import io, contextlib
目前该板块估值处于较低水平，其交易价格低于标普500指数的整体估值，且预计未来两年销售额年增长率将超过5%。人口老龄化与医疗需求持续上升的趋势，预计将使医疗器械及制药企业从中受益。
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\[\hat{s}= \sum_{k \in \mathcal{D}} k\,p(k).\]This produces a smooth score such as (5.4), rather than forcing the model to commit to a single sampled integer. In practice, this is substantially more stable than naive score sampling and better reflects the model’s uncertainty. It also handles cases where the judge distribution is broad or multimodal. For example, two candidates may both have mean score (5.4), while one has most of its mass tightly concentrated around (5) and (6), and the other splits mass between much lower and much higher ratings. The mean alone is the same, but the underlying judgement is very different.