Definitions for "Hessian "
A native or inhabitant of Hesse.
A mercenary or venal person.
No, not a German mercenary or native of Hesse. In this instance, hessian is referring to a coarse sack cloth made from hemp.
Of or relating to Hesse, in Germany, or to the Hessians.
See Hessian boots and cloth, under Hessian, a.
(19th century) a man's high tasseled boot
The matrix of second partial derivatives of a function (assumed to be twice differentiable). This is often denoted H_f(x), where f is the function and x is a point in its domain.
The matrix containing all of the second partial derivatives of the cost function, , with respect to the control variables. Element of the Hessian is (see Eq. (8)).
Matrix of mass normalized 2nd derivatives of energy with respect to nuclear displacement in Cartesian coordinates. Diagonalized to determine normal modes & calculate vibrational frequencies.
Keywords:  binary, suited, usable, soup, alphabet
Hessian is a compact binary Web services protocol, suited for applications which need a more compact wire-protocol than XML-based Web services. The project is an open-source implementation of a Java server and client for the Hessian protocol.
Hessian is a binary web service protocol that makes web services usable without requiring a large framework, and without learning yet another alphabet soup of protocols. Because it is a binary protocol, it is well-suited to sending binary data without any need to extend the protocol with attachments.