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Sequences whose terms are equal to the number of functions with specified properties are considered. Properties are based on the notion of derangements in a more general sense. Several sequences which generalize the standard notion of…

Combinatorics · Mathematics 2007-05-23 Milan Janjić

We describe indexes for searching large data sets for variable-length-gapped (VLG) patterns. VLG patterns are composed of two or more subpatterns, between each adjacent pair of which is a gap-constraint specifying upper and lower bounds on…

Data Structures and Algorithms · Computer Science 2020-03-02 Manuel Cáceres , Simon J. Puglisi , Bella Zhukova

Sequence labeling (SL) is a fundamental research problem encompassing a variety of tasks, e.g., part-of-speech (POS) tagging, named entity recognition (NER), text chunking, etc. Though prevalent and effective in many downstream applications…

Computation and Language · Computer Science 2020-11-16 Zhiyong He , Zanbo Wang , Wei Wei , Shanshan Feng , Xianling Mao , Sheng Jiang

This paper introduces the YouTube-8M Video Understanding Challenge hosted as a Kaggle competition and also describes my approach to experimenting with various models. For each of my experiments, I provide the score result as well as…

Machine Learning · Statistics 2017-06-27 Edward Chen

Web search engines have marked everyone's life by transforming how one searches and accesses information. Search engines give special attention to the user interface, especially search engine result pages (SERP). The well-known ''10 blue…

Information Retrieval · Computer Science 2023-01-23 B. Oliveira , C. T. Lopes

A booming amount of information is continuously added to the Internet as structured and unstructured data, feeding knowledge bases such as DBpedia and Wikidata with billions of statements describing millions of entities. The aim of Question…

Computation and Language · Computer Science 2020-10-22 Anand Panchbhai , Tommaso Soru , Edgard Marx

In this work we resolve several conjectures stated in the On-Line Encyclopedia of Integer sequences.

Number Theory · Mathematics 2024-10-29 Sela Fried

Sequence A000975 in the Online Encyclopedia of Integer Sequences (OEIS) starts out 1, 2, 5, 10, 21, 42, 85, ... . As of July 1, 2016, the description in the OEIS lists several characterizations of this sequence and numerous examples of…

Combinatorics · Mathematics 2017-08-25 Paul K. Stockmeyer

In this paper, we give recurrence relations and identities for some integer sequences related to Ward numbers such as Ward-Lah numbers, varied Ward numbers and binomial Ward numbers. Most of the sequences are entered in the On-Line…

Combinatorics · Mathematics 2025-08-15 Aleks Žigon Tankosič

Video captioning is the process of describing the content of a sequence of images capturing its semantic relationships and meanings. Dealing with this task with a single image is arduous, not to mention how difficult it is for a video (or…

Computer Vision and Pattern Recognition · Computer Science 2022-04-14 Daniela Moctezuma , Tania Ramírez-delReal , Guillermo Ruiz , Othón González-Chávez

Despite recent advances in computer vision based on various convolutional architectures, video understanding remains an important challenge. In this work, we present and discuss a top solution for the large-scale video classification…

Computer Vision and Pattern Recognition · Computer Science 2019-01-17 Pavel Ostyakov , Elizaveta Logacheva , Roman Suvorov , Vladimir Aliev , Gleb Sterkin , Oleg Khomenko , Sergey I. Nikolenko

This paper presents the design and the current prototype implementation of an interactive vocal Information Retrieval system that can be used to access articles of a large newspaper archive using a telephone. The results of preliminary…

Digital Libraries · Computer Science 2007-05-23 Fabio Crestani

The recent history of The On-Line Encyclopedia of Integer Sequences (or OEIS), describing developments since 2009, and discussing recent sequences involving interesting unsolved problems and in many cases spectacular illustrations. These…

Combinatorics · Mathematics 2018-05-29 N. J. A. Sloane

The Ulam sequence is given by $a_1 =1, a_2 = 2$, and then, for $n \geq 3$, the element $a_n$ is defined as the smallest integer that can be written as the sum of two distinct earlier elements in a unique way. This gives the sequence $1, 2,…

Combinatorics · Mathematics 2018-08-28 Noah Kravitz , Stefan Steinerberger

The fundamental question considered in algorithms on strings is that of indexing, that is, preprocessing a given string for specific queries. By now we have a number of efficient solutions for this problem when the queries ask for an exact…

Data Structures and Algorithms · Computer Science 2023-04-04 Paweł Gawrychowski , Garance Gourdel , Tatiana Starikovskaya , Teresa Anna Steiner

Twitter messages often contain so-called hashtags to denote keywords related to them. Using a dataset of 29 million messages, I explore relations among these hashtags with respect to co-occurrences. Furthermore, I present an attempt to…

Computation and Language · Computer Science 2011-11-29 Jan Pöschko

In this paper we present the first step in a larger series of experiments for the induction of predicate/argument structures. The structures that we are inducing are very similar to the conceptual structures that are used in Frame Semantics…

Computation and Language · Computer Science 2009-02-16 Stergos D. Afantenos , Nicolas Hernandez

The purpose of this memoir is to discuss two very interesting properties of integer sequences. One is the law of apparition and the other is the law of repetition. Both have been extensively studied by mathematicians such as Ward, Lucas,…

Number Theory · Mathematics 2022-04-27 Masum Billal

A new family of sequences is proposed. An example of sequence of this family is more accurately studied. This sequence is composed by the integers $n$ for which the sum of binary digits is equal to the sum of binary digits of $n^2$. Some…

Number Theory · Mathematics 2007-05-23 Giuseppe Melfi

The following general idea looks crazy. What if another integer sequence follows each integer sequence like a shadow? I will demonstrate that this is indeed the case, perhaps not for every integer sequence, but for many of them.

Combinatorics · Mathematics 2021-11-05 Valentin Ovsienko