13,582 research outputs found
Flavor Structure of the Nucleon Sea
We review the current status and future prospects on the subject of flavor
structure of the nucleon sea. The flavor structure of the nucleon sea provides
unique information on the non-perturbative aspects of strong interactions
allowing stringent tests of various models on the partonic structures of the
nucleons as well as lattice QCD calculations. The scope of this review covers
the unpolarized, polarized, and the transverse-momentum dependent sea-quark
distributions of the nucleons. While the main focus of this review is on the
physics motivation and recent progress on the subject of the nucleon sea, we
also discuss future prospects of addressing some outstanding issues on the
flavor structure of the nucleon sea.Comment: 61 pages and 36 figures; published versio
CANF-VC++: Enhancing Conditional Augmented Normalizing Flows for Video Compression with Advanced Techniques
Video has become the predominant medium for information dissemination,
driving the need for efficient video codecs. Recent advancements in learned
video compression have shown promising results, surpassing traditional codecs
in terms of coding efficiency. However, challenges remain in integrating
fragmented techniques and incorporating new tools into existing codecs. In this
paper, we comprehensively review the state-of-the-art CANF-VC codec and propose
CANF-VC++, an enhanced version that addresses these challenges. We
systematically explore architecture design, reference frame type, training
procedure, and entropy coding efficiency, leading to substantial coding
improvements. CANF-VC++ achieves significant Bj{\o}ntegaard-Delta rate savings
on conventional datasets UVG, HEVC Class B and MCL-JCV, outperforming the
baseline CANF-VC and even the H.266 reference software VTM. Our work
demonstrates the potential of integrating advancements in video compression and
serves as inspiration for future research in the field
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