What challenges might arise when using Hierarchical Clustering on very large datasets?
- Computationally intensive and requires high memory
- Less accurate and requires more hyperparameters
- Less sensitive to distance metrics and more prone to noise
- Prone to overfitting and less interpretable
Hierarchical Clustering can be computationally intensive and require a lot of memory, especially when dealing with very large datasets. The algorithm has to compute and store a distance matrix, which has a size of O(n^2), where n is the number of data points. This can lead to challenges in computational efficiency and memory usage, making it less suitable for large-scale applications.
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