Helpful online product reviews, which include massive information, have large impacts on customers? purchasing decisions. In most of e-commerce platforms, the helpfulness reviews are decided by votes from other customers. Making full use these with has enormous commercial value, especially in recommendation. It drives researchers to study technologies about how evaluate review automatically. Al...

Abstract This research, to design and develop a concept map authoring support tool, adopts semi-automatic mapping approach help teachers create maps from English readings. A is widely regarded as useful teaching learning tool. It offers many potential advantages apart representing the students’ knowledge understanding during learning. Students’ engagement in using creating with computer-enabled...

Following the first part of our research, we prove in this paper that a sub-hyperbolic semi-rational map with infinite post-critical set is combinatorially and locally holomorphically equivalent to a rational map if and only if it has no Thurston obstruction. Moreover, the rational map is unique up to holomorphic conjugation.

In Distributed Simultaneous Localization and Mapping (SLAM), multiple agents generate a global map of the environment while each performing its local SLAM operation. One of the main challenges is to identify overlapping maps, especially when agents do not know their relative starting positions. In this paper we are introducing a distributed framework which uses an appearance based method to ide...

Recall that a subset of R is called semi-algebraic if it can be represented as a (finite) boolean combination of sets of the form {~ α ∈ R : p(~ α) = 0}, {~ α ∈ R : q(~ α) > 0} where p(~x), q(~x) are n-variable polynomials with real coefficients. A map from R to R is called semi-algebraic if its graph, considered as a subset of R, is so. The geometry of such sets and maps (“semi-algebraic geome...

We study the class of entire transcendental maps of finite order with one critical point and one asymptotic value, which has exactly one finite pre-image, and having a persistent Siegel disc. After normalisation this is a one parameter family fa with a ∈ C ∗ which includes the semi-standard map λzez at a = 1, approaches the exponential map when a → 0 and a quadratic polynomial when a → ∞. We in...

Paterson [l] has recently shown that the trivial necessary conditions are sufficient for the existence of a (binary) perfect map. These periodic structures can be transformed very simply into corresponding aperiodic and semi-periodic perfect maps. However, aperiodic and semi-periodic perfect maps can exist for parameter sets for which the corresponding periodic perfect maps cannot. In this pape...

We investigate the semi-classical properties of a two-parameter family of piece-wise linear maps on the torus known as the Casati-Prosen or triangle map. This map is weakly chaotic and has zero Lyapunov exponent. A correspondence between classical and quantum observables is established, leading to an appropriate statement regarding equidistribution of eigenfunctions in the semi-classical limit....