Catching a Moving Subspace: Low-Rank Bandits Beyond Stationarity

Fuente: arXiv

Guardado en:

Detalles Bibliográficos
Autores principales:	Khosravi, Hamed, Huo, Xiaoming
Formato:	Preprint
Publicado:	2026
Materias:	Machine Learning Artificial Intelligence
Acceso en línea:	Acceder al recurso
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

Ejemplares similares

Conformal Selective Acting: Anytime-Valid Risk Control for RLVR-Trained LLMs
por: Khosravi, Hamed, et al.
Publicado: (2026)

Mixture-of-Subspaces in Low-Rank Adaptation
por: Wu, Taiqiang, et al.
Publicado: (2024)

LNUCB-TA: Linear-nonlinear Hybrid Bandit Learning with Temporal Attention
por: Khosravi, Hamed, et al.
Publicado: (2025)

Lotus: Efficient LLM Training by Randomized Low-Rank Gradient Projection with Adaptive Subspace Switching
por: Miao, Tianhao, et al.
Publicado: (2026)

FFT-based Dynamic Subspace Selection for Low-Rank Adaptive Optimization of Large Language Models
por: Modoranu, Ionut-Vlad, et al.
Publicado: (2025)

Low-Rank Compression of Pretrained Models via Randomized Subspace Iteration
por: Pourkamali-Anaraki, Farhad
Publicado: (2026)

Interpretable Safety Alignment via SAE-Constructed Low-Rank Subspace Adaptation
por: Wang, Dianyun, et al.
Publicado: (2025)

Towards Domain Adaptive Neural Contextual Bandits
por: Wang, Ziyan, et al.
Publicado: (2024)

Neural Active Learning Beyond Bandits
por: Ban, Yikun, et al.
Publicado: (2024)

Preferences Evolve And So Should Your Bandits: Bandits with Evolving States for Online Platforms
por: Khosravi, Khashayar, et al.
Publicado: (2023)

CoRA: Optimizing Low-Rank Adaptation with Common Subspace of Large Language Models
por: Xiao, Xiaojun, et al.
Publicado: (2024)

Conservative Contextual Bandits: Beyond Linear Representations
por: Deb, Rohan, et al.
Publicado: (2024)

Machine Unlearning in Low-Dimensional Feature Subspace
por: Fang, Kun, et al.
Publicado: (2026)

Binary Gaussian Copula Synthesis: A Novel Data Augmentation Technique to Advance ML-based Clinical Decision Support Systems for Early Prediction of Dialysis Among CKD Patients
por: Khosravi, Hamed, et al.
Publicado: (2024)

Non-Stationarity in the Embedding Space of Time Series Foundation Models
por: Choi, Jinmyeong, et al.
Publicado: (2026)

Offline Reinforcement Learning from Datasets with Structured Non-Stationarity
por: Ackermann, Johannes, et al.
Publicado: (2024)

Off-Policy Evaluation and Learning for the Future under Non-Stationarity
por: Shimizu, Tatsuhiro, et al.
Publicado: (2025)

TwinS: Revisiting Non-Stationarity in Multivariate Time Series Forecasting
por: Hu, Jiaxi, et al.
Publicado: (2024)

Scalable Bayesian Low-Rank Adaptation of Large Language Models via Stochastic Variational Subspace Inference
por: Samplawski, Colin, et al.
Publicado: (2025)

Beyond Factor Aggregation: Gauge-Aware Low-Rank Server Representations for Federated LoRA
por: Chen, Jinqian, et al.
Publicado: (2026)

PageRank Bandits for Link Prediction
por: Ban, Yikun, et al.
Publicado: (2024)

Adaptive World Models: Learning Behaviors by Latent Imagination Under Non-Stationarity
por: Gospodinov, Emiliyan, et al.
Publicado: (2024)

Robust Subspace-Constrained Quadratic Models for Low-Dimensional Structure Learning
por: Zhai, Zheng, et al.
Publicado: (2026)

Beyond Variance: Knowledge-Aware LLM Compression via Fisher-Aligned Subspace Diagnostics
por: Shihab, Ibne Farabi, et al.
Publicado: (2026)

SRLoRA: Subspace Recomposition in Low-Rank Adaptation via Importance-Based Fusion and Reinitialization
por: Yang, Haodong, et al.
Publicado: (2025)

TimeAPN: Adaptive Amplitude-Phase Non-Stationarity Normalization for Time Series Forecasting
por: Hu, Yue, et al.
Publicado: (2026)

TIFO: Time-Invariant Frequency Operator for Stationarity-Aware Representation Learning in Time Series
por: Piao, Xihao, et al.
Publicado: (2026)

Be Bayesian by Attachments to Catch More Uncertainty
por: Shen, Shiyu, et al.
Publicado: (2023)

AI for Anticipatory Action: Moving Beyond Climate Forecasting
por: Huynh, Benjamin Q., et al.
Publicado: (2023)

Low-Rank Compression of Language Models via Differentiable Rank Selection
por: Sundrani, Sidhant, et al.
Publicado: (2025)

Beyond Perplexity: A Geometric and Spectral Study of Low-Rank Pre-Training
por: Shivagunde, Namrata, et al.
Publicado: (2026)

Towards Symmetric Low-Rank Adapters
por: Panoutsos, Tales, et al.
Publicado: (2025)

The Primacy of Magnitude in Low-Rank Adaptation
por: Zhang, Zicheng, et al.
Publicado: (2025)

Beyond the Lower Bound: Bridging Regret Minimization and Best Arm Identification in Lexicographic Bandits
por: Xue, Bo, et al.
Publicado: (2025)

Global Low-Rank, Local Full-Rank: The Holographic Encoding of Learned Algorithms
por: Xu, Yongzhong
Publicado: (2026)

Multi-Step Knowledge Interaction Analysis via Rank-2 Subspace Disentanglement
por: Islam, Sekh Mainul, et al.
Publicado: (2025)

Probe-Free Low-Rank Activation Intervention
por: Jiang, Chonghe, et al.
Publicado: (2025)

Low-Rank MDPs with Continuous Action Spaces
por: Bennett, Andrew, et al.
Publicado: (2023)

Low Rank Gradients and Where to Find Them
por: Sonthalia, Rishi, et al.
Publicado: (2025)

From Automation to Autonomy in Smart Manufacturing: A Bayesian Optimization Framework for Modeling Multi-Objective Experimentation and Sequential Decision Making
por: Asru, Avijit Saha, 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
language	"es"
ui	"standard"
VUFIND_SESSION	"6fecb7c15b412cf4353741a5ef93f8cf"

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1790846131.8604 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "6fecb7c15b412cf4353741a5ef93f8cf" ]`]
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	"language=es; ui=standard; VUFIND_SESSION=6fecb7c15b412cf4353741a5ef93f8cf"
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	"216.73.216.147"
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	"28639"
REDIRECT_URL	""" /Record/\n arxiv_https___arxiv_org_abs_2605_20269/Similar """
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/%0Aarxiv_https___arxiv_org_abs_2605_20269/Similar"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1790846131.8462
REQUEST_TIME	1790846131

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler