Suppose you have joined a search engine development

Suppose you have joined a search engine development team to design a search algorithm based
on both the Vector model and the Boolean model.
You have collected the following documents (unstructured) and plan to apply an index
technique to convert them into an inverted index.
Doc 1:data science is field to use scientific method, process, algorithm, system to extract
knowledge.
Doc 2:data mining is the process to discover pattern in large data to involve method at the
database system.
Doc 3:information system is the study of network of hardware and software that people use