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Bibliographic Details
Main Authors:	Yang, Shunpeng, Liu, Ben, Chen, Hua
Format:	Preprint
Published:	2026
Subjects:	Machine Learning Robotics
Online Access:	https://arxiv.org/abs/2602.01156
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FlowQ: Energy-Guided Flow Policies for Offline Reinforcement Learning
by: Alles, Marvin, et al.
Published: (2025)

ReinFlow: Fine-tuning Flow Matching Policy with Online Reinforcement Learning
by: Zhang, Tonghe, et al.
Published: (2025)

FocalPolicy: Frequency-Optimized Chunking and Locally Anchored Flow Matching for Coherent Visuomotor Policy
by: He, Qian, et al.
Published: (2026)

Design of Restricted Normalizing Flow towards Arbitrary Stochastic Policy with Computational Efficiency
by: Kobayashi, Taisuke, et al.
Published: (2024)

SAC Flow: Sample-Efficient Reinforcement Learning of Flow-Based Policies via Velocity-Reparameterized Sequential Modeling
by: Zhang, Yixian, et al.
Published: (2025)

Reinforcement Fine-Tuning of Flow-Matching Policies for Vision-Language-Action Models
by: Lyu, Mingyang, et al.
Published: (2025)

Flow Matching Policy Gradients
by: McAllister, David, et al.
Published: (2025)

Translating Flow to Policy via Hindsight Online Imitation
by: Zheng, Yitian, et al.
Published: (2025)

Riemannian Flow Matching Policy for Robot Motion Learning
by: Braun, Max, et al.
Published: (2024)

Latent Policy Steering through One-Step Flow Policies
by: Im, Hokyun, et al.
Published: (2026)

SeFA-Policy: Fast and Accurate Visuomotor Policy Learning with Selective Flow Alignment
by: Xue, Rong, et al.
Published: (2025)

SERNF: Sample-Efficient Real-World Dexterous Policy Fine-Tuning via Action-Chunked Critics and Normalizing Flows
by: Yang, Chenyu, et al.
Published: (2026)

Composite Gaussian Processes Flows for Learning Discontinuous Multimodal Policies
by: Wang, Shu-yuan, et al.
Published: (2025)

FlowCorrect: Efficient Interactive Correction of Generative Flow Policies for Robotic Manipulation
by: Welte, Edgar, et al.
Published: (2026)

Flow-Based Single-Step Completion for Efficient and Expressive Policy Learning
by: Koirala, Prajwal, et al.
Published: (2025)

Fast and Robust Visuomotor Riemannian Flow Matching Policy
by: Ding, Haoran, et al.
Published: (2024)

Diffusion Policies with Value-Conditional Optimization for Offline Reinforcement Learning
by: Ma, Yunchang, et al.
Published: (2025)

Data-Efficient Hierarchical Goal-Conditioned Reinforcement Learning via Normalizing Flows
by: Garg, Shaswat, et al.
Published: (2026)

Flow with the Force Field: Learning 3D Compliant Flow Matching Policies from Force and Demonstration-Guided Simulation Data
by: Li, Tianyu, et al.
Published: (2025)

Diffusion Policy Policy Optimization
by: Ren, Allen Z., et al.
Published: (2024)

Fisher Decorator: Refining Flow Policy via a Local Transport Map
by: Cheng, Xiaoyuan, et al.
Published: (2026)

FLAG: Flow Policy MaxEnt-RL by Latent Augmented Guidance
by: Kim, Sungha, et al.
Published: (2026)

EfficientFlow: Efficient Equivariant Flow Policy Learning for Embodied AI
by: Chang, Jianlei, et al.
Published: (2025)

VFP: Variational Flow-Matching Policy for Multi-Modal Robot Manipulation
by: Zhai, Xuanran, et al.
Published: (2025)

Enhancing Sample Efficiency and Exploration in Reinforcement Learning through the Integration of Diffusion Models and Proximal Policy Optimization
by: Gao, Tianci, et al.
Published: (2024)

Uni-O4: Unifying Online and Offline Deep Reinforcement Learning with Multi-Step On-Policy Optimization
by: Lei, Kun, et al.
Published: (2023)

State-wise Constrained Policy Optimization
by: Zhao, Weiye, et al.
Published: (2023)

Real-Time Execution of Action Chunking Flow Policies
by: Black, Kevin, et al.
Published: (2025)

NFPO: Stabilized Policy Optimization of Normalizing Flow for Robotic Policy Learning
by: Shi, Diyuan, et al.
Published: (2026)

Dichotomous Diffusion Policy Optimization
by: Liang, Ruiming, et al.
Published: (2025)

LearningFlow: Automated Policy Learning Workflow for Urban Driving with Large Language Models
by: Peng, Zengqi, et al.
Published: (2025)

Drifting Field Policy: A One-Step Generative Policy via Wasserstein Gradient Flow
by: Koo, Juil, et al.
Published: (2026)

Absolute Policy Optimization
by: Zhao, Weiye, et al.
Published: (2023)

Compose Your Policies! Improving Diffusion-based or Flow-based Robot Policies via Test-time Distribution-level Composition
by: Cao, Jiahang, et al.
Published: (2025)

Adaptive Advantage-Guided Policy Regularization for Offline Reinforcement Learning
by: Liu, Tenglong, et al.
Published: (2024)

FlowRetrieval: Flow-Guided Data Retrieval for Few-Shot Imitation Learning
by: Lin, Li-Heng, et al.
Published: (2024)

DRARL: Disengagement-Reason-Augmented Reinforcement Learning for Efficient Improvement of Autonomous Driving Policy
by: Zhou, Weitao, et al.
Published: (2025)

WarmPrior: Straightening Flow-Matching Policies with Temporal Priors
by: Kang, Sinjae, et al.
Published: (2026)

Spectral Normalization for Lipschitz-Constrained Policies on Learning Humanoid Locomotion
by: Shin, Jaeyong, 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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