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Social and Behavioral Sciences Commons™
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Articles 1 - 2 of 2
Full-Text Articles in Social and Behavioral Sciences
Projection Of Undirected And Non-Positional Graphs Using Self Organizing Maps, Markus Hagenbuchner, Shujia Zhang, Ah Chung Tsoi, Alessandro Sperduti
Projection Of Undirected And Non-Positional Graphs Using Self Organizing Maps, Markus Hagenbuchner, Shujia Zhang, Ah Chung Tsoi, Alessandro Sperduti
Faculty of Engineering and Information Sciences - Papers: Part A
Kohonen's Self-Organizing Map is a popular method which allows the projection of high dimensional data onto a low dimensional display space. Models of Self-Organizing Maps for the treatment of graphs have also been defined and studied. This paper proposes an extension to the GraphSOM model which substantially improves the stability of the model, and, as a side effect, allows for an acceleration of training. The proposed extension is based on a soft encoding of the information needed to represent the vertices of an input graph. Experimental results demonstrate the advantages of the proposed extension.
Numerical Study On Self-Similar Pulses In Mode-Locking Fiber Laser By Coupled Ginzburg-Landau Equation Model, Ting Lei, Chenghou Tu, Fuyun Lu, Yixin Deng, Enbang Li
Numerical Study On Self-Similar Pulses In Mode-Locking Fiber Laser By Coupled Ginzburg-Landau Equation Model, Ting Lei, Chenghou Tu, Fuyun Lu, Yixin Deng, Enbang Li
Faculty of Engineering and Information Sciences - Papers: Part A
A theoretical model is established to study the self-similar pulses in nonlinear polarization evolution (NPE) mode-locked fiber lasers. The propagation of pulse in single mode fibers and gain fibers are described by coupled Ginzburg- Landau equation (GLE). Two wave plates and a polarizer are considered to realize the NPE mechanism in simulation. This model describes the laser completely and provides some useful pulses' information. In our simulation the laser generates high quality self-similar pulses output. The region of steady self-similar pulses operation is found. The polarization states of different parts across the pulse are simulated along the laser cavity. It …