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Block WAND works by maintaining an upper bound on how much score any document within a block of document IDs could possibly achieve. As the engine fills its Top K heap, it establishes a threshold: the lowest score currently in the heap. Before evaluating a block, the engine checks the block’s maximum score. If that maximum is below the threshold, the entire block is skipped without scoring individual documents.
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黎智英欺詐案上訴得直：定罪及刑罰被撤銷，出獄時間提前
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