Abstract In this paper, an efficient approach to data validation of distributed geographical interlocking systems (IXLs) is presented. the IXL paradigm, track elements are controlled by local computers communicating with other control components over and wide area networks. The overall logic these track-side remote server that may even reside in one or more cloud farms. Redundancy introduced en...

a r t i c l e i n f o JEL classification: G12 F31 C32 Keywords: Time-varying integration Asian markets Risk premium ICAPM GDC-GARCH This article investigates the dynamics of regional financial integration and its determinants in an international setting. We test a conditional version of the International Capital Asset Pricing Model (ICAPM) accounting for the deviations from Purchasing Power Par...

The paper illustrates the results of a correlation study focusing on linguistic variation in an Italian region, Tuscany. By exploiting a multi-level representation scheme of dialectal data, the study analyses attested patterns of phonetic and morpho-lexical variation with the aim of testing the degree of correlation between a) phonetic and morpho-lexical variation, and b) linguistic variation a...

Humans tend to interpret a temporal series of geographical spatial data in terms of geographical processes. They also often ascribe certain properties to processes (e.g. a process may be said to accelerate). Given a spatial region of observation, distinct properties may be observed in different subregions and at different times, which causes difficulties for humans to identify them. The concept...

Classiication is a fundamental operation for data analysis and pattern discovery in Geographical Information Systems. It consists of forming clusters from a large set of data values for presentation in choroplethic maps. Strategies based on a measure of diversity of the values within a class provide a quantitative measure of the quality of the classiication but nding the classes requires (n 3) ...

This paper provides a methodology to assess the quality of generalised geographic data. Generalisation consists in representing in a simplified way a same geographic space, according to the scale and to the objectives of the map. The approach is based on (1) a data characterisation in its initial and final state at different level of analysis, (2) a data quality assessment from the comparison o...