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The LASSO risk: asymptotic results and real world examples
Coefficient vector linear observation construct sparse the lasso matrix sequence
2015/8/21
We consider the problem of learning a coefficient vector x0 ∈ RN from noisy linear observation y = Ax0 + w ∈ Rn. In many contexts (ranging from model
selection to image processing) it is desirable to...
Consider estimating the mean vector from data Nn(; 2I ) with lq norm loss,
q 1, when is known to lie in an n-dimensional lp ball, p 2 (0; 1). For large
n, the ratio of minimax linear risk to...
Wavelets have motivated development of a host of new ideas in nonparametric
regression smoothing. Here we apply the tool of exact risk analysis, to understand the
small sample behavior of wavelet es...
The LASSO risk for gaussian matrices
Noisy linear observation vector image processing the matrix sequence
2015/8/20
We consider the problem of learning a coecient vector x0 2 R N from noisy linear observation y = Ax0 + w 2 R n. In many contexts (ranging from model selection to image processing) it is desirable to ...
Limits on the potential accuracy of earthquake risk evaluations using the L’Aquila (Italy) earthquake as an example
earthquake risk evaluations earthquake
2015/8/17
This article is concerned with attempting to ‘predict’ (hindcast) the
damage caused by the L’Aquila 2009 earthquake (Mw 6.3) and, more
generally, with the question of how close predicted damage can ...
Focus maps:a means of prioritizing data collection for efficient geo-risk assessment
Geo-risk assessment Vulnerability Data collection Sampling
2015/8/17
Efficient Disaster Risk Reduction (DRR) management constantly calls upon high-quality information to be collected or updated for vulnerability monitoring and risk assessment. This process is often res...
Limits on the potential accuracy of earthquake risk evaluations using the L’Aquila (Italy) earthquake as an example
Seismic risk Hindcasting L'Aquila earthquake Damage evaluation Epistemic uncertainty
2015/8/14
This article is concerned with attempting to ‘predict’ (hindcast) the damage caused by the L’Aquila 2009 earthquake (Mw 6.3) and, more generally, with the question of how close predicted damage can ev...
Focus maps: a means of prioritizing data collection for efficient geo-risk assessment
Geo-risk assessment Vulnerability Data collection Sampling
2015/8/14
Efficient Disaster Risk Reduction (DRR) management constantly calls upon high-quality information to be collected or updated for vulnerability monitoring and risk assessment. This process is often res...
Flood susceptible mapping and risk area delineation using logistic regression, GIS and remote sensing
Flood susceptibility analysis logistic regression model
2015/8/14
Recently, in the year 2006, 2007 and 2008 heavy monsoons rainfall have triggered floods along Malaysia's east coast as well as in different parts of the country. The hardest hit areas are along the ea...
A Model for the Interaction Between Business and Science: The Risk Prediction Initiative at the Bermuda Biological Station for Research
Business and Science Bermuda Biological Station
2015/8/13
The Bermuda Biological Station for Research (BBSRI was established in 1903 and since then has been carrying out longterm research on the ocean and atmosphere. In response m the more recent societal in...
Erosion Risk Assessment using an Empirical Model of Pacific South West Inter Agency Committee Method for Zargeh Watershed, Iran
MPSIAC Erosion Sediment Yield Iran
2015/8/11
Watershed degradation due to soil erosion and sedimentation is one of the major environmental problems in Iran. In addressing the issue, a study on the validity of an empirical model of Pacific South ...
Risk Assessment and Ecotoxicology:Limitations and Recommendations for Ocean Disposal of Mine Waste in the Coral Triangle
Risk Assessment Ecotoxicology:Ocean Disposal Mine Waste Coral Triangle
2015/7/15
Mining is an important contribution to the economy of many developing tropical regions. Many sites of mining interest in the tropics have island geographies and potentially limited land area. While th...
he horrific December 26, 2004, Indian Ocean tsunami, which killed over 230,000 people and displaced 1.7 million across 14 countries, stimulated governments of the world into addressing tsunami hazards...
Long-term effect of diet amended by risk elements contaminated soils on risk element penetration and physiological parameters of rats
risk elements soil soil ingestion
2015/7/2
The long-term accumulation of risk elements (As, Cd, Pb) originated from differently contaminated soils in rat organism was investigated during a model two-generation experiment. The effect of soil co...
Unbiased Risk Estimates for Singular Value Thresholding and Spectral Estimators
Singular value thresholding Stein’s unbiased risk estimate (SURE) differentiability of eigenvalues and eigenvectors magnetic resonance cardiac imaging
2015/6/17
In an increasing number of applications, it is of interest to recover an approximately low-rank data matrix from noisy observations. This paper develops an unbiased risk estimate—holding in a Gaussian...