12. The method of claim 1, wherein: the predetermined event triggers include expiration of the dataset entry from the dataset access log and access of a cached dataset; and the representation of value comprises a zero if said occurred event trigger was caused by expiration of a dataset entry corresponding to the first dataset from the dataset access log, and a numerical representation of an imminence of future access of the first dataset in cache if said occurred event trigger was caused by access of the first dataset in cache.
12. The method of claim 1, wherein: the predetermined event triggers include expiration of the dataset entry from the dataset access log and access of a cached dataset; and the representation of value comprises a zero if said occurred event trigger was caused by expiration of a dataset entry corresponding to the first dataset from the dataset access log, and a numerical representation of an imminence of future access of the first dataset in cache if said occurred event trigger was caused by access of the first dataset in cache. 13. The method of claim 12, the operations further comprise ranking cached datasets relative to each other, comprising the following operations performed for cached dataset to be ranked: providing characteristics exhibited by the dataset at the first time as input to the neural network; the neural network providing an output comprising a representation of value provided by having the dataset present in the cache to satisfy future requests for access to the dataset; and ranking cached datasets according to the representations of value.