Beta Distribution Parameters by Individual Group.
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Beta distribution parameters for inter-big-attack sequences by individual terrorist group. Groups are rank-ordered according to their beta coefficient that represents the escalation in frequency of attacks prior to a big attack (defined as attacks resulting in 21 or more fatalities). The beta for fatalities represents the escalation in fatalities per attack prior to a big attack. The alphas represent de-escalation in frequency and fatalities following a big attack.
创建时间：
2014-04-22
