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科研机构
北京大学 [18]
内容类型
期刊论文 [18]
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2017 [1]
2016 [2]
2015 [2]
2014 [5]
2013 [1]
2011 [1]
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内容类型:期刊论文
专题:北京大学
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Nested sparse grid collocation method with delay and transformation for subsurface flow and transport problems
期刊论文
ADVANCES IN WATER RESOURCES, 2017
Liao, Qinzhuo
;
Zhang, Dongxiao
;
Tchelepi, Hamdi
收藏
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浏览/下载:3/0
  |  
提交时间:2017/12/03
GENERALIZED POLYNOMIAL CHAOS
DIFFERENTIAL-EQUATIONS
NUMERICAL-INTEGRATION
ADAPTIVE QUADRATURE
KALMAN FILTER
FEKETE POINTS
POROUS-MEDIA
UNCERTAINTY
CUBATURE
MODELS
Adapting to User Interest Drift for POI Recommendation
期刊论文
IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING, 2016
Yin, Hongzhi
;
Zhou, Xiaofang
;
Cui, Bin
;
Wang, Hao
;
Zheng, Kai
;
Quoc Viet Hung Nguyen
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
POI recommendation
user interest drift
collective inference
social-spatial correlation
user modeling
Image Denoising via Bandwise Adaptive Modeling and Regularization Exploiting Nonlocal Similarity
期刊论文
IEEE TRANSACTIONS ON IMAGE PROCESSING, 2016
Xiong, Ruiqin
;
Liu, Hangfan
;
Zhang, Xinfeng
;
Zhang, Jian
;
Ma, Siwei
;
Wu, Feng
;
Gao, Wen
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Image denoising
transform domain modeling
bandwise modeling
adaptive regularization
adaptive soft-thresholding
nonlocal similarity
GAUSSIAN MIXTURE-MODELS
SPARSE REPRESENTATION
LEARNED DICTIONARIES
TRANSFORM-DOMAIN
RESTORATION
NOISE
RECONSTRUCTION
COMPRESSION
ESTIMATORS
REGRESSION
Comparison of the driving forces of spring phenology among savanna landscapes by including combined spatial and temporal heterogeneity
期刊论文
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY, 2015
Zhu, Likai
;
Southworth, Jane
;
Meng, Jijun
收藏
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浏览/下载:5/0
  |  
提交时间:2017/12/03
Southern Africa
Savanna
Land surface phenology
Spatial panel data models
The start of the growing season (SOS)
NET PRIMARY PRODUCTION
GREEN-UP DATE
SOUTHERN AFRICA
VEGETATION PHENOLOGY
PRIMARY PRODUCTIVITY
NORTH-AMERICA
TIME-SERIES
NDVI DATA
CLIMATE
PRECIPITATION
Image Super-Resolution Based on Structure-Modulated Sparse Representation
期刊论文
IEEE TRANSACTIONS ON IMAGE PROCESSING, 2015
Zhang, Yongqin
;
Liu, Jiaying
;
Yang, Wenhan
;
Guo, Zongming
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Super-resolution
ridge regression
sparse representation
dictionary learning
gradient histogram
HIGH-RESOLUTION IMAGE
EDGE-DIRECTED INTERPOLATION
LINEAR INVERSE PROBLEMS
SUPER RESOLUTION
RECONSTRUCTION
ALGORITHMS
VIDEO
REGULARIZATION
REGISTRATION
DICTIONARIES
Current systematic carbon-cycle observations and the need for implementing a policy-relevant carbon observing system
期刊论文
biogeosciences, 2014
Ciais, P.
;
Dolman, A. J.
;
Bombelli, A.
;
Duren, R.
;
Peregon, A.
;
Rayner, P. J.
;
Miller, C.
;
Gobron, N.
;
Kinderman, G.
;
Marland, G.
;
Gruber, N.
;
Chevallier, F.
;
Andres, R. J.
;
Balsamo, G.
;
Bopp, L.
;
Breon, F.M.
;
Broquet, G.
;
Dargaville, R.
;
Battin, T. J.
;
Borges, A.
;
Bovensmann, H.
;
Buchwitz, M.
;
Butler, J.
;
Canadell, J. G.
;
Cook, R. B.
;
DeFries, R.
;
Engelen, R.
;
Gurney, K. R.
;
Heinze, C.
;
Heimann, M.
;
Held, A.
;
Henry, M.
;
Law, B.
;
Luyssaert, S.
;
Miller, J.
;
Moriyama, T.
;
Moulin, C.
;
Myneni, R. B.
;
Nussli, C.
;
Obersteiner, M.
;
Ojima, D.
;
Pan, Y.
;
Par
收藏
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浏览/下载:8/0
  |  
提交时间:2015/11/16
NET ECOSYSTEM EXCHANGE
HYPERSPECTRAL INFRARED OBSERVATIONS
EDDY COVARIANCE MEASUREMENTS
GREENHOUSE-GAS EMISSIONS
COLUMN-AVERAGED METHANE
FOSSIL-FUEL COMBUSTION
CO2 SURFACE FLUXES
ATMOSPHERIC CO2
DIOXIDE EMISSIONS
FOREST BIOMASS
Group-Based Sparse Representation for Image Restoration
期刊论文
ieee transactions on image processing, 2014
Zhang, Jian
;
Zhao, Debin
;
Gao, Wen
收藏
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浏览/下载:2/0
  |  
提交时间:2015/11/11
Image restoration
sparse representation
nonlocal self-similarity
deblurring
inpainting
compressive sensing
COMPRESSIVE SENSING RECOVERY
TOTAL VARIATION MINIMIZATION
ALGORITHMS
PURSUIT
SUPERRESOLUTION
RECONSTRUCTION
REGULARIZATION
APPROXIMATION
DICTIONARIES
Challenges Toward Wireless Communications for High-Speed Railway
期刊论文
ieee transactions on intelligent transportation systems, 2014
Ai, Bo
;
Cheng, Xiang
;
Kuerner, Thomas
;
Zhong, Zhang-Dui
;
Guan, Ke
;
He, Rui-Si
;
Xiong, Lei
;
Matolak, David W.
;
Michelson, David G.
;
Briso-Rodriguez, Cesar
收藏
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浏览/下载:4/0
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提交时间:2015/11/11
Channel modeling
composite transportation
cuttings and tunnels
high-speed railway (HSR)
operation control system
train control data
viaducts
LINE-OF-SIGHT
PROPAGATION MEASUREMENTS
SPARSE MULTIPATH
MIMO CAPACITY
CHANNEL MODEL
TUNNELS
SYSTEMS
BAND
MHZ
ENVIRONMENTS
LCARS: A Spatial Item Recommender System
期刊论文
acm transactions on information systems, 2014
Yin, Hongzhi
;
Cui, Bin
;
Sun, Yizhou
;
Hu, Zhiting
;
Chen, Ling
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2015/11/16
Algorithms
Design
Experimentation
Performance
Recommender system
location-based service
probabilistic generative model
TA algorithm
cold start
DATABASES
ALGORITHMS
QUERIES
Learning Cross-Media Joint Representation With Sparse and Semisupervised Regularization
期刊论文
ieee transactions on circuits and systems for video technology, 2014
Zhai, Xiaohua
;
Peng, Yuxin
;
Xiao, Jianguo
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2015/11/13
Cross-media retrieval
joint representation learning (JRL)
semisupervised regularization
sparse regularization
SIMILARITY MEASURE
RETRIEVAL
MODEL
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