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# Необходмые команды импорта.
import sys
#import os
sys.path.append('../physlearn/')
sys.path.append('../source')
import numpy as np
from numpy import linalg as LA
import tensorflow as tf
from matplotlib import pylab as plt
from IPython.display import clear_output
import math_util
%matplotlib inline
# Model Parameters

m = 1500 # размер сеток обучения
M = 4 # количество выходных нейронов(базисных функций)
a = -15
b = 15
x_grid = np.linspace(a, b, m, endpoint=True).reshape(1, m)

sess = tf.Session()
x = tf.placeholder(tf.double)
w = tf.Variable([1,1,1,1], dtype=tf.double)
trial_func = [w[0]*tf.sin(x), w[1]*tf.cos(x), w[2]*tf.sin(2*x), w[3]*tf.cos(5*x)]
y_set = [1*tf.sin(x), 0*tf.cos(x), 2.5*tf.sin(2*x), -7.1*tf.cos(5*x)]
#func_sum = tf.reduce_sum(input_tensor=trial_func, axis=0)
sess.run(tf.initializers.global_variables(), {x:x_grid})




#first_deriative = tf.gradients(trial_func, x)[0]

#images = tf.gradients(first_deriative, x)[0]
#images_sum = tf.reduce_sum(input_tensor=images, axis=0)


    

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bas_mat = sess.run(trial_func, {x:x_grid})


    

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plt.plot(np.transpose(x_grid), np.transpose(bas_mat[1]))


    

    
Out[9]:





[<matplotlib.lines.Line2D at 0x2a7eb180d68>]






    

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A = tf.transpose(trial_func)
A_T = trial_func

y = tf.reduce_sum(input_tensor=y_set, axis=0)
y = tf.expand_dims(y, -1)
omega = tf.matmul(tf.matmul(tf.matrix_inverse(tf.matmul(A_T, A)), A_T), y)
regression_fit = tf.matmul(tf.transpose(trial_func), omega)
noninvariance_factor = (1 / m) * tf.reduce_sum(tf.square(y - regression_fit))


    

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sess.run(omega, {x:x_grid})


    

    




---------------------------------------------------------------------------
InvalidArgumentError                      Traceback (most recent call last)
D:\Anaconda\lib\site-packages\tensorflow\python\client\session.py in _do_call(self, fn, *args)
   1277     try:
-> 1278       return fn(*args)
   1279     except errors.OpError as e:

D:\Anaconda\lib\site-packages\tensorflow\python\client\session.py in _run_fn(feed_dict, fetch_list, target_list, options, run_metadata)
   1262       return self._call_tf_sessionrun(
-> 1263           options, feed_dict, fetch_list, target_list, run_metadata)
   1264 

D:\Anaconda\lib\site-packages\tensorflow\python\client\session.py in _call_tf_sessionrun(self, options, feed_dict, fetch_list, target_list, run_metadata)
   1349         self._session, options, feed_dict, fetch_list, target_list,
-> 1350         run_metadata)
   1351 

InvalidArgumentError: You must feed a value for placeholder tensor 'Placeholder_2' with dtype double
	 [[Node: Placeholder_2 = Placeholder[dtype=DT_DOUBLE, shape=<unknown>, _device="/job:localhost/replica:0/task:0/device:CPU:0"]()]]

During handling of the above exception, another exception occurred:

InvalidArgumentError                      Traceback (most recent call last)
<ipython-input-17-e6bf4df54093> in <module>()
----> 1 sess.run(omega, {x:x_grid})

D:\Anaconda\lib\site-packages\tensorflow\python\client\session.py in run(self, fetches, feed_dict, options, run_metadata)
    875     try:
    876       result = self._run(None, fetches, feed_dict, options_ptr,
--> 877                          run_metadata_ptr)
    878       if run_metadata:
    879         proto_data = tf_session.TF_GetBuffer(run_metadata_ptr)

D:\Anaconda\lib\site-packages\tensorflow\python\client\session.py in _run(self, handle, fetches, feed_dict, options, run_metadata)
   1098     if final_fetches or final_targets or (handle and feed_dict_tensor):
   1099       results = self._do_run(handle, final_targets, final_fetches,
-> 1100                              feed_dict_tensor, options, run_metadata)
   1101     else:
   1102       results = []

D:\Anaconda\lib\site-packages\tensorflow\python\client\session.py in _do_run(self, handle, target_list, fetch_list, feed_dict, options, run_metadata)
   1270     if handle is None:
   1271       return self._do_call(_run_fn, feeds, fetches, targets, options,
-> 1272                            run_metadata)
   1273     else:
   1274       return self._do_call(_prun_fn, handle, feeds, fetches)

D:\Anaconda\lib\site-packages\tensorflow\python\client\session.py in _do_call(self, fn, *args)
   1289         except KeyError:
   1290           pass
-> 1291       raise type(e)(node_def, op, message)
   1292 
   1293   def _extend_graph(self):

InvalidArgumentError: You must feed a value for placeholder tensor 'Placeholder_2' with dtype double
	 [[Node: Placeholder_2 = Placeholder[dtype=DT_DOUBLE, shape=<unknown>, _device="/job:localhost/replica:0/task:0/device:CPU:0"]()]]

Caused by op 'Placeholder_2', defined at:
  File "D:\Anaconda\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "D:\Anaconda\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "D:\Anaconda\lib\site-packages\ipykernel_launcher.py", line 16, in <module>
    app.launch_new_instance()
  File "D:\Anaconda\lib\site-packages\traitlets\config\application.py", line 658, in launch_instance
    app.start()
  File "D:\Anaconda\lib\site-packages\ipykernel\kernelapp.py", line 486, in start
    self.io_loop.start()
  File "D:\Anaconda\lib\site-packages\tornado\platform\asyncio.py", line 127, in start
    self.asyncio_loop.run_forever()
  File "D:\Anaconda\lib\asyncio\base_events.py", line 422, in run_forever
    self._run_once()
  File "D:\Anaconda\lib\asyncio\base_events.py", line 1432, in _run_once
    handle._run()
  File "D:\Anaconda\lib\asyncio\events.py", line 145, in _run
    self._callback(*self._args)
  File "D:\Anaconda\lib\site-packages\tornado\platform\asyncio.py", line 117, in _handle_events
    handler_func(fileobj, events)
  File "D:\Anaconda\lib\site-packages\tornado\stack_context.py", line 276, in null_wrapper
    return fn(*args, **kwargs)
  File "D:\Anaconda\lib\site-packages\zmq\eventloop\zmqstream.py", line 450, in _handle_events
    self._handle_recv()
  File "D:\Anaconda\lib\site-packages\zmq\eventloop\zmqstream.py", line 480, in _handle_recv
    self._run_callback(callback, msg)
  File "D:\Anaconda\lib\site-packages\zmq\eventloop\zmqstream.py", line 432, in _run_callback
    callback(*args, **kwargs)
  File "D:\Anaconda\lib\site-packages\tornado\stack_context.py", line 276, in null_wrapper
    return fn(*args, **kwargs)
  File "D:\Anaconda\lib\site-packages\ipykernel\kernelbase.py", line 283, in dispatcher
    return self.dispatch_shell(stream, msg)
  File "D:\Anaconda\lib\site-packages\ipykernel\kernelbase.py", line 233, in dispatch_shell
    handler(stream, idents, msg)
  File "D:\Anaconda\lib\site-packages\ipykernel\kernelbase.py", line 399, in execute_request
    user_expressions, allow_stdin)
  File "D:\Anaconda\lib\site-packages\ipykernel\ipkernel.py", line 208, in do_execute
    res = shell.run_cell(code, store_history=store_history, silent=silent)
  File "D:\Anaconda\lib\site-packages\ipykernel\zmqshell.py", line 537, in run_cell
    return super(ZMQInteractiveShell, self).run_cell(*args, **kwargs)
  File "D:\Anaconda\lib\site-packages\IPython\core\interactiveshell.py", line 2662, in run_cell
    raw_cell, store_history, silent, shell_futures)
  File "D:\Anaconda\lib\site-packages\IPython\core\interactiveshell.py", line 2785, in _run_cell
    interactivity=interactivity, compiler=compiler, result=result)
  File "D:\Anaconda\lib\site-packages\IPython\core\interactiveshell.py", line 2903, in run_ast_nodes
    if self.run_code(code, result):
  File "D:\Anaconda\lib\site-packages\IPython\core\interactiveshell.py", line 2963, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-3-9faf01f516cc>", line 22, in <module>
    x = tf.placeholder(tf.double)
  File "D:\Anaconda\lib\site-packages\tensorflow\python\ops\array_ops.py", line 1735, in placeholder
    return gen_array_ops.placeholder(dtype=dtype, shape=shape, name=name)
  File "D:\Anaconda\lib\site-packages\tensorflow\python\ops\gen_array_ops.py", line 4924, in placeholder
    "Placeholder", dtype=dtype, shape=shape, name=name)
  File "D:\Anaconda\lib\site-packages\tensorflow\python\framework\op_def_library.py", line 787, in _apply_op_helper
    op_def=op_def)
  File "D:\Anaconda\lib\site-packages\tensorflow\python\util\deprecation.py", line 454, in new_func
    return func(*args, **kwargs)
  File "D:\Anaconda\lib\site-packages\tensorflow\python\framework\ops.py", line 3155, in create_op
    op_def=op_def)
  File "D:\Anaconda\lib\site-packages\tensorflow\python\framework\ops.py", line 1717, in __init__
    self._traceback = tf_stack.extract_stack()

InvalidArgumentError (see above for traceback): You must feed a value for placeholder tensor 'Placeholder_2' with dtype double
	 [[Node: Placeholder_2 = Placeholder[dtype=DT_DOUBLE, shape=<unknown>, _device="/job:localhost/replica:0/task:0/device:CPU:0"]()]]

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