نتایج جستجو برای: fisher information matrix

تعداد نتایج: 1496621  

2002
Chen-Hsiang Yeang

The Fisher information matrix plays a very important role in both active learning and information geometry. In a special case of active learning (nonlinear regression with Gaussian noise), the inverse of the Fisher information matrix – the dispersion matrix of parameters – induces a variety of criteria for optimal experiment design. In information geometry, the Fisher information matrix defines...

1997
Howard Hua Yang

For blind source separation, when the Fisher information matrix is used as the Riemannian metric tensor for the parameter space, the steepest descent algorithm to maximize the likelihood function in this Riemannian parameter space becomes the serial updating rule with equivariant property. This algorithm can be further simplified by using the asymptotic form of the Fisher information matrix aro...

2013
Jean-François Bercher

We propose a modified χ-divergence, give some of its properties, and show that this leads to the definition of a generalized Fisher information. We give generalized Cramér-Rao inequalities, involving this Fisher information, an extension of the Fisher information matrix, and arbitrary norms and power of the estimation error. In the case of a location parameter, we obtain new characterizations o...

2013
Jean-Franccois Bercher

Abstract. We propose a modified χ-divergence, give some of its properties, and show that this leads to the definition of a generalized Fisher information. We give generalized Cramér-Rao inequalities, involving this Fisher information, an extension of the Fisher information matrix, and arbitrary norms and power of the estimation error. In the case of a location parameter, we obtain new character...

2008
Zhengdong Lu Todd K. Leen Jeffrey A. Kaye

We develop new techniques for time series classification based on hierarchical Bayesian generative models (called mixed-effect models) and the Fisher kernel derived from them. A key advantage of the new formulation is that one can compute the Fisher information matrix despite varying sequence lengths and varying sampling intervals. This avoids the commonly-used ad hoc replacement of the Fisher ...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2011
o. j, okwu m. a, yahaya c. p. o, obinne

the study analyzed the information needs and accessibility of artisanal fisher folk in benue state, nigeria. multistage sampling technique was used to select two fishing communities from each of the three agro-ecological zones in the study area. a structured questionnaire was used to collect primary data from 222 respondents. descriptive statistics showed that artisanal fisher folk were mostly ...

Journal: :IEEE Trans. Signal Processing 2015
Pooria Pakrooh Ali Pezeshki Louis L. Scharf Douglas Cochran Stephen D. Howard

In this paper, we analyze the impact of compression with complex random matrices on Fisher information and the Cramér-Rao Bound (CRB) for estimating unknown parameters in the mean value function of a complex multivariate normal distribution. We consider the class of random compression matrices whose distribution is right-unitarily invariant. The compression matrix whose elements are i.i.d. stan...

2009
Maha El Choubassi Pierre Moulin

Sensitivity analysis attacks aim at estimating a watermark from multiple observations of the detector’s output. Subsequently, the attacker removes the estimated watermark from the watermarked signal. In order to measure the vulnerability of a detector against such attacks, we evaluate the fundamental performance limits for the attacker’s estimation problem. The inverse of the Fisher information...

2008
Hee-Jong Seo

We present the cosmological distance errors achievable using the baryon acoustic oscillations as a standard ruler. We begin from a Fisher matrix formalism that is upgraded from Seo & Eisenstein (2003). We isolate the information from the baryonic peaks by excluding distance information from other less robust sources. Meanwhile we accommodate the Lagrangian displacement distribution into the Fis...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید