Error in 3_runCntk.py

[guangying94]

Hi, I followed the sequences shown in documentation, but I faced this error when I tried to execute 3_runCntk.py. After it loaded pre-trained model, this is the error I received.

Traceback (most recent call last):
File "3_runCntk.py", line 20, in
cntk_lr_per_image, cntk_l2_reg_weight, cntk_momentum_time_constant, cntkFilesDir, boSkipTraining)
File "D:\Marcus\CNTK\ObjectDetectionUsingCntk\helpers_cntk.py", line 102, in init_train_fast_rcnn
frcn_output, frcn_penultimateLayer = frcn_predictor(image_input, roi_input, num_classes, base_path)
File "D:\Marcus\CNTK\ObjectDetectionUsingCntk\helpers_cntk.py", line 77, in frcn_predictor
roi_out = roipooling(conv_out, rois, (roi_dim, roi_dim))
File "D:\Marcus\CNTK\Anaconda3\envs\cntk-py35\lib\site-packages\cntk\internal\swig_helper.py", line 69, in wrapper
result = f(*args, **kwds)
TypeError: roipooling() missing 2 required positional arguments: 'roi_output_shape' and 'spatial_scale'

How do I generate the required arguments?

I get the same errors any clue on how to generate these arguments

[PatrickBue]

Hi, what version of CNTK are you using? This might be due to breaking changes in version 2.2. Try 2.0 and this should hopefully fix this error.

[kpierce8]

Any hints on how to change the 2.2 scripts to work? I just spent hours getting CNTK set up on my machine and all the install information is now for 2.2.
Update: I reinstalled in a new python environment with 2.0 and finally it ran. Did need to update the parameters file variable svm_posweight on line 69 should to 'balanced' not 'auto'
This appears to be a change in the svm implementation.