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31 changes: 31 additions & 0 deletions kerasmodel/kerasmodel.py
Original file line number Diff line number Diff line change
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import sklearn.base
from tensorflow import keras
class XAIWrapper:
def __init__(self, model):
if isinstance(model, sklearn.base.BaseEstimator):
self.model_type = 'sklearn'
self.model = model
elif isinstance(model, keras.models.Model):
self.model_type = 'keras'
self.model = model
else:
raise ValueError("Unsupported model type")

def feature_importance(self, X, y, **kwargs):
if self.model_type == 'sklearn':
# existing implementation for scikit-learn models
pass
elif self.model_type == 'keras':
# get the input layer shape
input_shape = self.model.input_shape[1:]
# get the layer weights
layer_weights = self.model.get_weights()
# compute feature importance using Keras-specific API
feature_importance = self._compute_feature_importance_keras(X, y, input_shape, layer_weights, **kwargs)
return feature_importance

def _compute_feature_importance_keras(self, X, y, input_shape, layer_weights, **kwargs):
# implement Keras-specific feature importance computation
pass

# other explainability methods...
89 changes: 89 additions & 0 deletions kerasmodel/requirements,txt
Original file line number Diff line number Diff line change
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# Step 1: Modify XAIWrapper to accept and handle Keras model objects

# To achieve this, we need to make the following changes to the XAIWrapper class:

# Update the __init__ method to accept a Keras model object as an argument.
# Add a check to determine whether the input model is a scikit-learn model or a Keras model.
# Store the Keras model object as an instance variable.
# Here's the modified __init__ method:

# python

# Edit
# Copy code
def __init__(self, model):
if isinstance(model, sklearn.base.BaseEstimator):
self.model_type = 'sklearn'
self.model = model
elif isinstance(model, keras.models.Model):
self.model_type = 'keras'
self.model = model
else:
raise ValueError("Unsupported model type")
# Step 2: Adapt existing explainability methods for Keras models where possible

# We need to modify the existing explainability methods to work with Keras models. This may involve:

# Updating the method signatures to accept Keras-specific arguments (e.g., layer names, input shapes).
# Using Keras-specific APIs to extract information from the model (e.g., layer weights, activations).
# Adapting the explanation algorithms to work with Keras models.
# Let's take the example of the feature_importance method. We can modify it as follows:

# python

# Edit
# Copy code
def feature_importance(self, X, y, **kwargs):
if self.model_type == 'sklearn':
# existing implementation for scikit-learn models
pass
elif self.model_type == 'keras':
# get the input layer shape
input_shape = self.model.input_shape[1:]
# get the layer weights
layer_weights = self.model.get_weights()
# compute feature importance using Keras-specific API
feature_importance = self._compute_feature_importance_keras(X, y, input_shape, layer_weights, **kwargs)
return feature_importance

def _compute_feature_importance_keras(self, X, y, input_shape, layer_weights, **kwargs):
# implement Keras-specific feature importance computation
pass
# Complete Solution

# Here's the complete solution:


import sklearn.base
from tensorflow import keras

class XAIWrapper:
def __init__(self, model):
if isinstance(model, sklearn.base.BaseEstimator):
self.model_type = 'sklearn'
self.model = model
elif isinstance(model, keras.models.Model):
self.model_type = 'keras'
self.model = model
else:
raise ValueError("Unsupported model type")

def feature_importance(self, X, y, **kwargs):
if self.model_type == 'sklearn':
# existing implementation for scikit-learn models
pass
elif self.model_type == 'keras':
# get the input layer shape
input_shape = self.model.input_shape[1:]
# get the layer weights
layer_weights = self.model.get_weights()
# compute feature importance using Keras-specific API
feature_importance = self._compute_feature_importance_keras(X, y, input_shape, layer_weights, **kwargs)
return feature_importance

def _compute_feature_importance_keras(self, X, y, input_shape, layer_weights, **kwargs):
# implement Keras-specific feature importance computation
pass

# other explainability methods...
# Note that this is just a starting point, and you'll need to implement the Keras-specific logic for each explainability method. Additionally, you may need to add more error handling and edge cases depending on your specific use case.