منابع مشابه
On the Statistical Analysis of Dirty Pictures
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متن کاملDirty Statistical Models
We provide a unified framework for the high-dimensional analysis of“superposition-structured” or “dirty” statistical models: where the model param-eters are a superposition of structurally constrained parameters. We allow for anynumber and types of structures, and any statistical model. We consider the gen-eral class of M -estimators that minimize the sum of any loss function, a...
متن کاملQUIC & DIRTY: A Quadratic Approximation Approach for Dirty Statistical Models
In this paper, we develop a family of algorithms for optimizing “superpositionstructured” or “dirty” statistical estimators for high-dimensional problems involving the minimization of the sum of a smooth loss function with a hybrid regularization. Most of the current approaches are first-order methods, including proximal gradient or Alternating Direction Method of Multipliers (ADMM). We propose...
متن کاملThe Dirty War Index: Statistical Issues, Feasibility, and Interpretation
Perspective I n this issue of PLoS Medicine, Madelyn Hsiao-Rei Hicks and Michael Spagat propose a new quantitative tool [1] in the emerging field of human security sciences [2]. Quantitative data about people's insecurity can lead to objective knowledge about many of the contexts of violence in the world today. Thus developing quantitative tools for use in this domain is important. Hicks and Sp...
متن کاملEffect of Dirty Data on Analysis Results
Abstract: Information quality assessment is the process of inspecting business information to ensure that it meets the needs of the knowledge workers who depend on it. We suggest in this paper that, prior to implementing a system to assess quality, those responsible for information quality can use a subset of clean data to create a statistical model of a decision that relies on the information....
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ژورنال
عنوان ژورنال: Journal of Applied Statistics
سال: 1993
ISSN: 0266-4763,1360-0532
DOI: 10.1080/02664769300000059