Status: Accepted Owner: ---- Labels: Type-Enhancement Priority-Medium Simplify
New issue 2719 by [email protected]: simplify() should take complexity measure argument
http://code.google.com/p/sympy/issues/detail?id=2719 Simplicity of expressions depends on the complexity measure taken, e.g.: In [1]: g = sin(x)**2 + cos(y)**2 In [2]: g Out[2]: 2 2 sin (x) + cos (y) In [3]: h = simplify(g) In [4]: h Out[4]: 2 2 sin (x) - sin (y) + 1 In [5]: g.count_ops() Out[5]: 5 In [6]: h.count_ops() Out[6]: 6 In [7]: measure = lambda u: len(set([ v.func for v in u.find(Function) ])) In [8]: measure(g) Out[8]: 2 In [9]: measure(h) Out[9]: 1 Here we have to simple complexity measures: 1) the number of operations (.count_ops()) 2) the number of distinct functions (measure()) It should be possible to issue:
simplify(g, measure=...)
(or similar) to get expressions in the desired "simple" form. -- You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en.
