We also compare of these clustering algorithms based on metrics such as convergence rate, cluster stability, cluster overlapping, location-awareness and support for node mobility.
The "high rate" cluster (i.e. the one giving the lowest overall dissatisfaction D) is then used as the basis to set new (default) policy thresholds (chacLow and chacHigh) and the whole process repeated.
The space-time permutation model identified 2 high rate clusters from January 2001 September 200202 and December 2006 December 200707, and 1 low rate cluster from January 2001 September 200202.
Results of the unadjusted Poisson space-time scan statistic identified 1 high rate cluster from January 2001 June 200404, and 1 low rate cluster from June 2004 to November 2007.
Results of the unadjusted Poisson space-time scan statistic identified 1 high rate cluster from July 2004 December 200707, and 1 low rate cluster from March 2002 August 200505.
The space-time permutation model identified 1 high rate cluster during Jan 2001 February 200303, and 2 low rate clusters during January 2001 February 200303 and February 2005 December 200707.
Results of the animal class adjusted space-time scan statistic identified 2 high rate clusters from August 2003 January 2007 and December 2006 Dec 20072007, and 1 low rate cluster from December 2001 May 200505.
Lastly, the space-time scan statistic using multi-level model residuals identified 3 high rate clusters during January 2001 March 200303, July 2003 June 2004 and January 2001 February 20032003, and 1 low rate cluster during January 2001 March 200303.
Results of the animal class adjusted space-time scan statistic identified 2 high rate clusters during January 2001 June 200404 and October 2001 to March 2005, and 1 low rate cluster during March 2004 August 200707.
The model-adjusted space-time scan statistic identified 1 high rate cluster during January 2001 March 200202 and 3 low rate clusters during March 2004 August 200707, January 2001 March 200303 and April 2005 November 200707.
