Alternatives ...
Many models have been
proposed, but they have had weaknesses
•LogP
[UC Berkeley] is CTA+parameters
•The
model measures latency and other variables related to communication -- too many free
variables
•The model was effective at predicting behavior on the Thinking
Machines CM-5, which motivated it
•With
many parameters, it was difficult to decide which were significant,
especially when their values are free
•It
remains a model of theoretical interest
LogP’s parameters try being exact
about l. Not possible