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Characterizing noisy or ancient documents is a challenging problem up to now. Many techniques have been done in order to effectuate feature extraction and image indexation for such documents. Global approaches are in general less robust and…

Computer Vision and Pattern Recognition · Computer Science 2013-08-30 Nizar Zaghden , Remy Mullot , Mohamed Adel Alimi

Plant classification and identification has so far been an important and difficult task. In this paper, an efficient and systematic approach for extracting the leaf architecture characters from captured digital images is proposed. The input…

Computer Vision and Pattern Recognition · Computer Science 2018-01-09 Mahmoud Sadeghi , Ali Zakerolhosseini , Ali Sonboli

Searching for a person's name is a common online activity. However, Web search engines provide few accurate results to queries containing names. In contrast to a general word which has only one correct spelling, there are several legitimate…

Information Retrieval · Computer Science 2021-02-02 Aviad Elyashar , Rami Puzis , Michael Fire

Many classical and learning-based optical flow methods rely on hierarchical concepts to improve both accuracy and robustness. However, one of the currently most successful approaches -- RAFT -- hardly exploits such concepts. In this work,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Azin Jahedi , Lukas Mehl , Marc Rivinius , Andrés Bruhn

Taxonomies are an essential knowledge representation, yet most studies on automatic taxonomy construction (ATC) resort to manual evaluation to score proposed algorithms. We argue that automatic taxonomy evaluation (ATE) is just as important…

Computation and Language · Computer Science 2023-07-20 Tianjian Gao , Phillipe Langlais

We address the problem of answering queries over a distributed information system, storing objects indexed by terms organized in a taxonomy. The taxonomy consists of subsumption relationships between negation-free DNF formulas on terms and…

Distributed, Parallel, and Cluster Computing · Computer Science 2011-09-13 Carlo Meghini , Yannis Tzitzikas , Veronica Coltella , Anastasia Analyti

This paper presents a new approach for the automatic license plate recognition, which includes the SIFT algorithm in step to locate the plate in the input image. In this new approach, besides the comparison of the features obtained with the…

Computer Vision and Pattern Recognition · Computer Science 2013-03-08 Francisco Assis da Silva , Almir Olivette Artero , Maria Stela Veludo de Paiva , Ricardo Luis Barbosa

Organizational charts, also known as org charts, are critical representations of an organization's structure and the hierarchical relationships between its components and positions. However, manually extracting information from org charts…

Computer Vision and Pattern Recognition · Computer Science 2023-11-20 Nikhil Manali , David Doermann , Mahesh Desai

A cascaded iterative Fourier transform (CIFT) algorithm is presented for optical security applications. Two phase-masks are designed and located in the input and the Fourier domains of a 4-f correlator respectively, in order to implement…

Optics · Physics 2009-11-10 Guohai Situ , Jingjuan Zhang

Supervised fine-tuning (SFT) is a standard approach to adapting large language models (LLMs) to new domains. In this work, we improve the statistical efficiency of SFT by selecting an informative subset of training examples. Specifically,…

Machine Learning · Computer Science 2025-05-22 Rohan Deb , Kiran Thekumparampil , Kousha Kalantari , Gaurush Hiranandani , Shoham Sabach , Branislav Kveton

Constructing taxonomies from citation graphs is essential for organizing scientific knowledge, facilitating literature reviews, and identifying emerging research trends. However, manual taxonomy construction is labor-intensive,…

Computation and Language · Computer Science 2025-02-28 Yuntong Hu , Zhuofeng Li , Zheng Zhang , Chen Ling , Raasikh Kanjiani , Boxin Zhao , Liang Zhao

The Data Mining process enables the end users to analyze, understand and use the extracted knowledge in an intelligent system or to support in the decision-making processes. However, many algorithms used in the process encounter large…

Databases · Computer Science 2011-12-09 Marcos Aurélio Domingues , Solange Oliveira Rezende

This article presents a novel approach to identifying and classifying intersections for semantic and topological mapping. More specifically, the proposed novel approach has the merit of generating a semantically meaningful map containing…

Robotics · Computer Science 2023-05-12 Scott Fredriksson , Akshit Saradagi , George Nikolakopoulos

Despite the eminent successes of deep neural networks, many architectures are often hard to transfer to irregularly-sampled and asynchronous time series that commonly occur in real-world datasets, especially in healthcare applications. This…

Machine Learning · Computer Science 2020-09-16 Max Horn , Michael Moor , Christian Bock , Bastian Rieck , Karsten Borgwardt

We introduce a new algorithm for constructing the generalized suffix array of a collection of highly similar strings. As a first step, we construct a compressed representation of the matching statistics of the collection with respect to a…

Data Structures and Algorithms · Computer Science 2024-04-16 Zsuzsanna Lipták , Francesco Masillo , Simon J. Puglisi

Feature extraction is a fundamental task in the application of machine learning methods to SAT solving. It is used in algorithm selection and configuration for solver portfolios and satisfiability classification. Many approaches have been…

Artificial Intelligence · Computer Science 2022-05-02 Benjamin Provan-Bessell , Marco Dalla , Andrea Visentin , Barry O'Sullivan

Deep neural networks for machine comprehension typically utilizes only word or character embeddings without explicitly taking advantage of structured linguistic information such as constituency trees and dependency trees. In this paper, we…

Computation and Language · Computer Science 2017-09-04 Rui Liu , Junjie Hu , Wei Wei , Zi Yang , Eric Nyberg

There are various approaches to exploiting "hidden structure" in instances of hard combinatorial problems to allow faster algorithms than for general unstructured or random instances. For SAT and its counting version #SAT, hidden structure…

Data Structures and Algorithms · Computer Science 2012-04-30 Serge Gaspers , Stefan Szeider

Time series classification is an application of particular interest with the increase of data to monitor. Classical techniques for time series classification rely on point-to-point distances. Recently, Bag-of-Words approaches have been used…

Machine Learning · Computer Science 2016-01-14 Adeline Bailly , Simon Malinowski , Romain Tavenard , Thomas Guyet , Laetitia Chapel

Although supervised finetuning (SFT) has emerged as an essential technique to align large language models with humans, it is considered superficial, with style learning being its nature. At the same time, recent works indicate the…

Computation and Language · Computer Science 2024-02-12 Ming Shen