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The fitting or parameter estimation of complex ecological models is a challenging optimisation task, with a notable lack of tools for fitting complex, long runtime or stochastic models. calibrar is an R package that is dedicated to the…

定量方法 · 定量生物学 2024-04-30 Ricardo Oliveros-Ramos , Yunne-Jai Shin

We introduce NetworKit, an open-source software package for analyzing the structure of large complex networks. Appropriate algorithmic solutions are required to handle increasingly common large graph data sets containing up to billions of…

社会与信息网络 · 计算机科学 2015-11-16 Christian L. Staudt , Aleksejs Sazonovs , Henning Meyerhenke

Wilcoxon Rank-based tests are distribution-free alternatives to the popular two-sample and paired t-tests. For independent data, they are available in several R packages such as stats and coin. For clustered data, in spite of the recent…

统计计算 · 统计学 2017-06-13 Yujing Jiang , Xin He , Mei-Ling Ting Lee , Bernard Rosner , Jun Yan

BEANS software is a web based, easy to install and maintain, new tool to store and analyse data in a distributed way for a massive amount of data. It provides a clear interface for querying, filtering, aggregating, and plotting data from an…

天体物理仪器与方法 · 物理学 2016-03-25 Arkadiusz Hypki

The rise of the programmable web offers new opportunities for the empirically driven social sciences. The access, compilation and preparation of data from the programmable web for statistical analysis can, however, involve substantial…

统计计算 · 统计学 2016-07-20 Ulrich Matter

We introduce GraSPy, a Python library devoted to statistical inference, machine learning, and visualization of random graphs and graph populations. This package provides flexible and easy-to-use algorithms for analyzing and understanding…

社会与信息网络 · 计算机科学 2019-10-25 Jaewon Chung , Benjamin D. Pedigo , Eric W. Bridgeford , Bijan K. Varjavand , Hayden S. Helm , Joshua T. Vogelstein

Finite mixture modelling provides a framework for cluster analysis based on parsimonious Gaussian mixture models. Variable or feature selection is of particular importance in situations where only a subset of the available variables provide…

统计计算 · 统计学 2014-11-04 Luca Scrucca , Adrian E. Raftery

This article introduces the Python package gcimpute for missing data imputation. gcimpute can impute missing data with many different variable types, including continuous, binary, ordinal, count, and truncated values, by modeling data as…

统计方法学 · 统计学 2022-03-11 Yuxuan Zhao , Madeleine Udell

Synthetic data is essential for assessing clustering techniques, complementing and extending real data, and allowing for more complete coverage of a given problem's space. In turn, synthetic data generators have the potential of creating…

机器学习 · 计算机科学 2024-03-06 Nuno Fachada , Diogo de Andrade

This paper describes HyperStream, a large-scale, flexible and robust software package, written in the Python language, for processing streaming data with workflow creation capabilities. HyperStream overcomes the limitations of other…

机器学习 · 计算机科学 2019-08-09 Tom Diethe , Meelis Kull , Niall Twomey , Kacper Sokol , Hao Song , Miquel Perello-Nieto , Emma Tonkin , Peter Flach

Data cleaning is a crucial part of every data analysis exercise. Yet, the currently available R packages do not provide fast and robust methods for cleaning and preparation of time series data. The open source package tsrobprep introduces…

机器学习 · 统计学 2021-10-12 Michał Narajewski , Jens Kley-Holsteg , Florian Ziel

This article introduces Unsub Extender, a free tool to help libraries analyze their Unsub data export files. Unsub is a collection development dashboard that gathers and forecasts journal-level usage metrics to provide academic libraries…

数字图书馆 · 计算机科学 2022-10-26 Eric Schares

collapse is a large C/C++-based infrastructure package facilitating complex statistical computing, data transformation, and exploration tasks in R - at outstanding levels of performance and memory efficiency. It also implements a…

统计计算 · 统计学 2025-06-02 Sebastian Krantz

The exponential growth of complex data demands fully automatic clustering. Gaussian mixture models (GMMs) provide uncertainty-aware grouping but often require expertise to specify hyperparameters, e.g., component count and covariance…

机器学习 · 计算机科学 2025-09-10 Tingshan Liu , Thomas L. Athey , Benjamin D. Pedigo , Joshua T. Vogelstein

Motivation: Novel machine learning and statistical modeling studies rely on standardized comparisons to existing methods using well-studied benchmark datasets. Few tools exist that provide rapid access to many of these datasets through a…

Survival analysis, a foundational tool for modeling time-to-event data, has seen growing integration with machine learning (ML) approaches to handle the complexities of censored data and time-varying risks. Despite these advances,…

定量方法 · 定量生物学 2025-02-05 Giovanni Birolo , Ivan Rossi , Flavio Sartori , Cesare Rollo , Tiziana Sanavia , Piero Fariselli

Micro-panel data are collected and analysed in many research and industry areas. Cluster analysis of micro-panel data is an unsupervised learning exploratory method identifying subgroup clusters in a data set which include homogeneous…

机器学习 · 统计学 2018-07-17 Lukas Sobisek , Maria Stachova , Jan Fojtik

Data clustering is a common unsupervised learning method frequently used in exploratory data analysis. However, identifying relevant structures in unlabeled, high-dimensional data is nontrivial, requiring iterative experimentation with…

人机交互 · 计算机科学 2018-11-29 Marco Cavallo , Çağatay Demiralp

Data-based classification is fundamental to most branches of science. While recent years have brought enormous progress in various areas of statistical computing and clustering, some general challenges in clustering remain: model selection,…

人工智能 · 计算机科学 2007-06-13 Jens Oehlschlägel

Data is the driving force of machine learning, with the amount and quality of training data often being more important for the performance of a system than architecture and training details. But collecting, processing and annotating real…