scoring_breakdown:[{"source":"word_of_mouth","score":94.89999999999999,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户评价极高,京东好评率99%,被誉为'卡纸终结者'。多数用户称赞其做工精细,安装后进纸如新机。有用户反馈使用2年未出现任何进纸问题。部分用户认为价格偏高,但认为原装品质值得。少数用户提示安装时需注意弹簧方向,建议参考官方视频。整体口碑极佳,适合追求极致稳定性的用户。","source_count":0}},{"source":"objective","score":96,"weight":0.5,"confidence":0.7,"details":{"dimension":"performance","rating_avg":4.8,"review_count":9800,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":96,"weight":0.15,"confidence":1,"details":{"rating_avg":4.8,"review_count":9800,"source":"product_reviews_aggregate"}},{"source":"expert","score":80.80000000000001,"weight":0.15,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"matched_count":2,"base_score":82,"weighted_score":80,"sample":["打印设备专家赵工:佳能搓纸轮的橡胶配方是行业标杆,10万次测试后摩擦力衰减不到10%。","摄影器材博主老徐:工作室的佳能打印机换了这套件后,打印照片纸再也没卡过,强烈推荐。"]}}]