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It is evident that hybrid approaches combining collaborative and content-based filtering have demonstrated considerable potential; however, they do not fully use the semantic richness of knowledge graphs. To address this, we propose a method that enriches the knowledge graph and improves the recommendation performance by identifying implicit relationships between entities using unsupervised clustering and cosine similarity calculations. These relationships are then integrated into the graph in the form of new weighted edges. The TransR model is then used to recalculate the enriched embeddings, before employing an attention mechanism to capture complex dependencies between users and items. Experiments conducted on the Yelp2018 and Amazon datasets demonstrate a substantial enhancement in the efficacy of recommendation systems, underscoring the efficacy of the proposed approach in enhancing attentional propagation and generating recommendations that are more pertinent and tailored to individual users.<\/jats:p>","DOI":"10.1177\/18758967251377814","type":"journal-article","created":{"date-parts":[[2025,9,18]],"date-time":"2025-09-18T15:39:56Z","timestamp":1758209996000},"page":"1471-1489","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Improving Recommendations from Knowledge Graphs by Multi-Level Semantic Enrichment Based on Clustering and Attention Mechanism"],"prefix":"10.1177","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6368-162X","authenticated-orcid":false,"given":"Mohamed Said Mehdi","family":"Mendjel","sequence":"first","affiliation":[{"name":"Labged Laboratory, Department of Computer Science, Badji Mokhtar-Annaba University, Annaba, Algeria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9730-2333","authenticated-orcid":false,"given":"Sabri","family":"Ghazi","sequence":"additional","affiliation":[{"name":"Labged Laboratory, Department of Computer Science, Badji Mokhtar-Annaba University, Annaba, Algeria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-8745-6898","authenticated-orcid":false,"given":"Hassina","family":"Seridi-Bouchlaghem","sequence":"additional","affiliation":[{"name":"Labged Laboratory, Department of Computer Science, Badji Mokhtar-Annaba University, Annaba, Algeria"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,9,18]]},"reference":[{"key":"e_1_3_4_2_1","doi-asserted-by":"publisher","DOI":"10.3390\/a11090137"},{"key":"e_1_3_4_3_1","doi-asserted-by":"crossref","unstructured":"Catherine R. 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