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FIX: Import scipy.sparse.linalg #482

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Merged
oyamad merged 1 commit into from
Apr 20, 2019
Merged

FIX: Import scipy.sparse.linalg #482

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3 changes: 2 additions & 1 deletion quantecon/markov/ddp.py
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Original file line number Diff line number Diff line change
Expand Up @@ -417,7 +417,8 @@ def s_wise_max(vals, out=None, out_argmax=None):

# Linear equation solver to be used in evaluate_policy
if self._sparse:
self._lineq_solve = sp.linalg.spsolve
import scipy.sparse.linalg
self._lineq_solve = scipy.sparse.linalg.spsolve
self._I = sp.identity(self.num_states, format='csr')
else:
self._lineq_solve = np.linalg.solve
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