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Homogenous Groups — discovering items that recur together.

Two complementary capabilities:

• Duplication detection — find and remove the largest repeated contiguous blocks in an ordered sequence (e.g. de-duplicate repeated line-blocks in text) via deduplicate_string_lines(), deduplicate_sequence(), and BlockDeduplicator.

• Frequent-itemset mining — find sets of items that co-occur across transactions, optionally weighted by a per-transaction value, via find_frequent_itemsets().