liblbfgs-dev binary package in Ubuntu Xenial amd64

 Solves nonlinear optimization problems using the limited-memory BFGS method.
 The user specifies a callback C function that returns the value and gradients
 of the cost function at a particular operating point. This library estimates
 the Hessians from user input, and applies Newton's method iteratively to find a
 local minimum of the cost function. This is a small library, written in C with
 minimal dependencies.
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 This package contains development files

Source package