{"article":{"id":"dupr-half-life-degradation","categoryId":"dupr-rating-analytics","categoryName":"DUPR Algorithms & Rating Analytics","index":2,"question":"What is the half-life degradation factor in DUPR ratings?","answer":"DUPR weights recent matches more heavily than older results, with older games losing half their statistical influence every several months.","answerDetail":"To prevent inactive players from sitting on stale ratings, DUPR applies an exponential decay function to historical match data. Matches played within the last 30 days exert maximum influence on a player's rating curve. As matches age past the half-life window, their mathematical weight in the algorithm decays exponentially, ensuring ratings reflect current competitive form.","intentTags":["dupr-rating-analytics","dupr","knowledge","standards"],"searchKeywords":["what is the half-life degradation factor in dupr ratings?","dupr half life degradation","dupr rating analytics"],"facilityTags":["testing-lab","regulation-court"],"serviceTags":["equipment-standards","player-ratings"],"environmentTags":["indoor","outdoor"],"structured":{"categoryId":"dupr-rating-analytics","topicIndex":2,"verifiedYear":2026},"lastVerified":"2026-09-20","canonicalUrl":"https://dink-digest.com/knowledge/dupr-half-life-degradation"},"discovery":{"canonicalUrl":"https://dink-digest.com/knowledge/dupr-half-life-degradation","hubUrl":"https://dink-digest.com/knowledge","categoryArticlesUrl":"https://dink-digest.com/api/knowledge?category=dupr-rating-analytics"}}