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We describe a data structure that supports access, rank and select queries, as well as symbol insertions and deletions, on a string $S[1,n]$ over alphabet $[1..\sigma]$ in time $O(\lg n/\lg\lg n)$, which is optimal even on binary sequences…

Data Structures and Algorithms · Computer Science 2013-02-04 Gonzalo Navarro , Yakov Nekrich

In the "Big Data" era, a lot of data must be processed and moved between processing and memory units. New technologies and architectures have emerged to improve system performance and overcome the memory bottleneck. The memristor is a…

Hardware Architecture · Computer Science 2026-02-26 Seyed Erfan Fatemieh , Samane Asgari , Mohammad Reza Reshadinezhad

Current Open-Domain Question Answering (ODQA) model paradigm often contains a retrieving module and a reading module. Given an input question, the reading module predicts the answer from the relevant passages which are retrieved by the…

Computation and Language · Computer Science 2022-06-07 Donghan Yu , Chenguang Zhu , Yuwei Fang , Wenhao Yu , Shuohang Wang , Yichong Xu , Xiang Ren , Yiming Yang , Michael Zeng

In this paper, we present a new data structure called the packed compact trie (packed c-trie) which stores a set $S$ of $k$ strings of total length $n$ in $n \log\sigma + O(k \log n)$ bits of space and supports fast pattern matching queries…

Data Structures and Algorithms · Computer Science 2017-10-11 Takuya Takagi , Shunsuke Inenaga , Kunihiko Sadakane , Hiroki Arimura

Multimodal regression aims to predict a continuous target from heterogeneous input sources and typically relies on fusion strategies such as early or late fusion. However, existing methods lack principled tools to disentangle and quantify…

Machine Learning · Computer Science 2025-12-29 Zhaozhao Ma , Shujian Yu

We propose "Generative Fusion Decoding" (GFD), a novel shallow fusion framework designed to integrate large language models (LLMs) into cross-modal text recognition systems for automatic speech recognition (ASR) and optical character…

Computation and Language · Computer Science 2025-06-12 Chan-Jan Hsu , Yi-Chang Chen , Feng-Ting Liao , Pei-Chen Ho , Yu-Hsiang Wang , Po-Chun Hsu , Da-shan Shiu

Nonnegative matrix factorization (NMF) has attracted much attention in the last decade as a dimension reduction method in many applications. Due to the explosion in the size of data, naturally the samples are collected and stored…

Machine Learning · Computer Science 2018-02-27 Tianxiang Gao , Chris Chu

Early diagnosis of Alzheimer's Disease (AD) is crucial for delaying its progression. While AI-based speech detection is non-invasive and cost-effective, it faces a critical data efficiency dilemma due to medical data scarcity and privacy…

Computation and Language · Computer Science 2026-02-17 Xiao Wei , Bin Wen , Yuqin Lin , Kai Li , Mingyang gu , Xiaobao Wang , Longbiao Wang , Jianwu Dang

The deployment of large-scale neural networks within the Open Radio Access Network (O-RAN) architecture is pivotal for enabling native edge intelligence. However, this paradigm faces two critical bottlenecks: the prohibitive memory…

Information Theory · Computer Science 2026-01-05 Zhiheng Guo , Zhaoyang Liu , Zihan Cen , Chenyuan Feng , Xinghua Sun , Xiang Chen , Tony Q. S. Quek , Xijun Wang

The membership problem asks to maintain a set $S\subseteq[u]$, supporting insertions and membership queries, i.e., testing if a given element is in the set. A data structure that computes exact answers is called a dictionary. When a (small)…

Data Structures and Algorithms · Computer Science 2020-04-28 Mingmou Liu , Yitong Yin , Huacheng Yu

Assuming we are in a Word-RAM model with word size $w$, we show that we can construct in $o(w)$ time an error correcting code with a constant relative positive distance that maps numbers of $w$ bits into $\Theta(w)$-bit numbers, and such…

Data Structures and Algorithms · Computer Science 2014-09-16 Djamal Belazzougui

As a fundamental task in natural language processing, word embedding converts each word into a representation in a vector space. A challenge with word embedding is that as the vocabulary grows, the vector space's dimension increases, which…

Computation and Language · Computer Science 2024-11-05 Jintang Xue , Yun-Cheng Wang , Chengwei Wei , C. -C. Jay Kuo

LLMs are increasingly applied to recommendation, retrieval, and reasoning, yet deploying a single end-to-end model that can jointly support these behaviors over large, heterogeneous catalogs remains challenging. Such systems must generate…

Continuous word representation (aka word embedding) is a basic building block in many neural network-based models used in natural language processing tasks. Although it is widely accepted that words with similar semantics should be close to…

Computation and Language · Computer Science 2020-03-18 Chengyue Gong , Di He , Xu Tan , Tao Qin , Liwei Wang , Tie-Yan Liu

We consider the dynamic dictionary problem for multisets. Given an upper bound $n$ on the total cardinality of the multiset (i.e., including multiplicities) at any point in time, the goal is to design a data structure that supports…

Data Structures and Algorithms · Computer Science 2020-05-06 Ioana Oriana Bercea , Guy Even

In the context of knowledge compilation (KC), we study the effect of augmenting Ordered Binary Decision Diagrams (OBDD) with two kinds of decomposition nodes, i.e., AND-vertices and OR-vertices which denote conjunctive and disjunctive…

Artificial Intelligence · Computer Science 2014-10-28 Yong Lai , Dayou Liu

There are several data structures which can calculate the prefix sums of an array efficiently, while handling point updates on the array, such as Segment Trees and Binary Indexed Trees (BIT). Both these data structures can handle the these…

Data Structures and Algorithms · Computer Science 2016-12-30 Anubhav Baweja

We show how to build several data structures of central importance to string processing, taking as input the Burrows-Wheeler transform (BWT) and using small extra working space. Let $n$ be the text length and $\sigma$ be the alphabet size.…

Data Structures and Algorithms · Computer Science 2019-08-14 Nicola Prezza , Giovanna Rosone

A new class of applications based on visual search engines are emerging, especially on smart-phones that have evolved into powerful tools for processing images and videos. The state-of-the-art algorithms for large visual content recognition…

Computer Vision and Pattern Recognition · Computer Science 2016-04-15 Giuseppe Amato , Fabrizio Falchi , Claudio Gennaro

We provide elementary algorithms for two preservation theorems for first-order sentences (FO) on the class \^ad of all finite structures of degree at most d: For each FO-sentence that is preserved under extensions (homomorphisms) on \^ad, a…

Logic in Computer Science · Computer Science 2017-01-11 Frederik Harwath , Lucas Heimberg , Nicole Schweikardt
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