نتایج جستجو برای: taxicab geometry

تعداد نتایج: 144726  

Journal: :IEEE Trans. Pattern Anal. Mach. Intell. 1999
Nei Kato Masato Suzuki Shinichiro Omachi Hirotomo Aso Yoshiaki Nemoto

This paper presents a precise system for handwritten Chinese and Japanese character recognition. Before extracting directional element feature (DEF) from each character image, transformation based on partial inclination detection (TPID) is used to reduce undesired effects of degraded images. In the recognition process, city block distance with deviation (CBDD) and asymmetric Mahalanobis distanc...

2003
B. L. S. Prakasa Rao

We investigate the asymptotic properties of the minimum L1-norm estimator of the drift parameter for fractional Ornstein-Uhlenbeck type process satisfying a linear stochastic differential equation driven by a fractional Brownian motion.

2017
Akanksha Saran Reymundo A. Gutierrez

We finetune pretrained AlexNet and 16-layer VGGNet models over the yearbook dataset, predicting years in which the input images were taken. We discuss our approach and findings with the best performing model (L1 distance of 5.48 or 5% accuracy over the validation set).

2016
Tomas Engelthaler Thomas T. Hills

Feature distinctiveness is a measure representing the uniqueness of objects’ features. Previous research found links between noun feature distinctiveness and age of acquisition (i.e. nouns referring to objects with relatively unique features are learned earlier). The present work investigates the links between feature distinctiveness and age of acquisition in verbs. Using high-dimensional vecto...

2007
M A Rabbani C. Chellappan

Different statistical methods for face recognition have been proposed in recent years. They mostly differ in the type of projection and distance measure used. The aim of this paper is to effectively identify a frontal human face with better recognition rate using appearance-based statistical method for Face Recognition. We used Median instead of mean and with different distance measures like ci...

2005
TETSUTARO SHIBATA

We consider the nonlinear eigenvalue problem −u′′(t) = f(λ, u(t)), u > 0, u(0) = u(1) = 0, where λ > 0 is a parameter. It is known that under some conditions on f(λ, u), the shape of the solutions associated with λ is almost ‘box’ when λ 1. The purpose of this paper is to study precisely the asymptotic shape of the solutions as λ → ∞ from a standpoint of L1-framework. To do this, we establish t...

Journal: :Traitement du Signal 2010
Matthieu Kowalski Alexandre Gramfort

We are interested by under-determined inverse problems, and more specifically by source localization in magneto and electro-encephalography (M/EEG). Although there is a physical model for the diffusion (or “mixing”) of the sources, the (very) under-determined nature of the problem leads to a difficult inversion. The need for strong and physically relevant priors on the sources is one of the cha...

Journal: :European Journal of Operational Research 2014
José Miguel Díaz-Báñez Matias Korman Pablo Pérez-Lantero Inmaculada Ventura

In this paper we study a facility location problem in the plane in which a single point (facility) and a rapid transit line (highway) are simultaneously located in order to minimize the total travel time from the clients to the facility, using the L1 or Manhattan metric. The rapid transit line is given by a segment with any length and orientation, and is an alternative transportation line that ...

2011
José Miguel Díaz-Báñez Matias Korman Pablo Pérez-Lantero Inmaculada Ventura

1 In this paper we study a facility location problem in the plane in which a single point (facility) 2 and a rapid transit line (highway) are simultaneously located in order to minimize the total travel 3 time of the clients to the facility, using the L1 or Manhattan metric. The rapid transit line is 4 represented by a line segment with fixed length and arbitrary orientation. The highway is an ...

Journal: :Annals OR 2010
Li Wang Ji Zhu

Many image denoising methods can be characterized as minimizing “loss + penalty,” where the “loss” measures the fidelity of the denoised image to the data, and the “penalty” measures the smoothness of the denoising function. In this paper, we propose two models that use the L1-norm of the pixel updates as the penalty. The L1-norm penalty has the advantage of changing only the noisy pixels, whil...

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