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Bibliographic Details
Main Authors:	Sun, Ruotong, Wei, Ermin
Format:	Preprint
Published:	2026
Subjects:	Machine Learning Artificial Intelligence
Online Access:	https://arxiv.org/abs/2605.06316
Tags:	Add Tag No Tags, Be the first to tag this record!

In-Context Reward Adaptation for Robust Preference Modeling
by: Sun, Zhenyu, et al.
Published: (2026)

SOAP: Improving and Stabilizing Shampoo using Adam
by: Vyas, Nikhil, et al.
Published: (2024)

4-bit Shampoo for Memory-Efficient Network Training
by: Wang, Sike, et al.
Published: (2024)

Clarifying Shampoo: Adapting Spectral Descent to Stochasticity and the Parameter Trajectory
by: Eschenhagen, Runa, et al.
Published: (2026)

Data Whitening Improves Sparse Autoencoder Learning
by: Saraswatula, Ashwin, et al.
Published: (2025)

Orthogonalized Policy Optimization:Policy Optimization as Orthogonal Projection in Hilbert Space
by: Zixian, Wang
Published: (2026)

Whitening Not Recommended for Classification Tasks in LLMs
by: Forooghi, Ali, et al.
Published: (2024)

Hessian-Free Online Certified Unlearning
by: Qiao, Xinbao, et al.
Published: (2024)

SWAN: SGD with Normalization and Whitening Enables Stateless LLM Training
by: Ma, Chao, et al.
Published: (2024)

Group Orthogonalized Policy Optimization:Group Policy Optimization as Orthogonal Projection in Hilbert Space
by: Zixian, Wang
Published: (2026)

Reservoir Subspace Injection for Online ICA under Top-n Whitening
by: Xiao, Wenjun, et al.
Published: (2026)

FOAM: Frequency and Operator Error-Based Adaptive Damping Method for Reducing Staleness-Oriented Error for Shampoo
by: Nam, Kyunghun, et al.
Published: (2026)

Fisher-Orthogonal Projected Natural Gradient Descent for Continual Learning
by: Garg, Ishir, et al.
Published: (2026)

Revisiting Weak-to-Strong Generalization in Theory and Practice: Reverse KL vs. Forward KL
by: Yao, Wei, et al.
Published: (2025)

Orthogonal Subspace Projection for Continual Machine Unlearning via SVD-Based LoRA
by: Rahulamathavan, Yogachandran, et al.
Published: (2026)

Approximated Orthogonal Projection Unit: Stabilizing Regression Network Training Using Natural Gradient
by: Wang, Shaoqi, et al.
Published: (2024)

Beyond the Mean: Fisher-Orthogonal Projection for Natural Gradient Descent in Large Batch Training
by: Lu, Yishun, et al.
Published: (2025)

Reference-Sampled Boltzmann Projection for KL-Regularized RLVR: Target-Matched Weighted SFT, Finite One-Shot Gaps, and Policy Mirror Descent
by: Shu, Yao, et al.
Published: (2026)

Integration of Mamba and Transformer -- MAT for Long-Short Range Time Series Forecasting with Application to Weather Dynamics
by: Zhang, Wenqing, et al.
Published: (2024)

GoQuant: Geometric Orthogonal Residual Projection for Multiplier-Free Power-of-Two Transformer Quantization
by: Xiang, Maoyang, et al.
Published: (2026)

Deep Orthogonal Hypersphere Compression for Anomaly Detection
by: Zhang, Yunhe, et al.
Published: (2023)

MatryoshkaKV: Adaptive KV Compression via Trainable Orthogonal Projection
by: Lin, Bokai, et al.
Published: (2024)

Multiplicative Orthogonal Sequential Editing for Language Models
by: Xu, Hao-Xiang, et al.
Published: (2026)

Pre-training with Random Orthogonal Projection Image Modeling
by: Haghighat, Maryam, et al.
Published: (2023)

Preventing Dimensional Collapse in Self-Supervised Learning via Orthogonality Regularization
by: He, Junlin, et al.
Published: (2024)

Diverse Policies Recovering via Pointwise Mutual Information Weighted Imitation Learning
by: Yang, Hanlin, et al.
Published: (2024)

ROOT: Robust Orthogonalized Optimizer for Neural Network Training
by: He, Wei, et al.
Published: (2025)

Disentangling Task Conflicts in Multi-Task LoRA via Orthogonal Gradient Projection
by: Yang, Ziyu, et al.
Published: (2026)

Recovering implicit physics model under real-world constraints
by: Banerjee, Ayan, et al.
Published: (2024)

Hebbian Learning based Orthogonal Projection for Continual Learning of Spiking Neural Networks
by: Xiao, Mingqing, et al.
Published: (2024)

Scalable Heterogeneous Graph Learning via Heterogeneous-aware Orthogonal Prototype Experts
by: Zhou, Wei, et al.
Published: (2026)

KL for a KL: On-Policy Distillation with Control Variate Baseline
by: Oh, Minjae, et al.
Published: (2026)

Bidirectional Soft Actor-Critic: Leveraging Forward and Reverse KL Divergence for Efficient Reinforcement Learning
by: Zhang, Yixian, et al.
Published: (2025)

Recovering from Biased Data: Can Fairness Constraints Improve Accuracy?
by: Blum, Avrim, et al.
Published: (2019)

Towards the Transferability of Rewards Recovered via Regularized Inverse Reinforcement Learning
by: Schlaginhaufen, Andreas, et al.
Published: (2024)

Privacy-Aware Video Anomaly Detection through Orthogonal Subspace Projection
by: Wang, Lei, et al.
Published: (2026)

ORTHOBO: Orthogonal Bayesian Hyperparameter Optimization
by: Schröder, Maresa, et al.
Published: (2026)

Measuring Orthogonality in Representations of Generative Models
by: Geyer, Robin C., et al.
Published: (2024)

ONG: Orthogonal Natural Gradient Descent
by: Yadav, Yajat, et al.
Published: (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'

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