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This paper designs a time-varying nonlinear switching manifold in an optimal fashion for a class of nonlinear systems by developing the successive approximation approach of differential equation into infinite-time horizon. Based on the reaching law approach, we obtain a reach the nonlinear sliding surface. The stability of the nonlinear sliding mode is analyzed. The convergence velocity of every state...
Efficient extracting merchandise information is the key technology for e-commerce searching engine. By analyzing Web table characters of HTML pages of e-commerce Websites, this article proposes the notion of table area locating, and decomposes the merchandise information extraction into three key processes: searching preparative core areas (PCA), locating core area (CA) and extracting attribute values...
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