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Intgrad multiple inputs #321

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merged 18 commits into from
Dec 2, 2020
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gipster
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@gipster gipster commented Nov 25, 2020

Extends the integrated gradients method to model with multiple inputs. For each input of the model, attributions are calculated and returned in a list. Also extends the method allowing to calculate attributions for multiple internal layers. If a list of layers is passed, a list of attributions is returned.

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@gipster gipster linked an issue Nov 25, 2020 that may be closed by this pull request
@gipster gipster requested a review from jklaise November 25, 2020 10:34
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Thanks for the PR Giovanni, mostly minor things to fix.

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Comment on lines 326 to 332
def _calculate_sum_int(batches: List,
model: Union[tf.keras.Model, 'keras.Model'],
target: List,
target_paths: np.ndarray,
n_steps: int,
nb_samples: int,
step_sizes: List,
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Can we be more explicit about the types? Are these List[tf.Tensor] or List[List[tf.Tensor]]?

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codecov bot commented Dec 1, 2020

Codecov Report

Merging #321 (e8cfb6b) into master (f4b1aae) will decrease coverage by 0.00%.
The diff coverage is 91.37%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master     #321      +/-   ##
==========================================
- Coverage   86.08%   86.07%   -0.01%     
==========================================
  Files          56       56              
  Lines        7029     7155     +126     
==========================================
+ Hits         6051     6159     +108     
- Misses        978      996      +18     
Impacted Files Coverage Δ
alibi/explainers/integrated_gradients.py 89.95% <85.85%> (-1.07%) ⬇️
...libi/explainers/tests/test_integrated_gradients.py 99.37% <98.66%> (-0.63%) ⬇️
alibi/explainers/anchor_base.py 89.24% <0.00%> (-2.85%) ⬇️

@jklaise jklaise self-requested a review December 2, 2020 15:06
@jklaise jklaise merged commit b310d34 into SeldonIO:master Dec 2, 2020
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Integrated Gradient Explainer for multiple inputs
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