[英]Setting hyperparameters of the LDA model in vowpal wabbit
I am a typical, regular, everyday Spark user. 我是典型的常规日常Spark用户。 In Spark's LDA there are hyperparameters thats stands for
在Spark的LDA中 ,有超参数代表
docConcentration
: Hyperparameter for prior over documents' distributions over topics.docConcentration
:先前过度文档对主题的分布的超参数。 Currently must be > 1, where larger values encourage smoother inferred distributions.目前必须> 1,其中较大的值鼓励更顺畅的推断分布。
topicConcentration
: Hyperparameter for prior over topics' distributions over terms (words).topicConcentration
:先前超过主题在术语(单词)上的分布的超参数。 Currently must be > 1, where larger values encourage smoother inferred distributions.目前必须> 1,其中较大的值鼓励更顺畅的推断分布。
which corresponds to typically assigned in the literature $\\alpha$ and $\\beta$ parameters for which (and $k$ - number of topics) the log-likelihood function of the LDA model is optimized during the convergence process. 这对应于文献中通常分配的$ \\ alpha $和$ \\ beta $参数,其中(和$ k $ - 主题数量)LDA模型的对数似然函数在收敛过程中被优化。
Does anyone know if there is any option to set such arguments/parameters prior in vowpal wabbit's LDA model? 有没有人知道在vowpal wabbit的LDA模型之前是否有任何选项可以设置这样的参数/参数?
Check this description of vw lda. 检查vw lda的这种描述。 !
! I think the parameters mentioned on 13th slide might be the ones that you are looking for.
我认为第13张幻灯片中提到的参数可能是您正在寻找的参数。
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