Based on the analysis of the reason of the false alarm and alarm failure of the automatic fire alarm system, the paper puts forward the countermeasures of product and design improvement of the alarm system.

There is a very high leaking and false alarm rate in general IDS.

This paper introduces three heads intelligent detector composing microwave detecting technology and single chip computer in order to solve infrared false alarm.

Experimental study on the false alarms of smoke fire detectors by cooking fumes;

Reducing false positive and false negative by correlation and risk assessment;

It analyzes the way how the IP address is segmented into overlapping fragments with Border Router Packet Marking and explains the method of reducing false positives and the cause of false positives generated in the process of address reconstruction.

The main problem of existing static vulnerability detection methods based source code analysis is their high false positive and false negative rates.