saliency-faithfulness-eval

A suite of tests to assess attention faithfulness for explainability. This code is used in the paper Evaluating the Faithfulness of Saliency-based Explanations for Deep Learning Models for Temporal Colour Constancy, published in the proceedings of the 2022 XAI workshop on XAI.

Support

Tests for Faithfulness Evaluation

ID	Code	What is tested?	Reference
acc	WP1	Impact of attention on accuracy	[4]
mlp	WP2	Impact on the accuracy of using attention to guide non-contextual MLP model	[4]
adv	WP3	Impact on predictions of adversarial attention distributions	[2, 4]
ers (single)	SS1	Impact on predictions of single weights erasure	[3]
ers (multi)	SS2	Impact on predictions groups of weights erasure	[3]
rand_params	A1	Impact on attention weights of model parameters randomization	[1]
rand_labels	A2	Impact on attention weights of training labels randomization	[1]

1. Adebayo et al., “Sanity Checks for Saliency Maps”, NIPS ( 2018) [ Paper - Code ]
2. Jain & Wallace, “Attention is not Explanation”, NAACL ( 2019) [ Paper - Code ]
3. Serrano & Smith, “Is Attention Interpretable?”, ACL ( 2019) [ Paper - Code ]
4. Wiegreffe & Pinter, “Attention is not not Explanation”, EMNLP ( 2019) [ Paper - Code ]

Tasks

• Color Constancy
• Temporal Color Constancy (TCC)

Datasets

• TCC: TCC, presented in Qian et al. “A Benchmark for Temporal Color Constancy” ArXiv ( 2020) [Paper - Code]. The dataset can be downloaded at www.cs.ubc.ca/research/tcc/

Running the code

Installation

The code has been developed and tested on Ubuntu 20.10 using Python3.9 and some functionalities introduced in torch 1.9.0. Please install the required Python packages listed in requirements.txt. Using a virtualenv is not compulsory but strongly advised.

Configuring the dataset

Paths to the dataset are relative to a base path configurable inside auxiliary/settings.py via the PATH_TO_DATASET = path/to/dataset folder. Please ensure the desired dataset is stored at that path under a folder named coherently with the paths used inside the user-defined PyTorch dataset class. For example, the TCC dataset implementation at classes/tasks/ccc/multiframe/data/TCC.py refers to a folder named tcc, which should be found at path/to/dataset/color_checker.

Tests

All tests can be run from the shell using the scripts (.sh files) into the eval/tests subdirectories. Each script allows for multiple configuration options that can be edited within the file and are thereby described.

WP1: Accuracy of learned vs. uniform saliency

1. Run python3 eval/tests/acc/acc_test.sh to measure the impact on accuracy of using learned attention weights versus random attention weights

WP3: Training an adversarial saliency model

1. Run python3 eval/tests/adv/variance_test.sh to train the models with multiple random seeds. This step is optional but strongly advised
2. Run python3 eval/tests/adv/adv_test.sh to train the adversarial attention models
3. Run python3 eval/analysis/adv/adv_analysis.sh to analyze the test output data

WP2: Saliency-guided MLP model

1. Run python3 eval/tests/mlp/mlp_test.sh to train the MLP models either guided by imposed attention weights, learning their attention weights, or not using attention at all

SS1-SS2: Erasing saliency weights

1. Run python3 eval/tests/ers/save_grads.sh to save the attention gradients of each model at test time. These values will be used to ground the gradient-based criteria for the multi-weight erasure
2. Run python3 eval/tests/ers/erasure.sh to run either the single or the multi-weight erasure
3. Run python3 eval/analysis/ers/ers_analysis.sh to analyze the test output data

A1-A2: Parameters' and input labels' randomization

• Run python3 eval/tests/ers/rand_params_test.sh to run the parameters' randomization test
• Run python3 eval/tests/ers/rand_labels_test.sh to run the labels' randomization test