Video reasoning segmentation (VRS) endeavors to delineate referred objects in videos guided by implicit instructions that encapsulate human intent and temporal logic. Previous approaches leverage large vision language models (LVLMs) to encode object semantics into tokens for mask prediction. However, this paradigm suffers from limited interpretability during inference and suboptimal performance due to inadequate spatiotemporal reasoning. Drawing inspiration from seminal breakthroughs in reinforcement learning, we introduce Veason-R1, a specialized LVLM for VRS that emphasizes structured reasoning in segmentation. Veason-R1 is trained through Group Relative Policy Optimization (GRPO) augmented with Chain-of-Thought (CoT) initialization. To begin with, we curate high-quality CoT training data to instill structured reasoning trajectories, bridging video-level semantics and frame-level spatial grounding, yielding the supervised fine-tuned model Veason-SFT. Subsequently, GRPO fine-tuning encourages efficient exploration of the reasoning space by optimizing reasoning chains. To this end, we incorporate a holistic reward mechanism that synergistically enhances spatial alignment and temporal consistency, bolstering keyframe localization and fine-grained grounding. Comprehensive empirical evaluations demonstrate that Veason-R1 achieves state-of-the-art performance on multiple benchmarks, surpassing prior art by significant margins (e.g., +1.3 J F in ReVOS and +10.0 J F in ReasonVOS), while exhibiting robustness to hallucinations (+8.8 R). Our code and model weights will be available at Veason-R1.
This article analyses the structural composition of “Sharh al-Maqasid,” the largest work on the science of kalam (theology) by Saʻd al-Din al-Taftazani (722– 792/1322–1390), the most renowned scholar of the Hanafi-Maturidi school of the Timurid period, and his approach to the classification of doctrinal (aqida) issues. It shows that, in classifying purely doctrinal matters, al-Taftazani arranged them into six “aims” (maqsad) al-mabadi (the principles), al-umur al-amma (the general matters), al-aʻrad (accidents), al-jawahir (substances), al-ilahiyyat (theology) and al-samʻiyyat (the revealed matters) and compares this with the modern four-fold division of kalam. The article further examines how al-Taftazani distinguished doctrinal from juridical (fiqhi) issues, and demonstrates that the work is an important source not only for kalam and the history of the deviant sects but also for the exact and natural sciences.
This article examines the scientific activities of Sayyid Sharif Jurjani (1340–1413) during his residence in Samarkand under the patronage of Amir Timur and analyzes his contribution to the intellectual development of the Timurid era. The study highlights Amir Timur’s policy of gathering distinguished scholars from different regions of the Islamic world and transforming Samarkand into a major center of learning. Special attention is given to Jurjani’s arrival in Samarkand, his scholarly relationship with Amir Timur, and his famous intellectual debates with Sa'duddin Taftazani, which significantly influenced the development of Islamic theology, logic, and philosophy. The article also explores Jurjani’s role as a leading teacher in Timurid madrasas and examines the influence he exerted on a generation of prominent scholars, including Qadizada Rumi, Fathullah Shirvani, Ibn Arabshah, and others. Furthermore, the research discusses the dissemination of Jurjani’s works throughout the Islamic world and their enduring place in the educational curriculum of madrasas. The findings demonstrate that Jurjani’s nearly two decades of scholarly activity in Samarkand played a crucial role in strengthening the city’s status as a center of theoretical sciences and contributed significantly to the intellectual legacy of the Timurid Renaissance.
This article provides a comprehensive analysis of the theoretical foundations, legal mechanisms, and contemporary challenges related to a child’s right to lineage in Islamic law. It examines the concept of lineage from an Islamic perspective and highlights its significance in the Qur’an and Sunnah. Particular attention is given to the role of lineage in shaping personal identity and maintaining social stability.The study further analyzes key Islamic legal mechanisms designed to protect lineage, including marriage, li‘an (mutual imprecation), iddah (waiting period), denial of lineage, and adoption. In addition, through a textual analysis of primary Islamic sources, the article explores the legal importance of lineage and its relevance in contemporary society.
This article analyzes the process of the development of the science of fiqh (Islamic jurisprudence) in Movarounnahr (Transoxiana) in the 13th–14th centuries, its principal features, and its scholarly environment. It shows that, despite the political changes in the region during this period, the juridical traditions continued consistently. The scholarly legacy of the jurists (faqihs) is illuminated, and the contribution of the local scholars (ulama) to the development of the science of fiqh in Movarounnahr is analyzed.
