Improved approximation and visualization of the correlation matrix

Fuente: arXiv

Guardado en:

Detalles Bibliográficos
Autores principales:	Graffelman, Jan, de Leeuw, Jan
Formato:	Preprint
Publicado:	2022
Materias:	Computation 62H25, 62-08
Acceso en línea:	Acceder al recurso
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

Ejemplares similares

On the approximation of the between-set correlation matrix by canonical correlation analysis
por: Graffelman, Jan
Publicado: (2026)

On the visualisation of the correlation matrix
por: Graffelman, Jan
Publicado: (2024)

Beyond the Trade-off Curve: Multivariate and Advanced Risk-Utility Maps for Evaluating Anonymized and Synthetic Data
por: Thees, Oscar, et al.
Publicado: (2025)

Convergence of SMACOF
por: De Leeuw, Jan
Publicado: (2024)

Global Minima by Penalized Full-dimensional Scaling
por: de Leeuw, Jan
Publicado: (2024)

Higher Partials of fStress
por: de Leeuw, Jan
Publicado: (2024)

Structure-Preserving Nonlinear Sufficient Dimension Reduction for Tensors
por: Lin, Dianjun, et al.
Publicado: (2025)

On exact computation of Tukey depth central regions
por: Fojtík, Vít, et al.
Publicado: (2022)

Latent Variable Modelling by Supervised Diffusion
por: Bargman, Daniil
Publicado: (2025)

Statistical exploration of the Manifold Hypothesis
por: Whiteley, Nick, et al.
Publicado: (2022)

Comparative Judgement Modeling to Map Forced Marriage at Local Levels
por: Seymour, R. G., et al.
Publicado: (2022)

A novel CFA+EFA model to detect aberrant respondents
por: Cao, Niccolò, et al.
Publicado: (2023)

Structural Health Monitoring with Functional Data: Two Case Studies
por: Wittenberg, Philipp, et al.
Publicado: (2024)

Asymptotic confidence bands for the histogram regression estimator
por: Neumeyer, Natalie, et al.
Publicado: (2025)

Majorizing Stress Formula Two
por: de Leeuw, Jan
Publicado: (2024)

The tail wags the distribution: Only sample the tails for efficient reliability analysis
por: Chakroborty, Promit, et al.
Publicado: (2025)

Asymptotic confidence bands for centered purely random forests
por: Neumeyer, Natalie, et al.
Publicado: (2025)

Uniform error bound for PCA matrix denoising
por: Tong, Xin T., et al.
Publicado: (2023)

Copula Modelling of Serially Correlated Multivariate Data with Hidden Structures
por: Zimmerman, Robert, et al.
Publicado: (2022)

Continuum centroid classifier for functional data
por: Zhou, Zhiyang, et al.
Publicado: (2021)

Bayesianize Fuzziness in the Statistical Analysis of Fuzzy Data
por: Calcagnì, Antonio, et al.
Publicado: (2025)

Semiparametric copula-based quantile regression for semicontinuous outcomes with application to healthcare data
por: Lyu, Guanjie, et al.
Publicado: (2026)

Estimation of a Likelihood Ratio Ordered Family of Distributions
por: Mösching, Alexandre, et al.
Publicado: (2020)

On spectral clustering under non-isotropic Gaussian mixture models
por: Kawamoto, Kohei, et al.
Publicado: (2026)

Covariance Expressions for Multi-Fidelity Sampling with Multi-Output, Multi-Statistic Estimators: Application to Approximate Control Variates
por: Dixon, Thomas O., et al.
Publicado: (2023)

Binary Trees and Taxicab Correspondence Analysis of Extremely Sparse Binary Textual Data: A Case Study
por: Choulakian, Vartan, et al.
Publicado: (2024)

Scale Invariant Correspondence Analysis
por: Choulakian, Vartan
Publicado: (2023)

Reduced-Rank Autoregressive Model for High-Dimensional Multivariate Network Time Series
por: Lyu, Qi, et al.
Publicado: (2026)

Shrinkage for Extreme Partial Least-Squares
por: Arbel, Julyan, et al.
Publicado: (2024)

Derandomized Truncated D-vine Copula Knockoffs with e-values to control the false discovery rate
por: Vásquez, Alejandro Román, et al.
Publicado: (2024)

Additive Logistic Models as Interpretable Likelihood-Ratio Scores for AUC-Based Classification
por: Chang, Yuan-chin Ivan
Publicado: (2015)

Covariance-free Bi-fidelity Control Variates Importance Sampling for Rare Event Reliability Analysis
por: Chakroborty, Promit, et al.
Publicado: (2024)

Bi-dendrograms for clustering the categories of a multivariate categorical data set
por: Greenacre, Michael, et al.
Publicado: (2025)

Multiple Imputation Methods under Extreme Values
por: Brasil, Enzo Porto
Publicado: (2026)

Controlling the False Discovery Rate in Subspace Selection
por: Díaz, Mateo, et al.
Publicado: (2024)

Multivariate Functional Principal Component Analysis for Mixed-Type mHealth Data: An Application to Mood Disorders
por: Dey, Debangan, et al.
Publicado: (2026)

Sparse canonical correlation analysis for multiple measurements with latent trajectories
por: Senar, Nuria, et al.
Publicado: (2025)

Sparse PCA: Phase Transitions in the Critical Regime
por: Feldman, Michael J., et al.
Publicado: (2024)

Projections in L2 and L1 normed spaces and SVDs
por: Choulakian, Vartan
Publicado: (2024)

Extreme value theory for singular subspace estimation in the matrix denoising model
por: Chang, Junhyung, et al.
Publicado: (2025)

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

Environment & details:

GET Data empty

POST Data empty

Files empty

Key	Value
ui	"standard"
VUFIND_SESSION	"483cdd3c7beb746b0e55297779baedcc"
language	"es"

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1790979574.6827 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "483cdd3c7beb746b0e55297779baedcc" ]`]
SessionState	Laminas\Stdlib\ArrayObject {#938}
FlashMessenger	Laminas\Stdlib\ArrayObject {#1433}
SessionHelper	Laminas\Stdlib\ArrayObject {#1759}

Server/Request Data

Key	Value
REDIRECT_VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
REDIRECT_HTTPS	"on"
REDIRECT_SSL_TLS_SNI	"info.umar.mx"
REDIRECT_STATUS	"200"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTPS	"on"
SSL_TLS_SNI	"info.umar.mx"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE	"ui=standard; VUFIND_SESSION=483cdd3c7beb746b0e55297779baedcc; language=es"
HTTP_ACCEPT_ENCODING	"gzip, br, zstd, deflate"
HTTP_HOST	"info.umar.mx"
PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
SERVER_SIGNATURE	"<address>Apache/2.4.66 (Ubuntu) Server at info.umar.mx Port 443</address>\n"
SERVER_SOFTWARE	"Apache/2.4.66 (Ubuntu)"
SERVER_NAME	"info.umar.mx"
SERVER_ADDR	"200.23.222.19"
SERVER_PORT	"443"
REMOTE_ADDR	"216.73.217.142"
DOCUMENT_ROOT	"/usr/local/vufind/public"
REQUEST_SCHEME	"https"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"admin@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"10106"
REDIRECT_URL	""" /Record/\n arxiv_https___arxiv_org_abs_2211_13150/Similar """
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/%0Aarxiv_https___arxiv_org_abs_2211_13150/Similar"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1790979574.6781
REQUEST_TIME	1790979574

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler