| 摘要 |
<p>A change analysis system (29) for a time series dataset (45), the system comprising: an error profiling module (31) configured to determine errors in a historical set of data; said historical set of data (43) comprising a plurality of measurements taken at spatially distributed test locations over a period of time, and output an analytical model of said errors; a spatial correlation quantification module (33) configured to determine a spatial correlation among the test locations in said historical set of data (43), and output an analytical model of said spatial correlations; a target function construction module (37) configured to construct from said error model (31) and said spatial correlation model (33), an analytical function representing a probability of change in said time series dataset (45); an optimisation module (39) configured to determine a fit for said constructed analytical function to said time series dataset (45), and output a change model for the analysed time series dataset; and a reporting module (41) configured to generate from said change model a report concerning changes in said analysed dataset.</p> |
