2. criminal case the basic theory of hot spots identified
2.1. The Concept of Hotspots of Criminal Cases
Hot spots of criminal cases (Criminal Cases Hotspot) is the high crime geographic area [4], is often
many times the geographical area criminal offense occurred, is a criminal offense gather geographical
area. Hot-related criminal cases is more extensive comparisons of the geographical area, through such a
comparison can be demonstrated in the high incidence of drug cases in the region (on many occasions,
aggregation occurs). So hot in criminal cases is a relative concept, rather than criminal cases is relatively
cold (Cold Spots). Criminal cases, criminal cases, cold and hot there is no strict division between the
standards described in different ways in different hot region of space, we explore the GIS map of hot
spots for the definition of a criminal case. The location of criminal cases can occur in the GIS projection
and coordinate system for accurate description, this is the next step based on spatial analysis.