<!--
 Recommend the other 3 posts according to the tags and categories of the current post,
 if the number is not enough, use the other latest posts to supplement.
-->

<!-- The total size of related posts  -->
{% assign TOTAL_SIZE = 3 %}

<!-- An random integer that bigger than 0  -->
{% assign TAG_SCORE = 1 %}

<!-- Equals to TAG_SCORE / {max_categories_hierarchy}  -->
{% assign CATEGORY_SCORE = 0.5 %}

{% assign SEPARATOR = ":" %}

{% assign score_list = "" | split: "" %}
{% assign last_index = site.post