scoring_breakdown:[{"source":"word_of_mouth","score":87.1,"weight":0.5,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户评价集中在\"性价比极高\",百元价位实现多维度测量,数据稳定性好。米家App生态完善,数据记录方便。部分用户指出电极片面积较小,脚部湿润时测量偶有偏差。整体满意度高,适合预算有限但追求基础健康监测的消费者。","source_count":2}},{"source":"objective","score":92,"weight":0.1,"confidence":0.7,"details":{"dimension":"safety","rating_avg":4.6,"review_count":120000,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":92,"weight":0.25,"confidence":1,"details":{"rating_avg":4.6,"review_count":120000,"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":["@爱生活的马克:99元能测13项数据,还要什么自行车?","@科技圈小透明:小米体脂秤2是入门级体脂秤的标杆产品。"]}}]