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  1. Article

    Open Access

    Decentralized multi-agent cooperation via adaptive partner modeling

    Multi-agent reinforcement learning encounters a non-stationary challenge, where agents concurrently update their policies, leading to changes in the environment. Existing approaches have tackled this challenge...

    Chenhang Xu, Jia Wang, **aohui Zhu, Yong Yue, Weifeng Zhou in Complex & Intelligent Systems (2024)

  2. No Access

    Article

    Long-term ultra-precision phase synchronization technique for locking the repetition rate of OFCs based on FLOM-PD

    Long-term ultra-precision synchronization between optical frequency combs (OFCs) and microwave oscillators is important for various fields, including scientific observation, smart grid, positioning and navigat...

    Weifeng Zhou, Shijie Hao, **ng Chen, Wanpeng Zhang, Zongjie Yue in Optoelectronics Letters (2022)

  3. No Access

    Chapter and Conference Paper

    Similarities and Differences of Oceanic Primary Productivity Product Estimated by Three Models Based on MODIS for the Open South China Sea

    It’s critical to carry out comparison among remotely sensed data products and choose appropriate oceanic primary productivity product to apply to evaluation of fishery resources, ocean carbon cycle and global ...

    Hongyun Xu, Weifeng Zhou, Anzhou Li, Shijian Ji in Geo-Spatial Knowledge and Intelligence (2017)

  4. No Access

    Chapter and Conference Paper

    Estimation of Fishing Vessel Numbers Close to the Terminator in the Pacific Northwest Using OLS/DMSP Data

    Squid (Ommastrephes bartramii) is a kind of economic fishery resources. Artificial light at night attracts and aggregates fish and squid because it mimics light produced by bioluminescent marine animals. The fish...

    Tianfei Cheng, Weifeng Zhou, Hongyun Xu, Wei Fan in Geo-Spatial Knowledge and Intelligence (2017)

  5. Article

    Open Access

    Adaptive tight frame based multiplicative noise removal

    Sparse approximation has shown to be a significant tool in improving image restoration quality, assuming that the targeted images can be approximately sparse under some transform operators. However, it is impo...

    Weifeng Zhou, Shuguo Yang, Caiming Zhang, Shujun Fu in SpringerPlus (2016)

  6. No Access

    Chapter and Conference Paper

    The Fishing Ground Analysis and Forecasting Information System for Chinese Oceanic Fisheries

    Chinese oceanic fisheries have already covered seven main ocean area, including East Pacific, West Pacific, Middle Atlantic, North Pacific, Southeast Pacific, Southwest Atlantic and Indian Ocean. Based on the ...

    Weifeng Zhou, Xuezhong Chen, Xuesen Cui in Geo-Informatics in Resource Management and… (2016)

  7. No Access

    Chapter and Conference Paper

    Algorithm of Trawler Fishing Effort Extraction Based on BeiDou Vessel Monitoring System Data

    Performing statistical computations for traditional fishing effort takes much time and effort, and the macro fishing effort cannot be accessed immediately. Through the Beidou satellite vessel position monitori...

    Shengmao Zhang, Bailang Yu, Qiaoling Zheng in Geo-Informatics in Resource Management and… (2016)

  8. No Access

    Chapter and Conference Paper

    A New Index Model NDVI-MNDWI for Water Object Extraction in Hybrid Area

    Extracting accurate water boundary plays a critical role in oceanography research. In this study, we tested several water extraction methods using CCD and IRS images from satellites HJ-1A and HJ-1B in Liaodong...

    Weifeng Zhou, Zhanqiang Li, Shijian Ji in Geo-Informatics in Resource Management and… (2015)

  9. No Access

    Article

    Prime, irreducible elements and coatoms in posets

    In this paper, some properties of prime elements, pseudoprime elements, irreducible elements and coatoms in posets are investigated. We show that the four kinds of elements are equivalent to each other in fini...

    Weifeng Zhou, Qingguo Li, Lankun Guo in Mathematica Slovaca (2013)