scoring_breakdown:[{"source":"word_of_mouth","score":87.1,"weight":0.5,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍认为K5轻便易携带,按摩力度适中,热敷功能对缓解颈椎僵硬效果明显。部分用户反馈脉冲感在低档位较柔和,高档位对敏感皮肤略有刺激。整体好评集中在设计时尚、操作简单、送礼体面。差评多提及长时间使用后电极片粘性下降,以及APP连接偶尔不稳定。综合来看,适合日常办公族和轻度颈椎疲劳人群。","source_count":0}},{"source":"objective","score":92,"weight":0.1,"confidence":0.7,"details":{"dimension":"safety","rating_avg":4.6,"review_count":285000,"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":285000,"source":"product_reviews_aggregate"}},{"source":"expert","score":80.80000000000001,"weight":0.15,"confidence":0.4,"details":{"kol_count":2,"scored_count":2,"matched_count":0,"base_score":82,"weighted_score":80,"sample":["\"SKG K5是我用过最轻的颈椎按摩仪,戴着写稿一上午都不累。\"——科技博主@数码君","\"热敷+脉冲双管齐下,午休按15分钟,下午精神好很多。\"——健康达人@小鹿养生"]}}]