Fisher Kernel

The Fisher kernel is defined as


K(X_i, X_j) = U_{X_i}^T I^{-1} U_{X_j}

with I the Fisher information matrix.

Famous quotes containing the words fisher and/or kernel:

    I know only one person who ever crossed the ocean without feeling it, either spiritually or physically.... he went from Oklahoma to France and back again ... without ever getting off dry land. He remembers several places I remember too, and several French words, but he says firmly, “We must of went different ways. I don’t rightly recollect no water, ever.”
    —M.F.K. Fisher (1908–1992)

    After night’s thunder far away had rolled
    The fiery day had a kernel sweet of cold
    Edward Thomas (1878–1917)