The problem with L1-norm is that It may have more than one possible solution. And the test suite should probably take this into account. (And the test suite also needs some fixing.)
PS: It's probably why people usually prefer the L2-norm instead of L1,L3 or LN-norm.
Back to basics 11 - Max Integer
Let's do Markov Chains!
Find the jerk
Crossing to Kissing - Untangle the Lines
Algorithmic Trading - 1 (optimize simple trading strategy)
Algorithmic Trading - 3 (short selling and leverage)
Least Absolute Deviations (L1-norm) line fit - degree 1
Algorithmic Trading - 4 (two thresholds)
Function minimization - beat fminbnd!
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