1,253 Hits in 1.7 sec

BViT: Broad Attention based Vision Transformer [article]

Nannan Li, Yaran Chen, Weifan Li, Zixiang Ding, Dongbin Zhao
2022 arXiv   pre-print
Li, Y. Chen, W. Li, Z. Ding and D.  ... 
arXiv:2202.06268v1 fatcat:kef3cztfkzbyrkb2lqzry2zwry

Learning Compact Reward for Image Captioning [article]

Nannan Li, Zhenzhong Chen
2020 arXiv   pre-print
However, due to the reward hacking problem, RL maximizes the reward in an unintended way and fails to produce human-like descriptions (Li et al., 2019a) .  ...  Although AIRL has been utilized to solve problems in other fields (Wang et al., 2018; Li et al., 2019b; Shi et al., 2018) , we are the first to make algorithmic improvements to AIRL such that the model  ... 
arXiv:2003.10925v1 fatcat:se65gwk7fvae3kfpo6jyxvvase

Combined Use of eDNA Metabarcoding and Bottom Trawling for the Assessment of Fish Biodiversity in the Zhoushan Sea

Shan Zhou, Shan Zhou, Shan Zhou, Chenrong Fan, Chenrong Fan, Chenrong Fan, Haoming Xia, Jian Zhang, Wei Yang, Wei Yang, Wei Yang, Dengjie Ji (+11 others)
2022 Frontiers in Marine Science  
With the increase in fishing intensity and the intensification of marine pollution, the fishery resources in the Zhoushan Sea are seriously degraded, and the difficulty of censusing fish diversity hampers effective management in marine fishes. Environmental DNA metabarcoding and bottom trawl methods were used to determine the ability of the methods to distinguish fish assemblages in the Zhoushan Sea. The species composition and diversity of the Zhoushan Sea were assessed via high-throughput
more » ... encing analysis of eDNA coupled with bottom trawl fishery survey data, after which the two methods were compared. eDNA screening identified 38.2% more fish species than bottom trawls. Combining these two methods, 33 orders, 65 families, and 130 species of fishes were identified. Perciformes and Clupeiformes, the most abundant orders in the catch, represented 31.5 and 10.0% of the total fish abundance, respectively. The results of ANOSIM and redundancy analyses indicated that the fish community structure varied significantly between summer and winter, however depth and temperature being the main environmental factors influencing fish distribution. The biodiversity index was higher in summer than in winter. Thus, our work provides more detailed seasonal data on biodiversity in the Zhoushan Sea, which is essential for the long-term management and conservation of coastal biodiversity. Compared with traditional survey methods, eDNA determination is highly sensitive, accurate, cost-efficient, and suitable for fish diversity studies in relevant sea areas. Although this approach cannot completely replace traditional methods, our findings demonstrate that it provides a reliable complementary method for assessing fish diversity in marine ecosystems.
doi:10.3389/fmars.2021.809703 doaj:b0b99ca415bf431da9d8cf9b86717247 fatcat:2j7p4k65ajaelcqh4jinngjclq

Predicate correlation learning for scene graph generation [article]

Leitian Tao, Li Mi, Nannan Li, Xianhang Cheng, Yaosi Hu, Zhenzhong Chen
2021 arXiv   pre-print
Based on the conclusion of , Li et al. (Li et al., 2020) enhanced samples of hard classes by group softmax.  ...  ., 2018b; Li et al., 2018; Mi and Chen, 2020; Xu et al., 2017; Ren et al., 2020; Hung et al., 2020; Guo et al., 2021 ) focused on better modeling the interactions among objects. Xu et al.  ... 
arXiv:2107.02713v1 fatcat:amxwiwrcn5fbrdy6bfxg6mmnpm

Heterogeneous image transformation

Nannan Wang, Jie Li, Dacheng Tao, Xuelong Li, Xinbo Gao
2013 Pattern Recognition Letters  
Li et al. (2006) extended the eigen-transform to a hybrid space consisting of sketch space and photo space.  ...  applications, there are diverse imaging modes and correspondingly different image modalities for different purpose, such as near infrared (NIR) image applied for illumination invariant face recognition (Li  ... 
doi:10.1016/j.patrec.2012.04.005 fatcat:vkqvusm2t5auxfzlbxqjgbvrnu

Multi-Margin based Decorrelation Learning for Heterogeneous Face Recognition [article]

Bing Cao, Nannan Wang, Xinbo Gao, Jie Li, Zhifeng Li
2020 arXiv   pre-print
Heterogeneous face recognition (HFR) refers to matching face images acquired from different domains with wide applications in security scenarios. This paper presents a deep neural network approach namely Multi-Margin based Decorrelation Learning (MMDL) to extract decorrelation representations in a hyperspherical space for cross-domain face images. The proposed framework can be divided into two components: heterogeneous representation network and decorrelation representation learning. First, we
more » ... mploy a large scale of accessible visual face images to train heterogeneous representation network. The decorrelation layer projects the output of the first component into decorrelation latent subspace and obtains decorrelation representation. In addition, we design a multi-margin loss (MML), which consists of quadruplet margin loss (QML) and heterogeneous angular margin loss (HAML), to constrain the proposed framework. Experimental results on two challenging heterogeneous face databases show that our approach achieves superior performance on both verification and recognition tasks, comparing with state-of-the-art methods.
arXiv:2005.11945v1 fatcat:hwdx23hbxrbmri3pfne5spmoyy

Facial Attribute Capsules for Noise Face Super Resolution [article]

Jingwei Xin, Nannan Wang, Xinrui Jiang, Jie Li, Xinbo Gao, Zhifeng Li
2020 arXiv   pre-print
Existing face super-resolution (SR) methods mainly assume the input image to be noise-free. Their performance degrades drastically when applied to real-world scenarios where the input image is always contaminated by noise. In this paper, we propose a Facial Attribute Capsules Network (FACN) to deal with the problem of high-scale super-resolution of noisy face image. Capsule is a group of neurons whose activity vector models different properties of the same entity. Inspired by the concept of
more » ... ule, we propose an integrated representation model of facial information, which named Facial Attribute Capsule (FAC). In the SR processing, we first generated a group of FACs from the input LR face, and then reconstructed the HR face from this group of FACs. Aiming to effectively improve the robustness of FAC to noise, we generate FAC in semantic, probabilistic and facial attributes manners by means of integrated learning strategy. Each FAC can be divided into two sub-capsules: Semantic Capsule (SC) and Probabilistic Capsule (PC). Them describe an explicit facial attribute in detail from two aspects of semantic representation and probability distribution. The group of FACs model an image as a combination of facial attribute information in the semantic space and probabilistic space by an attribute-disentangling way. The diverse FACs could better combine the face prior information to generate the face images with fine-grained semantic attributes. Extensive benchmark experiments show that our method achieves superior hallucination results and outperforms state-of-the-art for very low resolution (LR) noise face image super resolution.
arXiv:2002.06518v1 fatcat:zs6355bui5aqpfric55kmv5rry

Video Face Super-Resolution with Motion-Adaptive Feedback Cell [article]

Jingwei Xin, Nannan Wang, Jie Li, Xinbo Gao, Zhifeng Li
2020 arXiv   pre-print
Li [32] optimized the structure of 3D convolution and proposes a fast VSR method.  ... 
arXiv:2002.06378v1 fatcat:sf2ioi4sjzbppodz5723num53m

Searching Action Proposals via Spatial Actionness Estimation and Temporal Path Inference and Tracking [article]

Nannan Li, Dan Xu, Zhenqiang Ying, Zhihao Li, Ge Li
2016 arXiv   pre-print
n g F e n c in g R o p e C li m b in g Ic e D a n c in g W a lk in g W it h D o g F lo o rG y m n a s ti c s B ik in g H o rs e R id  ...  in g T ra m p o li n e J u m p in g S k a te B o a rd in g G o lf S w in g S a ls a S p in Table 1 . 1 Quantitative performance comparison of the action  ... 
arXiv:1608.06495v1 fatcat:dv6jnd2nq5gvzjdg74ewnbsqpa

Facial Feature Point Detection: A Comprehensive Survey [article]

Nannan Wang, Xinbo Gao, Dacheng Tao, Xuelong Li
2014 arXiv   pre-print
Li et al. (Li et al, 2009 , 2011 thus presented a robust shape model exploring random sample consensus (Fischler and Bolles, 1981) .  ...  better performance; (2) the generic shape model is far easier to build than the generic texture model; (3) the origin of the idea that fitting the generic AAM is far harder than the person specific AAM lies  ... 
arXiv:1410.1037v1 fatcat:ye2nza4tabdehpk6rr62cvwute

OH Evolution in Molecular Clouds [article]

Ningyu Tang, Di Li, Nannan Yue, Pei Zuo, Tie Liu, Gan Luo, Longfei Chen, Sheng-Li Qin, Yuefang Wu, Carl Heiles
2020 arXiv   pre-print
We adopted the same analysis method of cloud age in Goldsmith & Li (2005) .  ...  -Y., Zuo, P., Li, D., et al. 2020 Astronomy and Astrophysics, 20, 077 Tang, N., Li, D., Heiles, C., et al. 2017 , ApJ, 839, 8 Turner, B. E. 1973 , ApJ, 186, 357 Turner, B. E. & Heiles, C.  ... 
arXiv:2010.09264v1 fatcat:hvnhldgon5ahhlxxene56k2cme

Non-rigid 3D shape retrieval based on multi-view metric learning [article]

Haohao Li, Shengfa Wang, Nannan Li, Zhixun Su, Ximin Liu
2019 arXiv   pre-print
This study presents a novel multi-view metric learning algorithm, which aims to improve 3D non-rigid shape retrieval. With the development of non-rigid 3D shape analysis, there exist many shape descriptors. The intrinsic descriptors can be explored to construct various intrinsic representations for non-rigid 3D shape retrieval task. The different intrinsic representations (features) focus on different geometric properties to describe the same 3D shape, which makes the representations are
more » ... . Therefore, it is possible and necessary to learn multiple metrics for different representations jointly. We propose an effective multi-view metric learning algorithm by extending the Marginal Fisher Analysis (MFA) into the multi-view domain, and exploring Hilbert-Schmidt Independence Criteria (HSCI) as a diversity term to jointly learning the new metrics. The different classes can be separated by MFA in our method. Meanwhile, HSCI is exploited to make the multiple representations to be consensus. The learned metrics can reduce the redundancy between the multiple representations, and improve the accuracy of the retrieval results. Experiments are performed on SHREC'10 benchmarks, and the results show that the proposed method outperforms the state-of-the-art non-rigid 3D shape retrieval methods.
arXiv:1904.00765v1 fatcat:x6brnuwcgncvjdbddktporz6hm

Gene analysis of seven cases of primary immunodeficiency

Ying Zhu, Li Li, Guoshun Mao, Lei Zhang, Jing Wang, Nannan Li
2020 Translational Pediatrics  
Primary immune deficiency diseases (PID) are a group of potentially serious disorders in which inherited defects in the immune system lead to increased infections. This paper explores the clinical characteristics and pathogenic gene mutation of PID. The clinical data, clinical manifestations, and gene sequencing results of seven children were analyzed. Among the seven children, six were male, and one was female, aged from 4 months to 13 years old. All of them had a history of repeated infection
more » ... and pneumonia. High throughput sequencing (NGS) showed that the BTK gene of case 1 had c.1921c > t mutation; the BTK gene of case 2 had c.906-908del splice site mutation; the BTK gene of case 3 had c.718delg mutation; the cybb gene of case 4 had c.469c > t mutation; the IL2RG gene of case 5 had c.202g > A mutation; the STAT1 gene of case 6 had c.854a > G mutation; the case 7 had c.718delg mutation. There was c.1154c > t mutation in the STAT1 gene. Cases 1, 3, 6 and 7 were new mutations, and cases 2, 4, and 5 were inherited from mothers. In clinical cases of children with recurrent infection, the immunologic index is abnormal, so we need to be highly aware of the possibility of PID, and timely high-throughput sequencing is helpful for the diagnosis.
doi:10.21037/tp.2020.03.07 pmid:32477911 pmcid:PMC7237979 fatcat:g3bcps5p6jeyxor2plnx7nzcym

Field Emission and Emission-Stimulated Desorption of ZnO Nanomaterials

Nannan Li, Xiaozhao Li, Baoqing Zeng
2018 Applied Sciences  
Author Contributions: Nannan Li performed the fabrication and field emission test experiments, analyzed the data, and wrote an article; Xiaozhao Li help to analyze the data and participated in the discussion  ... 
doi:10.3390/app8030382 fatcat:25jza6ofi5efxd25neaixo4uda

ABCP: Automatic Block-wise and Channel-wise Network Pruning via Joint Search [article]

Jiaqi Li, Haoran Li, Yaran Chen, Zixiang Ding, Nannan Li, Mingjun Ma, Zicheng Duan, Dongbing Zhao
2021 arXiv   pre-print
Haoran Li, Yaran Chen, Zixiang Ding, Nannan Li, Mingjun Ma and Dongbin Zhao are with the State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of  ...  (ρ i ) (9) π(a li |s; θ µ li , θ ρ li ) ∼ N (μ i ,σ i 2 ) (10) a li ∼ π(a li ∈ C|s; θ µ li , θ ρ li ) (11) where µ i and ρ i in (7) and (8) are the two FC layers in the ith LSTM cell that estimate  ... 
arXiv:2110.03858v1 fatcat:qvkpuiqplvbujie6a2rjl6otta
« Previous Showing results 1 — 15 out of 1,253 results