[X射线-物相XRD-PDF4学习资料]-07：Data Mining Tools.pptx

Data Mining ToolsSorted Displays HistogramsSIeve Data MiningWhat?From Webopedia:A class of database applications that look for hidden patterns in a group of data that can be used to predict future behavior. The term is commonly misused to describe software that presents data in new ways.True data mining software doesnt just change the presentation,but actually discovers previously unknown relationships among the data.From Wikipedia:Data mining has been defined as the nontrivial extraction of implicit, previously unknown, and potentially useful information from dataand the science of extracting useful information from large data setsor databases. Data MiningWhy?The Powder Diffraction File (PDF) contains diffraction, crystallographic, bibliographic, physical property information on ~550,000 uniqu entries. This is the world’s largest collection structural and physical property information on solid states materials.Data mining can help scientist discover new information on how materials work. Data MiningHow?The Powder Diffraction File allows users to search by 48 different search mechanisms and then display data using 66 fields.The fields and display searches can be combined and sorted – providing almost limitless data mining combinations.Data can be graphed in xy plots or histograms.Multiple cards or diffraction patterns can be displayed simultaneously. Data MiningThis is the diffraction pattern taken from a specimen of a catalytic converter. In this tutorial, this pattern will be extensively analyzed.From this diffraction pattern you can identify the bulk composition and quantitate the results using modern X-ray analysis techniques.Using data mining of the PDF-4 database, you can determine solid solution doping, the temperature of synthesis for the part, and make reasonable assumptions about the identity and concentration oflow concentration catalysts present in the specimen.From the above data, you can find applicable patents on the Internet that align with the data