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Paper·arxiv.org
machine-learningresearchevaluationsecuritydata-pipelines

How to sketch a learning algorithm

Training data fundamentally shapes AI model behavior, interpretability, and privacy. The 'data deletion problem' addresses efficiently predicting model changes after data removal, crucial for building robust, ethical AI systems.

intermediateseveral hours to ongoing5 steps
The play
  1. Map Training Data Influence
    Understand how individual data points or subsets impact your model's predictions, performance, and learned biases. This involves exploring techniques like influence functions or data attribution methods.
  2. Identify Critical Data Subsets
    Pinpoint data points or groups that disproportionately affect model interpretability, fairness, or compliance with privacy regulations (e.g., GDPR, CCPA) if they were to be removed or altered.
  3. Explore Data Deletion Simulation Techniques
    Investigate methods for efficiently predicting model behavior post-data removal without requiring a full model retraining. This includes studying approximate re-training, influence estimation, or model unlearning algorithms.
  4. Implement Data Curation Best Practices
    Establish meticulous processes for data collection, labeling, cleaning, and management throughout the machine learning lifecycle to reduce bias and improve model robustness and transparency.
  5. Document Data Provenance and Usage
    Maintain clear, auditable records of data sources, transformations, and how specific datasets were used in model training. This supports accountability and ethical AI development.
Starter code
import pandas as pd
from sklearn.model_selection import train_test_split
from sklearn.linear_model import LogisticRegression
from sklearn.metrics import accuracy_score

# Sample data (replace with your actual dataset)
data = {'feature1': [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
        'feature2': [10, 9, 8, 7, 6, 5, 4, 3, 2, 1],
        'target': [0, 0, 0, 0, 1, 1, 1, 1, 1, 1]}
df = pd.DataFrame(data)

X = df[['feature1', 'feature2']]
y = df['target']

X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)

# Train a basic model
model = LogisticRegression()
model.fit(X_train, y_train)

predictions = model.predict(X_test)
print(f"Initial Model Accuracy: {accuracy_score(y_test, predictions)}")

# Placeholder: Consider how removing a specific row from X_train (e.g., index 0)
# would affect this model's accuracy or predictions. This is the 'data deletion problem'.
# For example, to simulate removal:
# X_train_deleted = X_train.drop(X_train.index[0])
# y_train_deleted = y_train.drop(y_train.index[0])
# model_deleted = LogisticRegression().fit(X_train_deleted, y_train_deleted)
# print(f"Accuracy after deleting a data point: {accuracy_score(y_test, model_deleted.predict(X_test))}")
Source
How to sketch a learning algorithm — Action Pack