How many bits must we send?
	• Model parameters: – It depends on the priors and how accurately they are sent. – Lets ignore these details for now • Codes: – If all n clusters are equiprobable, log n • This is extremely plausible, but wrong! – We can do it in less bits • This is extremely implausible but right. • Data misfits: – If sender & receiver assume a Gaussian distribution within the cluster, -log[p(d)|cluster] which depends on the squared distance of d from the cluster center.