Jaccard距离的轮廓分数 [英] Silhouette score for Jaccard distance

问题描述

我正在为单人作业研究kmeans功能.我们需要对一组数据运行欧几里得聚类，然后对另一组数据运行Jaccard.我们需要探索一些不同的模型来评估聚类的数量，对于欧几里得来说，使用 sklearn.metrics.silhouette_score 很简单，但这并没有提供使用Jaccard距离的选项.

I'm working on a kmeans functionality for a uni assignment. We need to run euclidean clustering on one set of data and then Jaccard on the other. We need to explore a few different models to evaluate the number of clusters and for the Euclidean it was quite straight forward using sklearn.metrics.silhouette_score, but this does not give the option to use Jaccard distance.

正因为如此，我想知道是否有人对如何计算Jaccard距离有一个想法?我设法为彼此之间的所有距离创建一个矩阵.我还在欧几里得距离中使用了Elbow方法，这对于Jaccard也是一种有效方法吗?

As such I was wondering if anyone has an idea of how to calculate it for Jaccard distance? I have managed to create a matrix for all the distances to each other. I also used the Elbow method in the Euclidean distance, would that be a valid method for Jaccard as well?

推荐答案

使用metric ="precomputed"

Use metric="precomputed"

from sklearn.metrics import silhouette_score
silhouette_score(dist_matrix, k_means_cluster_ids, metric="precomputed")

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