The accumulation of data and the usage of that data in catastrophe modeling is a delicate business.

Tom Larsen, senior vice president of catastrophe-risk modeler EQECAT Inc., says the firm strives to be on the leading edge and does so with continuous adaptations to models—in order to avoid becoming too disruptive with wholesale changes.

"You don't want to release something and say, 'Last year we told you to go left. Now we want you to go right,'" he tells NU.

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