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新疆丝瓜藓属 ( lt;em gt;Pohlia lt; em gt; Hedw. )的分类学修订 通过分析各个种的识别特征、与相近种的区别和生境,编制了新疆丝瓜藓属分种检索表。 关键词: 丝瓜藓属 (Pohlia Hedw ), 检索表, 修订, 植物生态, 新疆 Abstract: The phylogenetic position of the genus Pohlia Hedw is uncertain yet Traditionally, the genus was placed in the subfamilies Bryoideae or Pohlioideae of generalized family Bryaceae (sensu lato)
[1809. 11008] SIGUA: Forgetting May Make Learning with Noisy Labels More Robust - arXiv. org In this paper, to relieve this issue, we propose stochastic integrated gradient underweighted ascent (SIGUA): in a mini-batch, we adopt gradient descent on good data as usual, and learning-rate-reduced gradient ascent on bad data; the proposal is a versatile approach where data goodness or badness is w r t desired or undesired memorization