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Image captioning is a longstanding problem in the field of computer vision and natural language processing. To date, researchers have produced impressive state-of-the-art performance in the age of deep learning. Most of these…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Zihang Meng , David Yang , Xuefei Cao , Ashish Shah , Ser-Nam Lim

We propose Okapi, a simple, efficient, and general method for robust semi-supervised learning based on online statistical matching. Our method uses a nearest-neighbours-based matching procedure to generate cross-domain views for a…

Computer Vision and Pattern Recognition · Computer Science 2022-11-11 Myles Bartlett , Sara Romiti , Viktoriia Sharmanska , Novi Quadrianto

Digital humanities scholars increasingly use Large Language Models for historical document digitization, yet lack appropriate evaluation frameworks for LLM-based OCR. Traditional metrics fail to capture temporal biases and period-specific…

Computer Vision and Pattern Recognition · Computer Science 2025-10-09 Maria Levchenko

The availability of parallel sentence simplification (SS) is scarce for neural SS modelings. We propose an unsupervised method to build SS corpora from large-scale bilingual translation corpora, alleviating the need for SS supervised…

Computation and Language · Computer Science 2021-09-02 Xinyu Lu , Jipeng Qiang , Yun Li , Yunhao Yuan , Yi Zhu

Unsupervised word embeddings have become a popular approach of word representation in NLP tasks. However there are limitations to the semantics represented by unsupervised embeddings, and inadequate fine-tuning of embeddings can lead to…

Computation and Language · Computer Science 2019-06-10 Xiao Zhang , Ji Wu , Dejing Dou

Despite recent advances, standard sequence labeling systems often fail when processing noisy user-generated text or consuming the output of an Optical Character Recognition (OCR) process. In this paper, we improve the noise-aware training…

Computation and Language · Computer Science 2021-05-26 Marcin Namysl , Sven Behnke , Joachim Köhler

Prompt learning has emerged as a promising method for adapting pre-trained visual-language models (VLMs) to a range of downstream tasks. While optimizing the context can be effective for improving performance on specific tasks, it can often…

Computation and Language · Computer Science 2025-06-04 Fangming Cui , Jan Fong , Rongfei Zeng , Xinmei Tian , Jun Yu

This paper studies the practicality of the current state-of-the-art unsupervised methods in neural machine translation (NMT). In ten translation tasks with various data settings, we analyze the conditions under which the unsupervised…

Computation and Language · Computer Science 2020-04-23 Yunsu Kim , Miguel Graça , Hermann Ney

Language style transferring rephrases text with specific stylistic attributes while preserving the original attribute-independent content. One main challenge in learning a style transfer system is a lack of parallel data where the source…

Computation and Language · Computer Science 2018-08-27 Zhirui Zhang , Shuo Ren , Shujie Liu , Jianyong Wang , Peng Chen , Mu Li , Ming Zhou , Enhong Chen

Many studies on (Offline) Handwritten Text Recognition (HTR) systems have focused on building state-of-the-art models for line recognition on small corpora. However, adding HTR capability to a large scale multilingual OCR system poses new…

Computer Vision and Pattern Recognition · Computer Science 2019-06-18 R. Reeve Ingle , Yasuhisa Fujii , Thomas Deselaers , Jonathan Baccash , Ashok C. Popat

Robotic systems that rely primarily on self-supervised learning have the potential to decrease the amount of human annotation and engineering effort required to learn control strategies. In the same way that prior robotic systems have…

Machine Learning · Computer Science 2025-06-11 Chongyi Zheng , Benjamin Eysenbach , Homer Walke , Patrick Yin , Kuan Fang , Ruslan Salakhutdinov , Sergey Levine

Self-supervised learning has recently emerged as a strong alternative in document analysis. These approaches are now capable of learning high-quality image representations and overcoming the limitations of supervised methods, which require…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Marwa Dhiaf , Mohamed Ali Souibgui , Kai Wang , Yuyang Liu , Yousri Kessentini , Alicia Fornés , Ahmed Cheikh Rouhou

Lemmatization of standard languages is concerned with (i) abstracting over morphological differences and (ii) resolving token-lemma ambiguities of inflected words in order to map them to a dictionary headword. In the present paper we aim to…

Computation and Language · Computer Science 2019-03-19 Enrique Manjavacas , Ákos Kádár , Mike Kestemont

The dearth of clean textual data often acts as a bottleneck in several natural language processing applications. The data available often lacks proper case (uppercase or lowercase) information. This often comes up when text is obtained from…

Computation and Language · Computer Science 2021-01-21 Gopi Ramena , Divija Nagaraju , Sukumar Moharana , Debi Prasanna Mohanty , Naresh Purre

Effects of Optical Character Recognition (OCR) quality on historical information retrieval have so far been studied in data-oriented scenarios regarding the effectiveness of retrieval results. Such studies have either focused on the effects…

Information Retrieval · Computer Science 2022-08-12 Kimmo Kettunen , Heikki Keskustalo , Sanna Kumpulainen , Tuula Pääkkönen , Juha Rautiainen

Neural machine translation (NMT) systems amplify lexical biases present in their training data, leading to artificially impoverished language in output translations. These language-level characteristics render automatic translations…

Computation and Language · Computer Science 2025-06-02 Huiyuan Lai , Esther Ploeger , Rik van Noord , Antonio Toral

For most language combinations, parallel data is either scarce or simply unavailable. To address this, unsupervised machine translation (UMT) exploits large amounts of monolingual data by using synthetic data generation techniques such as…

Computation and Language · Computer Science 2021-07-20 Dana Ruiter , Dietrich Klakow , Josef van Genabith , Cristina España-Bonet

We describe an unsupervised method to create pseudo-parallel corpora for machine translation (MT) from unaligned text. We use multilingual BERT to create source and target sentence embeddings for nearest-neighbor search and adapt the model…

Computation and Language · Computer Science 2020-10-16 Phillip Keung , Julian Salazar , Yichao Lu , Noah A. Smith

The advent of large language models (LLMs) has revolutionized natural language processing, enabling unprecedented capabilities in understanding and generating human-like text. However, the computational cost and convergence times associated…

Computation and Language · Computer Science 2024-11-26 Kerim Büyükakyüz

Optical Character Recognition (OCR) is the process of extracting digitized text from images of scanned documents. While OCR systems have already matured in many languages, they still have shortcomings in cursive languages with overlapping…

Computer Vision and Pattern Recognition · Computer Science 2020-09-22 Hussein Osman , Karim Zaghw , Mostafa Hazem , Seifeldin Elsehely
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