
TABLE I.
GROUNDWATER TABLE IN GEOLOGICAL DISASTERS DATABASE (MM)

Figure 1.
TABLE. I corresponds to the inverted index map(IIP)

Figure 2.
Order three of the B+ tree

TABLE II.
UPDATE THE RECORD DATA (MM)

Figure 3.
Inverted index tree of updated data

Figure 4.
Flow chart of incremental index updating algorithm of inverted index tree mining

TABLE III.
IUAR, IITREE ALGORITHM TO RUN THE EXPERIMENTAL TIME(S)

Figure 5.
Algorithms time comparison for IUAR and II Tree

Figure 6.
Memory usage comparison

TABLE IV.
DISASTER MONITORING DATA TO BOOLEAN DATA CONVERSION TABLE