Showing 1 - 10 of 10
In this paper, we introduce a modified collaborative filtering (MCF) algorithm, which has remarkably higher accuracy than the standard collaborative filtering. In the MCF, instead of the cosine similarity index, the user–user correlations are obtained by a diffusion process. Furthermore, by...
Persistent link: https://www.econbiz.de/10011424630
In this Brief Report, we propose an index of user similarity, namely, the transferring similarity, which involves all high-order similarities between users. Accordingly, we design a modified collaborative filtering algorithm, which provides remarkably higher accurate predictions than the...
Persistent link: https://www.econbiz.de/10011424631
In this paper, we propose a spreading activation approach for collaborative filtering (SACF). By using the opinion spreading process, the similarity between any users can be obtained. The algorithm has remarkably higher accuracy than the standard collaborative filtering using the Pearson...
Persistent link: https://www.econbiz.de/10011424632
In this article, we proposed a susceptible-infected model with identical infectivity, in which, at every time step, each node can only contact a constant number of neighbors. We implemented this model on scale-free networks, and found that the infected population grows in an exponential form...
Persistent link: https://www.econbiz.de/10011424638
House prices crash has become an important feature of macroeconomic crisis. We argue that house prices crash driven by contractionary monetary policy is not only a reaction to crisis, but also accelerates and amplifies the fluctuations of major macroeconomic variable. In this paper, we conduct a...
Persistent link: https://www.econbiz.de/10015229498
The crash of house prices has become an important feature of macroeconomic crisis. We argue that the crash of house prices driven by contractionary monetary policy is not only a reaction, but also accelerates and amplifies the fluctuations of major macroeconomic variables. The impulse response...
Persistent link: https://www.econbiz.de/10015229846
We consider the inference problem of estimating covariate and genetic effects in a family-based case-control study where families are ascertained on the basis of the number of cases within the family. However, our interest lies not only in estimating the fixed covariate effects but also in...
Persistent link: https://www.econbiz.de/10009477024
Two representative computational models for switching between internal models have been proposed (Imamizu et al., 2004), namely a mixture-of-experts model (Gomi and Kawato, 1993; Graybiel et al., 1994; Jordan and Jacobs, 1994), and a modular selection and identification for control model (MOSAIC)...
Persistent link: https://www.econbiz.de/10011425022
A reconfigurable modular approach is proposed to construct a responsive manufacturing system to satisfy customers’ varied demand. In order to achieve this, the system employs a three-level control structure. We present the system’s dynamic behavior and optimal layout, as well as performance...
Persistent link: https://www.econbiz.de/10011425028
Persistent link: https://www.econbiz.de/10011425043