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Long maximal exact matches (MEMs) are used in many genomics applications such as read classification and sequence alignment. Li's ropebwt3 finds long MEMs quickly because it can often ignore much of its input. In this paper we show that a…

Background: Short sequence substrings of a fixed length k, called k-mers, are a ubiquitous computational primitive in bioinformatics, used across sequence indexing, read mapping, genome assembly, metagenomic classification, and comparative…

Genomics · Quantitative Biology 2026-05-15 Lucas Czech

We propose a lightweight data structure for indexing and querying collections of NGS reads data in main memory. The data structure supports the interface proposed in the pioneering work by Philippe et al. for counting and locating $k$-mers…

Data Structures and Algorithms · Computer Science 2017-03-03 Tomasz Kowalski , Szymon Grabowski , Sebastian Deorowicz

Minimum Bayes risk (MBR) decoding is a decision rule of text generation tasks that outperforms conventional maximum a posterior (MAP) decoding using beam search by selecting high-quality outputs based on a utility function rather than those…

Computation and Language · Computer Science 2024-10-22 Hiroyuki Deguchi , Yusuke Sakai , Hidetaka Kamigaito , Taro Watanabe

Keyphrase extraction (KPE) automatically extracts phrases in a document that provide a concise summary of the core content, which benefits downstream information retrieval and NLP tasks. Previous state-of-the-art (SOTA) methods select…

Computation and Language · Computer Science 2023-03-01 Linhan Zhang , Qian Chen , Wen Wang , Chong Deng , Shiliang Zhang , Bing Li , Wei Wang , Xin Cao

We present scalable distributed-memory algorithms for sparse matrix permutation, extraction, and assignment. Our methods follow an Identify-Exchange-Build (IEB) strategy where each process identifies the local nonzeros to be sent, exchanges…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-09-26 Elaheh Hassani , Md Taufique Hussain , Ariful Azad

The Parallel Meaning Bank (PMB) serves as a corpus for semantic processing with a focus on semantic parsing and text generation. Currently, we witness an excellent performance of neural parsers and generators on the PMB. This might suggest…

Computation and Language · Computer Science 2024-09-17 Xiao Zhang , Chunliu Wang , Rik van Noord , Johan Bos

Semantic segmentation requires dense pixel-level annotations, which are costly and time-consuming to acquire. To address this, we present SeSAM, a framework that uses a foundational segmentation model, i.e. Segment Anything Model (SAM),…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Anurag Das , Anna Kukleva , Xinting Hu , Yuki M. Asano , Bernt Schiele

Training with sparse annotations is known to reduce the performance of object detectors. Previous methods have focused on proxies for missing ground truth annotations in the form of pseudo-labels for unlabeled boxes. We observe that…

Computer Vision and Pattern Recognition · Computer Science 2023-08-29 Saksham Suri , Sai Saketh Rambhatla , Rama Chellappa , Abhinav Shrivastava

While NLP models significantly impact our lives, there are rising concerns about privacy invasion. Although federated learning enhances privacy, attackers may recover private training data by exploiting model parameters and gradients.…

Artificial Intelligence · Computer Science 2024-10-23 Mengjiao Zhang , Jia Xu

This paper concerns pseudo labelling in segmentation. Our contribution is fourfold. Firstly, we present a new formulation of pseudo-labelling as an Expectation-Maximization (EM) algorithm for clear statistical interpretation. Secondly, we…

Computer Vision and Pattern Recognition · Computer Science 2022-09-14 Mou-Cheng Xu , Yukun Zhou , Chen Jin , Marius de Groot , Daniel C. Alexander , Neil P. Oxtoby , Yipeng Hu , Joseph Jacob

We present COBS, a COmpact Bit-sliced Signature index, which is a cross-over between an inverted index and Bloom filters. Our target application is to index $k$-mers of DNA samples or $q$-grams from text documents and process approximate…

Databases · Computer Science 2019-07-29 Timo Bingmann , Phelim Bradley , Florian Gauger , Zamin Iqbal

The output of spectral clustering is a collection of eigenvalues and eigenvectors that encode important connectivity information about a graph or a manifold. This connectivity information is often not cleanly represented in the eigenvectors…

Numerical Analysis · Mathematics 2019-05-22 Gary Froyland , Christopher P. Rock , Konstantinos Sakellariou

For taxonomic classification, we are asked to index the genomes in a phylogenetic tree such that later, given a DNA read, we can quickly choose a small subtree likely to contain the genome from which that read was drawn. Although popular…

Data Structures and Algorithms · Computer Science 2024-04-08 Dominika Draesslerová , Omar Ahmed , Travis Gagie , Jan Holub , Ben Langmead , Giovanni Manzini , Gonzalo Navarro

Similarity search based on a distance function in metric spaces is a fundamental problem for many applications. Queries for similar objects lead to the well-known machine learning task of nearest-neighbours identification. Many data…

Information Retrieval · Computer Science 2022-08-05 Felipe Ortega , Maria Jesus Algar , Isaac Martín de Diego , Javier M. Moguerza

Fine tuning self supervised pretrained models using pseudo labels can effectively improve speech recognition performance. But, low quality pseudo labels can misguide decision boundaries and degrade performance. We propose a simple yet…

Sound · Computer Science 2022-11-01 Zezhong Jin , Dading Zhong , Xiao Song , Zhaoyi Liu , Naipeng Ye , Qingcheng Zeng

This paper proposes superblock pruning (SP) during top-k online document retrieval for learned sparse representations. SP structures the sparse index as a set of superblocks on a sequence of document blocks and conducts a superblock-level…

Information Retrieval · Computer Science 2026-02-04 Parker Carlson , Wentai Xie , Shanxiu He , Tao Yang

This paper introduces a high-throughput software tool framework called {\it sam2bam} that enables users to significantly speedup pre-processing for next-generation sequencing data. The sam2bam is especially efficient on single-node…

Genomics · Quantitative Biology 2017-02-08 Takeshi Ogasawara , Yinhe Cheng , Tzy-Hwa Kathy Tzeng

With the explosive growth of data, long-sequence modeling has become increasingly important in tasks such as natural language processing and bioinformatics. However, existing methods face inherent trade-offs between efficiency and memory.…

Machine Learning · Computer Science 2025-10-07 Youjin Wang , Yangjingyi Chen , Jiahao Yan , Jiaxuan Lu , Xiao Sun

Semantic segmentation is a crucial task in medical imaging. Although supervised learning techniques have proven to be effective in performing this task, they heavily depend on large amounts of annotated training data. The recently…

Computer Vision and Pattern Recognition · Computer Science 2024-11-20 Ron Keuth , Lasse Hansen , Maren Balks , Ronja Jäger , Anne-Nele Schröder , Ludger Tüshaus , Mattias Heinrich
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