  We outline an algorithm to recover the canonical (or, coarsest)
stratification of a given finite-dimensional regular CW complex into cohomology
manifolds, each of which is a union of cells. The construction proceeds by
iteratively localizing the poset of cells about a family of subposets; these
subposets are in turn determined by a collection of cosheaves which capture
variations in cohomology of cellular neighborhoods across the underlying
complex. The result is a nested sequence of categories, each containing all the
cells as its set of objects, with the property that two cells are isomorphic in
the last category if and only if they lie in the same canonical stratum. The
entire process is amenable to efficient distributed computation.
