1. A method for finding a distributed computed solution for true positive rates and false positive rates comprising:receiving, by each computing device of a plurality of computing devices, a value defining a number of probability bins, wherein a plurality of unsorted records is distributed across the plurality of computing devices;

initializing, by each computing device of the plurality of computing devices, a true count value for each of the defined number of probability bins;

initializing, by each computing device of the plurality of computing devices, a false count value for each of the defined number of probability bins;

(a) reading, by a current computing device, a truth of event occurrence from a current record of a subset of the plurality of unsorted records stored on the current computing device;

(b) reading, by the current computing device, a probability of occurrence from the current record;

(c) determining, by the current computing device, a probability bin of the probability bins that includes the probability of occurrence;

(d) incrementing, by the current computing device, the true count value of the determined probability bin when the truth of event occurrence indicates true;

(e) incrementing, by the current computing device, the false count value of the determined probability bin when the truth of event occurrence indicates false;

(f) repeating (a) to (e) with each record of the subset of the plurality of unsorted records stored on the current computing device as the current record;

(g) after processing the subset of the plurality of unsorted records stored on the current computing device, sending, by the current computing device, the true count value and the false count value for each probability bin of the probability bins to a master computing device,

wherein (a) to (g) is performed by each computing device of the plurality of computing devices as the current computing device;

receiving, by the master computing device, the true count value and the false count value for each probability bin of the probability bins from each computing device of the plurality of computing devices;

determining, by the master computing device, a total number of true event occurrences;

determining, by the master computing device, a total number of false event occurrences;

computing, by the master computing device, a true positive rate for each probability bin of the probability bins based on the true count value of the probability bin and the determined total number of true event occurrences;

computing, by the master computing device, a false positive rate for each probability bin of the probability bins based on the false count value of the probability bin and the determined total number of false event occurrences; and

outputting, by the master computing device, the true positive rate and the false positive rate for each probability bin of the probability bins for selection of an operating point to determine occurrence of an event.