نتایج جستجو برای: graph regularization

تعداد نتایج: 217977  

Journal: :Information Sciences 2022

Graph Convolutional Networks (GCNs) have received a lot of attention in pattern recognition and machine learning. In this paper, we present revisited scheme for the new method called ”GCNs with Manifold Regularization” (GCNMR). While manifold regularization can add additional information, GCN-based semi-supervised classification process cannot consider full layer-wise structured information. In...

Journal: :نشریه دانشکده فنی 0
علیرضا آزموده اردلان دانشگاه تهران عبدالرضا صفری دانشگاه تهران یحیی توکلی دانشگاه تهران

the methods applied to regularization of the ill-posed problems can be classified under “direct” and “indirect” methods. practice has shown that the effects of different regularization techniques on an ill-posed problem are not the same, and as such each ill-posed problem requires its own investigation in order to identify its most suitable regularization method. in the geoid computations witho...

ژورنال: پژوهش های ریاضی 2015
Hosseni , S.M, Keshvari , A.R.,

A new technique to find the optimization parameter in TSVD regularization method is based on a curve which is drawn against the residual norm [5]. Since the TSVD regularization is a method with discrete regularization parameter, then the above-mentioned curve is also discrete. In this paper we present a mathematical analysis of this curve, showing that the curve has L-shaped path very similar t...

2008
Aram Galstyan Paul R. Cohen

The main idea behind graph-based semi–supervised learning is to use pair–wise similarities between data instances to enhance classification accuracy (see (Zhu, 2005) for a survey of existing approaches). Many graph–based techniques use certain type of regularization that often involve a graph Laplacian operator (e.g., see (Belkin et al., 2006)). Intuitively, this corresponds to a diffusion proc...

Journal: :CoRR 2011
Sundararajan Sellamanickam S. Sathiya Keerthi

In this paper we provide a principled approach to solve a transductive classification problem involving a similar graph (edges tend to connect nodes with same labels) and a dissimilar graph (edges tend to connect nodes with opposing labels). Most of the existing methods, e.g., Information Regularization (IR), Weighted vote Relational Neighbor classifier (WvRN) etc, assume that the given graph i...

2018
Arun Venkitaraman Saikat Chatterjee Peter Handel

We develop a multi-kernel based regression method for graph signal processing where the target signal is assumed to be smooth over a graph. In multi-kernel regression, an effective kernel function is expressed as a linear combination of many basis kernel functions. We estimate the linear weights to learn the effective kernel function by appropriate regularization based on graph smoothness. We s...

Journal: :Lecture Notes in Computer Science 2021

A novel framework called Graph diffusion & PCA (GDPCA) is proposed in the context of semi-supervised learning on graph structured data. It combines a modified Principal Component Analysis with classical supervised loss and Laplacian regularization, thus handling case where adjacency matrix Sparse avoiding Curse dimensionality. Our can be applied to non-graph datasets as well, such images by con...

2018
Yuan Li Garvesh Raskutti Rebecca Willett

Abstract: Sparse models for high-dimensional linear regression and machine learning have received substantial attention over the past two decades. Model selection, or determining which features or covariates are the best explanatory variables, is critical to the interpretability of a learned model. Much of the current literature assumes that covariates are only mildly correlated. However, in mo...

2013
Yong Peng Shen Wang Bao-Liang Lu

Domain adaptation, which aims to learn domain-invariant features for sentiment classification, has received increasing attention. The underlying rationality of domain adaptation is that the involved domains share some common latent factors. Recently neural network based on Stacked Denoising Auto-Encoders (SDA) and its marginalized version (mSDA) have shown promising results on learning domain-i...

2009
Ben Glocker Nikos Komodakis Nikos Paragios Nassir Navab

Labeling of discrete Markov Random Fields (MRFs) has become an attractive approach for solving the problem of non-rigid image registration. Here, regularization plays an important role in order to obtain smooth deformations for the inherent ill-posed problem. Smoothness is achieved by penalizing the derivatives of the displacement field. However, efficient optimization strategies (based on iter...

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