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Performance Evaluation of 3D Correspondence Grouping Algorithms [article]

Jiaqi Yang, Ke Xian, Yang Xiao, Zhiguo Cao
2018 arXiv   pre-print
This paper presents a thorough evaluation of several widely-used 3D correspondence grouping algorithms, motived by their significance in vision tasks relying on correct feature correspondences. A good correspondence grouping algorithm is desired to retrieve as many as inliers from initial feature matches, giving a rise in both precision and recall. Towards this rule, we deploy the experiments on three benchmarks respectively addressing shape retrieval, 3D object recognition and point cloud
more » ... nd point cloud registration scenarios. The variety in application context brings a rich category of nuisances including noise, varying point densities, clutter, occlusion and partial overlaps. It also results to different ratios of inliers and correspondence distributions for comprehensive evaluation. Based on the quantitative outcomes, we give a summarization of the merits/demerits of the evaluated algorithms from both performance and efficiency perspectives.
arXiv:1804.02085v1 fatcat:yd2exjbva5emjaohxb7nknmijq

Comparative evaluation of 2D feature correspondence selection algorithms [article]

Chen Zhao, Jiaqi Yang, Yang Xiao, Zhiguo Cao
2019 arXiv   pre-print
Correspondence selection aiming at seeking correct feature correspondences from raw feature matches is pivotal for a number of feature-matching-based tasks. Various 2D (image) correspondence selection algorithms have been presented with decades of progress. Unfortunately, the lack of an in-depth evaluation makes it difficult for developers to choose a proper algorithm given a specific application. This paper fills this gap by evaluating eight 2D correspondence selection algorithms ranging from
more » ... ithms ranging from classical methods to the most recent ones on four standard datasets. The diversity of experimental datasets brings various nuisances including zoom, rotation, blur, viewpoint change, JPEG compression, light change, different rendering styles and multi-structures for comprehensive test. To further create different distributions of initial matches, a set of combinations of detector and descriptor is also taken into consideration. We measure the quality of a correspondence selection algorithm from four perspectives, i.e., precision, recall, F-measure and efficiency. According to evaluation results, the current advantages and limitations of all considered algorithms are aggregately summarized which could be treated as a "user guide" for the following developers.
arXiv:1904.13383v1 fatcat:sak2p5onancqra4qjhvernvfkm

Fully Gap-Dependent Bounds for Multinomial Logit Bandit [article]

Jiaqi Yang
2020 arXiv   pre-print
Acknowledgments Jiaqi Yang would like to thank Yuan Zhou for the invaluable comments and suggestions.  ...  Wei Chen, Yajun Wang, Yang Yuan, and Qinshi Wang. Combinatorial multi-armed bandit and its extension to probabilistically triggered arms.  ... 
arXiv:2011.09998v1 fatcat:e4rktnkesneldc4poo5qnr5qb4

Wireless Fractal Cellular Networks [article]

Xiaohu Ge, Yehong Qiu, Jiaqi Chen, Meidong Huang, Hui Xu, Jing Xu, Wuxiong Zhang, Yang Yang, Cheng-Xiang Wang, John Thompson
2016 arXiv   pre-print
With the seamless coverage of wireless cellular networks in modern society, it is interesting to consider the shape of wireless cellular coverage. Is the shape a regular hexagon, an irregular polygon, or another complex geometrical shape? Based on fractal theory, the statistical characteristic of the wireless cellular coverage boundary is determined by the measured wireless cellular data collected from Shanghai, China. The measured results indicate that the wireless cellular coverage boundary
more » ... coverage boundary presents an extremely irregular geometrical shape, which is also called a statistical fractal shape. Moreover, the statistical fractal characteristics of the wireless cellular coverage boundary have been validated by values of the Hurst parameter estimated in angular scales. The statistical fractal characteristics of the wireless cellular coverage boundary can be used to evaluate and design the handoff scheme of mobile user terminals in wireless cellular networks.
arXiv:1610.05431v1 fatcat:cie4gc6ncnd3dlzrn5f52fk6xe

Hierarchical porous carbon nanofibers via electrospinning

Aikifa Raza, Jiaqi Wang, Shan Yang, Yang Si, Bin Ding
2014 Carbon letters  
Kim and Yang [22] reported that the specific surface area of steam-ACNFs decreased with increasing activation temperature (from 700-850°C) due to the unification of micropores at elevated temperatures  ... 
doi:10.5714/cl.2014.15.1.001 fatcat:p3ihlryykjgffljgprfox4hiam

GoldCLIP: Gel-omitted Ligation-dependent CLIP

Jiaqi Gu, Ming Wang, Yang Yang, Ding Qiu, Yiqun Zhang, Jinbiao Ma, Yu Zhou, Gregory J. Hannon, Yang Yu
2018 Genomics, Proteomics & Bioinformatics  
Protein-RNA interaction networks are essential to understand gene regulation control. Identifying binding sites of RNA-binding proteins (RBPs) by the UV-crosslinking and immunoprecipitation (CLIP) represents one of the most powerful methods to map protein-RNA interactions in vivo. However, the traditional CLIP protocol is technically challenging, which requires radioactive labeling and suffers from material loss during PAGE-membrane transfer procedures. Here we introduce a super-efficient CLIP
more » ... per-efficient CLIP method (GoldCLIP) that omits all gel purification steps. This nonisotopic method allows us to perform highly reproducible CLIP experiments with polypyrimidine tract-binding protein (PTB), a classical RBP in human cell lines. In principle, our method guarantees sequencing library constructions, providing the protein of interest can be successfully crosslinked to RNAs in living cells. GoldCLIP is readily applicable to diverse proteins to uncover their endogenous RNA targets.
doi:10.1016/j.gpb.2018.04.003 pmid:29709556 pmcid:PMC6112358 fatcat:usnavlndpzcv5lch6fcjvzqxam

A Robust Scheme for 3D Point Cloud Copy Detection [article]

Jiaqi Yang, Xuequan Lu, Wenzhi Chen
2021 arXiv   pre-print
Jiaqi Yang received a master's degree in computer science and technology from the School of Computer Science, Zhejiang University.  ... 
arXiv:2110.00972v1 fatcat:6uxlqp5zmfghpembirwgyte5ja

Energy-efficient Amortized Inference with Cascaded Deep Classifiers [article]

Jiaqi Guan, Yang Liu, Qiang Liu, Jian Peng
2017 arXiv   pre-print
Others (Li et al. 2015; Yang, Choi, and Lin 2016) consider cascaded classifiers in object detection to quickly reject proposals that are easy to judge.  ... 
arXiv:1710.03368v1 fatcat:cbcfezpbt5fdveuc3shdedoyui

On the steady non-Newtonian fluids in domains with noncompact boundaries [article]

Jiaqi Yang, Huicheng Yin
2016 arXiv   pre-print
In this paper, we study non-Newtonian fluids in a class of unbounded domains with noncompact boundaries. With respect to the resulting mathematical problems, we establish the global existence of solutions with arbitrary large flux under some suitable conditions, and meanwhile, show the uniqueness of the solutions when the flux is sufficiently small. Our results are an extension or an improvement of those obtained in some previous references.
arXiv:1611.07613v1 fatcat:vef62rja5jg7zmvin432aso67m

Wireless fractal cellular networks

Xiaohu Ge, Yehong Qiu, Jiaqi Chen, Meidong Huang, Hui Xu, Jing Xu, Wuxiong Zhang, Yang Yang, Cheng-Xiang Wang, John Thompson
2016 IEEE wireless communications  
With the seamless coverage of wireless cellular networks in modern society, it is interesting to consider the shape of wireless cellular coverage. Is the shape a regular hexagon, an irregular polygon, or another complex geometrical shape? Based on fractal theory, the statistical characteristic of the wireless cellular coverage boundary is determined by the measured wireless cellular data collected from Shanghai, China. The measured results indicate that the wireless cellular coverage boundary
more » ... coverage boundary presents an extremely irregular geometrical shape, which is also called a statistical fractal shape. Moreover, the statistical fractal characteristics of the wireless cellular coverage boundary have been validated by values of the Hurst parameter estimated in angular scales. The statistical fractal characteristics of the wireless cellular coverage boundary can be used to evaluate and design the handoff scheme of mobile user terminals in wireless cellular networks.
doi:10.1109/mwc.2016.7721749 fatcat:qfgk7o3sv5d3rpfnaknvtaoapu

Orthogonal CRISPR-associated transposases for parallel and multiplexed chromosomal integration

Siqi Yang, Yiwen Zhang, Jiaqi Xu, Jiao Zhang, Jieze Zhang, Junjie Yang, Yu Jiang, Sheng Yang
2021 Nucleic Acids Research  
Cell engineering is commonly limited to the serial manipulation of a single gene or locus. The recently discovered CRISPR-associated transposases (CASTs) could manipulate multiple sets of genes to achieve predetermined cell diversity, with orthogonal CASTs being able to manipulate them in parallel. Here, a novel CAST from Pseudoalteromonas translucida KMM520 (PtrCAST) was characterized without a protospacer adjacent motif (PAM) preference which can achieve a high insertion efficiency for larger
more » ... ficiency for larger cargo and multiplexed transposition and tolerate mismatches out of 4-nucleotide seed sequence. More importantly, PtrCAST operates orthogonally with CAST from Vibrio cholerae Tn6677 (VchCAST), though both belonging to type I-F3. The two CASTs were exclusively active on their respective mini-Tn substrate with their respective crRNAs that target the corresponding 5 and 2 loci in one Escherichia coli cell. The multiplexed orthogonal MUCICAT (MUlticopy Chromosomal Integration using CRISPR-Associated Transposases) is a powerful tool for cell programming and appears promising with applications in synthetic biology.
doi:10.1093/nar/gkab752 pmid:34478496 pmcid:PMC8464060 fatcat:zfkonmpfinhevkzkmkwuujhl34

NM-Net: Mining Reliable Neighbors for Robust Feature Correspondences [article]

Chen Zhao, Zhiguo Cao, Chi Li, Xin Li, Jiaqi Yang
2019 arXiv   pre-print
Feature correspondence selection is pivotal to many feature-matching based tasks in computer vision. Searching for spatially k-nearest neighbors is a common strategy for extracting local information in many previous works. However, there is no guarantee that the spatially k-nearest neighbors of correspondences are consistent because the spatial distribution of false correspondences is often irregular. To address this issue, we present a compatibility-specific mining method to search for
more » ... search for consistent neighbors. Moreover, in order to extract and aggregate more reliable features from neighbors, we propose a hierarchical network named NM-Net with a series of convolution layers taking the generated graph as input, which is insensitive to the order of correspondences. Our experimental results have shown the proposed method achieves the state-of-the-art performance on four datasets with various inlier ratios and varying numbers of feature consistencies.
arXiv:1904.00320v1 fatcat:owbeapc4v5bqxatdvafthbnidu

Region Proposal by Guided Anchoring [article]

Jiaqi Wang, Kai Chen, Shuo Yang, Chen Change Loy, Dahua Lin
2019 arXiv   pre-print
Region anchors are the cornerstone of modern object detection techniques. State-of-the-art detectors mostly rely on a dense anchoring scheme, where anchors are sampled uniformly over the spatial domain with a predefined set of scales and aspect ratios. In this paper, we revisit this foundational stage. Our study shows that it can be done much more effectively and efficiently. Specifically, we present an alternative scheme, named Guided Anchoring, which leverages semantic features to guide the
more » ... ures to guide the anchoring. The proposed method jointly predicts the locations where the center of objects of interest are likely to exist as well as the scales and aspect ratios at different locations. On top of predicted anchor shapes, we mitigate the feature inconsistency with a feature adaption module. We also study the use of high-quality proposals to improve detection performance. The anchoring scheme can be seamlessly integrated into proposal methods and detectors. With Guided Anchoring, we achieve 9.1% higher recall on MS COCO with 90% fewer anchors than the RPN baseline. We also adopt Guided Anchoring in Fast R-CNN, Faster R-CNN and RetinaNet, respectively improving the detection mAP by 2.2%, 2.7% and 1.2%. Code will be available at https://github.com/open-mmlab/mmdetection.
arXiv:1901.03278v2 fatcat:6w5w77ndw5bffgd4jdyp5iu7gm

A spatiotemporal translatome of mouse tissue development [article]

Hongwei Wang, Yan Wang, Jiaqi Yang, Nan Tang, Huihui Li, Mingzhe Xie, Zhi Xie
2020 bioRxiv   pre-print
AbstractThe precise regulation of gene expression in mammalian tissues during development results in their functional specification. Although previous transcriptomic and proteomic analyses have provided great biological insights into tissue-specific gene expression and the physiological relevance of these tissues in development, our understanding of translational regulation in developing tissues is lacking. In this study, we performed a spatiotemporally resolved translatome analysis of six
more » ... nalysis of six mouse tissues at the embryonic and adult stages to quantify the effects of translational regulation and identify new translational components. We quantified the spatial and temporal divergences of gene expression and detected specific changes in gene expression and pathways underlying these divergences. We further showed that dynamic translational control can be achieved by modulating the translational efficiency, which resulted in the enhancement of tissue specificity during development. We also discovered thousands of actively translated upstream open reading frames (ORFs) that exhibited spatiotemporal patterns and demonstrated their regulatory roles in translational regulation. Furthermore, we identified known and novel micropeptides encoded by small ORFs from long noncoding RNAs that are functionally relevant to tissue development. Our data and analyses facilitate a better understanding of the complexity of translational regulation across tissue and developmental spectra and serve as a useful resource of the mouse translatome.
doi:10.1101/2020.04.14.041079 fatcat:n4wi477mbzadlb4e4qxtc655jq

Tissue- and stage-specific landscape of the mouse translatome

Hongwei Wang, Yan Wang, Jiaqi Yang, Qian Zhao, Nan Tang, Congying Chen, Huihui Li, Chichi Cheng, Mingzhe Xie, Yang Yang, Zhi Xie
2021 Nucleic Acids Research  
The current understanding of how overall principles of translational control govern the embryo-to-adult transition in mammals is still far from comprehensive. Herein we profiled the translatomes and transcriptomes of six tissues from the mice at embryonic and adult stages and presented the first report of tissue- and stage-specific translational landscape in mice. We quantified the extent of gene expression divergence among different expression layers, tissues and stages, detected significant
more » ... ected significant changes in gene composition and function underlying these divergences and revealed the changing architecture of translational regulation. We further showed that dynamic translational regulation can be largely achieved via modulation of translational efficiency. Translational efficiency could be altered by alternative splicing (AS), upstream and downstream open reading frames (uORFs and dORFs). We revealed AS-mediated translational repression that was exerted in an event type-dependent manner. uORFs and dORFs exhibited mutually exclusive usage and the opposing effects of translational regulation. Furthermore, we discovered many novel microproteins encoded by long noncoding RNAs and demonstrated their regulatory potential and functional relevance. Our data and analyses will facilitate a better understanding of the complexity of translation and translational regulation across tissue and stage spectra and provide an important resource to the translatome research community.
doi:10.1093/nar/gkab482 pmid:34107020 fatcat:pre4ojr2zvecratxevixifo6a4
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