We introduce a stochastic model which describes the information diffusion on the network of a popular web service, Twitter. Restricting our attention to the daily diffusion from a popular account, we model the information diffusion as a random multiplicative process. We justify our model by...

We explain a possible mechanism of an information spreading on a network which spreads extremely far from a seed node, namely the viral spreading. On the basis of a model of the information spreading in an online social network, in which the dynamics is expressed as a random multiplicative...

In this paper, we report an analysis of the protein sequence length distribution for 13 bacteria, four archaea and one eukaryote whose genomes have been completely sequenced. The frequency distribution of protein sequence length for all the 18 organisms are remarkably similar, independent of...

A random multiplicative process (RMP) is one of the basic models which can generate a power law distribution. Actually, the distribution generated by RMP has two parts, which are closely matched to the head of a log-normal distribution and the tail of a power law distribution. We investigated...

One class of universal mechanisms that generate power-law probability distributions is that of random multiplicative processes. In this paper, we consider a multiplicative Langevin equation driven by non-Gaussian colored multipliers. We analytically derive a formula that relates the power-law...

This study estimates the impact of changes in market returns and government payments on farmland values across Canada using data from 1959 to 2009. A recursive simultaneous equation model is estimated to account for the counter-cyclical relationship between market returns and government...

South Africa has made substantial progress in addressing the recommendations of the Financial Sector Assessment Program and is continuing to build upon these accomplishments. The Financial Services Board and Department of Trade and Industry both are organizations with the legal authority to...

Several studies have been employed to discuss the link between weather and market returns. However, our research is different in three ways. We employed in tropical country, added extreme condition, and covering the entire Indonesia weather proportionally. This paper revisits the weather-induced...

Some stylized facts for foreign exchange and stock market returns are explored using statistical methods. Formal statistics for testing presence of autocorrelation, asymmetry, and other deviations from normality are applied to these ?nancial returns. Dynamic correlations and di¤erent kernel...

This paper examines the time-series predictability of aggregate stock returns in twenty emerging markets. In contrast to the aggregate-level findings in the United States, earnings yield forecasts the time series of aggregate stock returns in emerging markets. We consider aggregate earnings not...