The success of search engines depends heavily on the satisfaction of users. The main expectation of scholarly users is to search articles based on their research areas of interest, not merely based on subject, but by categories or subcategories. Knowledge Graph-based Scholarly Search Engine (KGSSE) is a Graph-based Academic Search Engine to meet the main expectation of academic search engine users to search an article through six levels, namely subject, categories, areas, disciplines, fields, and keywords. A sequence knowledge graph-based representation represents the contents of articles in...