Method and device for detecting accuracy of weather forecast in high-error interval of fitting expression

• Main Authors: ZHOU BEI, HAO JIANGWEI, ZHANG ZUOYAN, XU JINCHEN
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; MEASURING; METEOROLOGY; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR; TESTING

The invention belongs to the technical field of weather forecast, and particularly relates to a weather forecast accuracy detection method and device for a fitting expression high error interval, and the method comprises the steps: extracting a floating point expression from a weather forecast application program, analyzing the floating point expression into an abstract syntax tree, and carrying out the analysis of the abstract syntax tree; generating an equivalent MPFR high-precision version program as a test oracle machine by using the abstract syntax tree; performing error detection on the initial cell of the floating point expression to obtain an error distribution diagram of the floating point expression in the cell; performing image processing on the error distribution map; performing DBSCAN clustering on the processed error distribution diagram and fitting an upper and lower bound polynomial function; deducing more high error intervals based on a polynomial function; performing error detection on each