CFG) has been widely used in text-to-image diffusion models, where the CFG scale is introduced to control the strength of text guidance on the whole image space. However, we argue that a global CFG scale results in…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Dazhong Shen , Guanglu Song , Zeyue Xue , Fu-Yun Wang , Yu Liu

Neural text classification models typically treat output labels as categorical variables which lack description and semantics. This forces their parametrization to be dependent on the label set size, and, hence, they are unable to scale to…

Computation and Language · Computer Science 2019-01-31 Nikolaos Pappas , James Henderson

The problem of identifying a probabilistic context free grammar has two aspects: the first is determining the grammar's topology (the rules of the grammar) and the second is estimating probabilistic weights for each rule. Given the hardness…

Logic in Computer Science · Computer Science 2023-06-22 Dana Fisman , Dolav Nitay , Michal Ziv-Ukelson

Sign language translation systems typically require English as an intermediary language, creating barriers for non-English speakers in the global deaf community. We present Canonical Semantic Form (CSF), a language-agnostic semantic…

Computation and Language · Computer Science 2026-01-06 Tran Sy Bao

Are we using the right potential functions in the Conditional Random Field models that are popular in the Vision community? Semantic segmentation and other pixel-level labelling tasks have made significant progress recently due to the deep…

Computer Vision and Pattern Recognition · Computer Science 2018-01-03 Måns Larsson , Anurag Arnab , Fredrik Kahl , Shuai Zheng , Philip Torr

Classifier-Free Guidance (CFG) has recently emerged in text-to-image generation as a lightweight technique to encourage prompt-adherence in generations. In this work, we demonstrate that CFG can be used broadly as an inference-time…

Computation and Language · Computer Science 2023-07-03 Guillaume Sanchez , Honglu Fan , Alexander Spangher , Elad Levi , Pawan Sasanka Ammanamanchi , Stella Biderman

Translation models based on hierarchical phrase-based statistical machine translation (HSMT) have shown better performances than the non-hierarchical phrase-based counterparts for some language pairs. The standard approach to HSMT learns…

Computation and Language · Computer Science 2020-04-06 Felipe Sánchez-Martínez , Juan Antonio Pérez-Ortiz , Rafael C. Carrasco

The paper presents an approach to semantic grounding of language models (LMs) that conceptualizes the LM as a conditional model generating text given a desired semantic message formalized as a set of entity-relationship triples. It embeds…

Computation and Language · Computer Science 2022-11-17 Chris Alberti , Kuzman Ganchev , Michael Collins , Sebastian Gehrmann , Ciprian Chelba

Most previous approaches to Chinese word segmentation formalize this problem as a character-based sequence labeling task where only contextual information within fixed sized local windows and simple interactions between adjacent tags can be…

Computation and Language · Computer Science 2016-12-05 Deng Cai , Hai Zhao

Phrase-structure grammars are effective models for important syntactic and semantic aspects of natural languages, but can be computationally too demanding for use as language models in real-time speech recognition. Therefore, finite-state…

cmp-lg · Computer Science 2008-02-03 Fernando C. N. Pereira , Rebecca N. Wright

The paper proposes the task of universal semantic tagging---tagging word tokens with language-neutral, semantically informative tags. We argue that the task, with its independent nature, contributes to better semantic analysis for…

Computation and Language · Computer Science 2017-10-02 Lasha Abzianidze , Johan Bos

Text categorization is the task of assigning labels to documents written in a natural language, and it has numerous real-world applications including sentiment analysis as well as traditional topic assignment tasks. In this paper, we…

Computation and Language · Computer Science 2020-03-05 Changzeng Fu , Chaoran Liu , Carlos Toshinori Ishi , Yuichiro Yoshikawa , Hiroshi Ishiguro