I am using theano-0.9 The error message is as follows.
*Traceback (most recent call last): File "test.py", line 16, in <module> TH,updates = theano.scan(lambda i: T.hessian(v[i], x), sequences=T.arange(v.shape[0])) File "/Library/Python/2.7/site-packages/theano/scan_module/scan.py", line 773, in scan condition, outputs, updates = scan_utils.get_updates_and_outputs(fn(*args)) File "test.py", line 16, in <lambda> TH,updates = theano.scan(lambda i: T.hessian(v[i], x), sequences=T.arange(v.shape[0])) File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1888, in hessian non_sequences=[expr, input]) File "/Library/Python/2.7/site-packages/theano/scan_module/scan.py", line 773, in scan condition, outputs, updates = scan_utils.get_updates_and_outputs(fn(*args)) File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1886, in <lambda> disconnected_inputs='ignore'), File "/Library/Python/2.7/site-packages/theano/gradient.py", line 555, in grad grad_dict, wrt, cost_name) File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1317, in _populate_grad_dict rval = [access_grad_cache(elem) for elem in wrt] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1272, in access_grad_cache term = access_term_cache(node)[idx] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 967, in access_term_cache output_grads = [access_grad_cache(var) for var in node.outputs] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1272, in access_grad_cache term = access_term_cache(node)[idx] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 967, in access_term_cache output_grads = [access_grad_cache(var) for var in node.outputs] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1272, in access_grad_cache term = access_term_cache(node)[idx] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 967, in access_term_cache output_grads = [access_grad_cache(var) for var in node.outputs] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1272, in access_grad_cache term = access_term_cache(node)[idx] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 967, in access_term_cache output_grads = [access_grad_cache(var) for var in node.outputs] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1272, in access_grad_cache term = access_term_cache(node)[idx] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 967, in access_term_cache output_grads = [access_grad_cache(var) for var in node.outputs] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1272, in access_grad_cache term = access_term_cache(node)[idx] File "/Library/Python/2.7/site-packages/theano/gradient.py", line 1108, in access_term_cache new_output_grads) File "/Library/Python/2.7/site-packages/theano/gof/op.py", line 711, in L_op return self.grad(inputs, output_grads)AttributeError: 'EighGrad' object has no attribute 'grad'* -- --- You received this message because you are subscribed to the Google Groups "theano-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to theano-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
