端上智能在快手上下滑推薦取得APP時長+1%的應用實踐

{"type":"doc","content":[{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"1.背景"}]},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"1.1.端上智能"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"端上智能是相對於雲計算人工智能應用(如推薦、搜索)的概念：如工業界成熟的推薦系統方案，幾乎都是通過雲計算的算力，在海量候選集中搜索用戶感興趣的Feed，並通過複雜的精排模型(百億至千億級參數規模)將排序Top的Feeds列表發送給智能手機終端。智能手機終端在這個過程中，只是對雲端下發的Feeds列表進行渲染，收集用戶反饋進行上報，並沒有執行推薦算法。所有AI算法全都部署在雲端，智能手機通過網絡請求才能獲得雲端AI計算的結果。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"近些年智能手機等終端設備的算力有了顯著提升，這些算力足以支持一些中等規模的DNN模型進行推理與訓練，一些原本只能在雲端運行的AI模塊，可以部署在智能手機終端上，從而使得智能手機終端，在不依賴雲端的情況下，也可以進行獨立的AI計算。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"目前業內，手淘猜你喜歡在端上智能落地方面已有實踐，並取得較爲顯著收益(EdgeRec[1, 2], 雙十一ipv+10%, gmv+5%)。"}]},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"1.2.上下滑推薦"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"上下滑推薦，相對於傳統的Feeds流推薦，不再向用戶展示Feeds封面列表，每一屏直接展示一個Feeds詳情頁內容，用戶不能預知接下去展示的Feeds(見圖一)。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/resource\/image\/46\/26\/46e9193c52c3e2f72a8cec31836d8d26.png","alt":"image","title":null,"style":null,"href":null,"fromPaste":true,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":"center","origin":null},"content":[{"type":"text","text":"圖一: 封面瀑布流與上下滑"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}}]}