(Course directory: Class hour 1: free trial class hour 2: paid student service guide Class hour 3: lucene introduction Class hour 4: lucene index creation Class hour 2 (1) Class hour 4: lucene index creation Class hour 2 (2) Class hour 5: lucene index process analysis Class hour 3: lucene index optimization Class hour 4: lucene search Preliminary Class hour 5: lucene_ Query-6 SESSION 9: lucene boolean query-7 SESSION 10: lucene filter - 8 SESSION 11: lucene sorting - 9 SESSION 12: lucene word segmentation - 10)