online versions are augmented with in-house web search, indexing, and crawling infrastructure with search index being large, updated on a regular cadence, and uses sophisticated ranking algorithms to ensure high quality, non-SEOed sites are prioritized, while website excerpts, they call “snippets”, are provided to their pplx-online models to enable responses with the most up-to-date information. These are then continually fine tuned to achieve high performance on various axes like helpfulness, factuality, and freshness
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