[{"author":[{"id":"101165","full_name":"Kamdem Teyou, Louis Mozart","last_name":"Kamdem Teyou","first_name":"Louis Mozart"},{"full_name":"Demir, Caglar","first_name":"Caglar","last_name":"Demir"},{"full_name":"Ngonga Ngomo, Axel-Cyrille","last_name":"Ngonga Ngomo","first_name":"Axel-Cyrille","id":"65716"}],"publication_identifier":{"isbn":["9783032251558","9783032251565"],"issn":["0302-9743","1611-3349"]},"status":"public","title":"Semantics-Aware Caching for Concept Learning","year":"2026","date_updated":"2026-05-29T14:23:47Z","publication_status":"published","language":[{"iso":"eng"}],"_id":"65736","publisher":"Springer Nature Switzerland","doi":"10.1007/978-3-032-25156-5_26","user_id":"101165","citation":{"short":"L.M. Kamdem Teyou, C. Demir, A.-C. Ngonga Ngomo, in: Lecture Notes in Computer Science, Springer Nature Switzerland, Cham, 2026.","chicago":"Kamdem Teyou, Louis Mozart, Caglar Demir, and Axel-Cyrille Ngonga Ngomo. “Semantics-Aware Caching for Concept Learning.” In <i>Lecture Notes in Computer Science</i>. Cham: Springer Nature Switzerland, 2026. <a href=\"https://doi.org/10.1007/978-3-032-25156-5_26\">https://doi.org/10.1007/978-3-032-25156-5_26</a>.","apa":"Kamdem Teyou, L. M., Demir, C., &#38; Ngonga Ngomo, A.-C. (2026). Semantics-Aware Caching for Concept Learning. In <i>Lecture Notes in Computer Science</i>. Springer Nature Switzerland. <a href=\"https://doi.org/10.1007/978-3-032-25156-5_26\">https://doi.org/10.1007/978-3-032-25156-5_26</a>","ieee":"L. M. Kamdem Teyou, C. Demir, and A.-C. Ngonga Ngomo, “Semantics-Aware Caching for Concept Learning,” in <i>Lecture Notes in Computer Science</i>, Cham: Springer Nature Switzerland, 2026.","ama":"Kamdem Teyou LM, Demir C, Ngonga Ngomo A-C. Semantics-Aware Caching for Concept Learning. In: <i>Lecture Notes in Computer Science</i>. Springer Nature Switzerland; 2026. doi:<a href=\"https://doi.org/10.1007/978-3-032-25156-5_26\">10.1007/978-3-032-25156-5_26</a>","bibtex":"@inbook{Kamdem Teyou_Demir_Ngonga Ngomo_2026, place={Cham}, title={Semantics-Aware Caching for Concept Learning}, DOI={<a href=\"https://doi.org/10.1007/978-3-032-25156-5_26\">10.1007/978-3-032-25156-5_26</a>}, booktitle={Lecture Notes in Computer Science}, publisher={Springer Nature Switzerland}, author={Kamdem Teyou, Louis Mozart and Demir, Caglar and Ngonga Ngomo, Axel-Cyrille}, year={2026} }","mla":"Kamdem Teyou, Louis Mozart, et al. “Semantics-Aware Caching for Concept Learning.” <i>Lecture Notes in Computer Science</i>, Springer Nature Switzerland, 2026, doi:<a href=\"https://doi.org/10.1007/978-3-032-25156-5_26\">10.1007/978-3-032-25156-5_26</a>."},"publication":"Lecture Notes in Computer Science","place":"Cham","date_created":"2026-05-29T14:22:42Z","type":"book_chapter"},{"status":"public","year":"2026","title":"A Possible Human-Centered Embedding Space Search in Degenerate Clifford Algebras","author":[{"last_name":"Roberts","first_name":"Isaac","full_name":"Roberts, Isaac"},{"id":"101165","first_name":"Louis Mozart","last_name":"Kamdem Teyou","full_name":"Kamdem Teyou, Louis Mozart"},{"last_name":"Schulz","first_name":"Alexander","full_name":"Schulz, Alexander"},{"full_name":"Kouagou, N'Dah Jean","first_name":"N'Dah Jean","last_name":"Kouagou"},{"last_name":"Ngonga Ngomo","first_name":"Axel-Cyrille","full_name":"Ngonga Ngomo, Axel-Cyrille","id":"65716"},{"full_name":"Hammer, Barbara","first_name":"Barbara","last_name":"Hammer"}],"date_updated":"2026-05-29T14:23:40Z","publication_status":"published","publisher":"Ciaco - i6doc.com","_id":"65735","language":[{"iso":"eng"}],"doi":"10.14428/esann/2026.es2026-283","user_id":"101165","publication":"ESANN 2026 proceedings","citation":{"mla":"Roberts, Isaac, et al. “A Possible Human-Centered Embedding Space Search in Degenerate Clifford Algebras.” <i>ESANN 2026 Proceedings</i>, Ciaco - i6doc.com, 2026, doi:<a href=\"https://doi.org/10.14428/esann/2026.es2026-283\">10.14428/esann/2026.es2026-283</a>.","ama":"Roberts I, Kamdem Teyou LM, Schulz A, Kouagou NJ, Ngonga Ngomo A-C, Hammer B. A Possible Human-Centered Embedding Space Search in Degenerate Clifford Algebras. In: <i>ESANN 2026 Proceedings</i>. Ciaco - i6doc.com; 2026. doi:<a href=\"https://doi.org/10.14428/esann/2026.es2026-283\">10.14428/esann/2026.es2026-283</a>","bibtex":"@inproceedings{Roberts_Kamdem Teyou_Schulz_Kouagou_Ngonga Ngomo_Hammer_2026, title={A Possible Human-Centered Embedding Space Search in Degenerate Clifford Algebras}, DOI={<a href=\"https://doi.org/10.14428/esann/2026.es2026-283\">10.14428/esann/2026.es2026-283</a>}, booktitle={ESANN 2026 proceedings}, publisher={Ciaco - i6doc.com}, author={Roberts, Isaac and Kamdem Teyou, Louis Mozart and Schulz, Alexander and Kouagou, N’Dah Jean and Ngonga Ngomo, Axel-Cyrille and Hammer, Barbara}, year={2026} }","apa":"Roberts, I., Kamdem Teyou, L. M., Schulz, A., Kouagou, N. J., Ngonga Ngomo, A.-C., &#38; Hammer, B. (2026). A Possible Human-Centered Embedding Space Search in Degenerate Clifford Algebras. <i>ESANN 2026 Proceedings</i>. <a href=\"https://doi.org/10.14428/esann/2026.es2026-283\">https://doi.org/10.14428/esann/2026.es2026-283</a>","ieee":"I. Roberts, L. M. Kamdem Teyou, A. Schulz, N. J. Kouagou, A.-C. Ngonga Ngomo, and B. Hammer, “A Possible Human-Centered Embedding Space Search in Degenerate Clifford Algebras,” 2026, doi: <a href=\"https://doi.org/10.14428/esann/2026.es2026-283\">10.14428/esann/2026.es2026-283</a>.","chicago":"Roberts, Isaac, Louis Mozart Kamdem Teyou, Alexander Schulz, N’Dah Jean Kouagou, Axel-Cyrille Ngonga Ngomo, and Barbara Hammer. “A Possible Human-Centered Embedding Space Search in Degenerate Clifford Algebras.” In <i>ESANN 2026 Proceedings</i>. Ciaco - i6doc.com, 2026. <a href=\"https://doi.org/10.14428/esann/2026.es2026-283\">https://doi.org/10.14428/esann/2026.es2026-283</a>.","short":"I. Roberts, L.M. Kamdem Teyou, A. Schulz, N.J. Kouagou, A.-C. Ngonga Ngomo, B. Hammer, in: ESANN 2026 Proceedings, Ciaco - i6doc.com, 2026."},"date_created":"2026-05-29T14:18:30Z","type":"conference"},{"date_updated":"2026-05-29T14:16:06Z","author":[{"id":"101165","last_name":"Kamdem Teyou","first_name":"Louis Mozart","full_name":"Kamdem Teyou, Louis Mozart"},{"last_name":"Friedrichs","first_name":"Luke","full_name":"Friedrichs, Luke"},{"id":"87189","full_name":"Kouagou, N'Dah Jean","last_name":"Kouagou","first_name":"N'Dah Jean"},{"full_name":"Demir, Caglar","last_name":"Demir","first_name":"Caglar","id":"43817"},{"id":"99353","first_name":"Yasir","last_name":"Mahmood","full_name":"Mahmood, Yasir"},{"full_name":"Heindorf, Stefan","last_name":"Heindorf","first_name":"Stefan","orcid":"0000-0002-4525-6865","id":"11871"},{"id":"65716","full_name":"Ngonga Ngomo, Axel-Cyrille","last_name":"Ngonga Ngomo","first_name":"Axel-Cyrille"}],"conference":{"start_date":"2025-12-09","name":"The 13th COnference on Knowledge Capture (K-CAP'25)","location":"Dayton-USA","end_date":"2025-12-12"},"year":"2025","title":"Neural Reasoning for Robust Instance Retrieval in SHOIQ","status":"public","user_id":"101165","doi":"https://doi.org/10.1145/3731443.377134","language":[{"iso":"eng"}],"_id":"65734","main_file_link":[{"url":"https://dl.acm.org/doi/10.1145/3731443.3771348","open_access":"1"}],"citation":{"ama":"Kamdem Teyou LM, Friedrichs L, Kouagou NJ, et al. Neural Reasoning for Robust Instance Retrieval in SHOIQ. In: ; 2025. doi:<a href=\"https://doi.org/10.1145/3731443.377134\">https://doi.org/10.1145/3731443.377134</a>","bibtex":"@inproceedings{Kamdem Teyou_Friedrichs_Kouagou_Demir_Mahmood_Heindorf_Ngonga Ngomo_2025, title={Neural Reasoning for Robust Instance Retrieval in SHOIQ}, DOI={<a href=\"https://doi.org/10.1145/3731443.377134\">https://doi.org/10.1145/3731443.377134</a>}, author={Kamdem Teyou, Louis Mozart and Friedrichs, Luke and Kouagou, N’Dah Jean and Demir, Caglar and Mahmood, Yasir and Heindorf, Stefan and Ngonga Ngomo, Axel-Cyrille}, year={2025} }","mla":"Kamdem Teyou, Louis Mozart, et al. <i>Neural Reasoning for Robust Instance Retrieval in SHOIQ</i>. 2025, doi:<a href=\"https://doi.org/10.1145/3731443.377134\">https://doi.org/10.1145/3731443.377134</a>.","short":"L.M. Kamdem Teyou, L. Friedrichs, N.J. Kouagou, C. Demir, Y. Mahmood, S. Heindorf, A.-C. Ngonga Ngomo, in: 2025.","chicago":"Kamdem Teyou, Louis Mozart, Luke Friedrichs, N’Dah Jean Kouagou, Caglar Demir, Yasir Mahmood, Stefan Heindorf, and Axel-Cyrille Ngonga Ngomo. “Neural Reasoning for Robust Instance Retrieval in SHOIQ,” 2025. <a href=\"https://doi.org/10.1145/3731443.377134\">https://doi.org/10.1145/3731443.377134</a>.","apa":"Kamdem Teyou, L. M., Friedrichs, L., Kouagou, N. J., Demir, C., Mahmood, Y., Heindorf, S., &#38; Ngonga Ngomo, A.-C. (2025). <i>Neural Reasoning for Robust Instance Retrieval in SHOIQ</i>. The 13th COnference on Knowledge Capture (K-CAP’25), Dayton-USA. <a href=\"https://doi.org/10.1145/3731443.377134\">https://doi.org/10.1145/3731443.377134</a>","ieee":"L. M. Kamdem Teyou <i>et al.</i>, “Neural Reasoning for Robust Instance Retrieval in SHOIQ,” presented at the The 13th COnference on Knowledge Capture (K-CAP’25), Dayton-USA, 2025, doi: <a href=\"https://doi.org/10.1145/3731443.377134\">https://doi.org/10.1145/3731443.377134</a>."},"department":[{"_id":"574"}],"oa":"1","type":"conference","date_created":"2026-05-29T14:12:43Z"},{"quality_controlled":"1","citation":{"ama":"Kamdem Teyou LM, Demir C, Ngonga Ngomo A-C. Embedding Knowledge Graphs in Degenerate Clifford Algebras. In: <i>Frontiers in Artificial Intelligence and Applications</i>. IOS Press; 2024. doi:<a href=\"https://doi.org/10.3233/faia240627\">10.3233/faia240627</a>","bibtex":"@inbook{Kamdem Teyou_Demir_Ngonga Ngomo_2024, title={Embedding Knowledge Graphs in Degenerate Clifford Algebras}, DOI={<a href=\"https://doi.org/10.3233/faia240627\">10.3233/faia240627</a>}, booktitle={Frontiers in Artificial Intelligence and Applications}, publisher={IOS Press}, author={Kamdem Teyou, Louis Mozart and Demir, Caglar and Ngonga Ngomo, Axel-Cyrille}, year={2024} }","mla":"Kamdem Teyou, Louis Mozart, et al. “Embedding Knowledge Graphs in Degenerate Clifford Algebras.” <i>Frontiers in Artificial Intelligence and Applications</i>, IOS Press, 2024, doi:<a href=\"https://doi.org/10.3233/faia240627\">10.3233/faia240627</a>.","chicago":"Kamdem Teyou, Louis Mozart, Caglar Demir, and Axel-Cyrille Ngonga Ngomo. “Embedding Knowledge Graphs in Degenerate Clifford Algebras.” In <i>Frontiers in Artificial Intelligence and Applications</i>. IOS Press, 2024. <a href=\"https://doi.org/10.3233/faia240627\">https://doi.org/10.3233/faia240627</a>.","short":"L.M. Kamdem Teyou, C. Demir, A.-C. Ngonga Ngomo, in: Frontiers in Artificial Intelligence and Applications, IOS Press, 2024.","apa":"Kamdem Teyou, L. M., Demir, C., &#38; Ngonga Ngomo, A.-C. (2024). Embedding Knowledge Graphs in Degenerate Clifford Algebras. In <i>Frontiers in Artificial Intelligence and Applications</i>. 27TH EUROPEAN CONFERENCE ON ARTIFICIAL INTELLIGENCE, Santiago de Compostela. IOS Press. <a href=\"https://doi.org/10.3233/faia240627\">https://doi.org/10.3233/faia240627</a>","ieee":"L. M. Kamdem Teyou, C. Demir, and A.-C. Ngonga Ngomo, “Embedding Knowledge Graphs in Degenerate Clifford Algebras,” in <i>Frontiers in Artificial Intelligence and Applications</i>, IOS Press, 2024."},"popular_science":"1","user_id":"101165","_id":"62702","publisher":"IOS Press","conference":{"location":"Santiago de Compostela","start_date":"2024-10-19","name":"27TH EUROPEAN CONFERENCE ON ARTIFICIAL INTELLIGENCE","end_date":"2024-10-24"},"status":"public","department":[{"_id":"34"},{"_id":"574"}],"type":"book_chapter","date_created":"2025-11-28T14:32:43Z","abstract":[{"text":"<jats:p>Clifford algebras are a natural extension of division algebras, including real numbers, complex numbers, quaternions, and octonions. Previous research in knowledge graph embeddings has focused exclusively on Clifford algebras of a specific type, which do not include nilpotent base vectors—elements that square to zero. In this work, we introduce a novel approach by incorporating nilpotent base vectors with a nilpotency index of two, leading to a more general form of Clifford algebras named degenerate Clifford algebras. This generalization to degenerate Clifford algebras does allow for covering dual numbers and as such include translations and rotations models under the same generalization paradigm for the first time. We develop two models to determine the parameters that define the algebra: one using a greedy search and another predicting the parameters based on neural network embeddings of the input knowledge graph. Our evaluation on seven benchmark datasets demonstrates that this incorporation of nilpotent vectors enhances the quality of embeddings. Additionally, our method outperforms state-of-the-art approaches in terms of generalization, particularly regarding the mean reciprocal rank achieved on validation data. Finally, we show that even a simple greedy search can effectively discover optimal or near-optimal parameters for the algebra.</jats:p>","lang":"eng"}],"publication":"Frontiers in Artificial Intelligence and Applications","doi":"10.3233/faia240627","language":[{"iso":"eng"}],"date_updated":"2026-05-29T14:34:11Z","publication_status":"published","publication_identifier":{"issn":["0922-6389","1879-8314"],"isbn":["9781643685489"]},"author":[{"id":"101165","full_name":"Kamdem Teyou, Louis Mozart","first_name":"Louis Mozart","last_name":"Kamdem Teyou"},{"id":"43817","full_name":"Demir, Caglar","last_name":"Demir","first_name":"Caglar"},{"id":"65716","last_name":"Ngonga Ngomo","first_name":"Axel-Cyrille","full_name":"Ngonga Ngomo, Axel-Cyrille"}],"title":"Embedding Knowledge Graphs in Degenerate Clifford Algebras","year":"2024"},{"type":"conference","department":[{"_id":"34"},{"_id":"574"}],"place":"Boise","date_created":"2025-11-28T14:42:32Z","abstract":[{"text":"We introduce a novel embedding method diverging from conventional approaches by operating within function spaces of finite dimension rather than finite vector space, thus departing significantly from standard knowledge graph embedding techniques. Initially employing polynomial functions to compute embeddings, we progress to more intricate representations using neural networks with varying layer complexities. We argue that employing functions for embedding computation enhances expressiveness and allows for more degrees of freedom, enabling operations such as composition, derivatives and primitive of entities representation. Additionally, we meticulously outline the step-by-step construction of our approach and provide code for reproducibility, thereby facilitating further exploration and application in the field.","lang":"eng"}],"publication":"Proceedings of the 33rd ACM International Conference on Information and Knowledge Management","citation":{"mla":"Kamdem Teyou, Louis Mozart, et al. “Embedding Knowledge Graphs in Function Spaces.” <i>Proceedings of the 33rd ACM International Conference on Information and Knowledge Management</i>, ACM, 2024, doi:<a href=\"https://doi.org/10.1145/3627673.3679819\">10.1145/3627673.3679819</a>.","ama":"Kamdem Teyou LM, Demir C, Ngonga Ngomo A-C. Embedding Knowledge Graphs in Function Spaces. In: <i>Proceedings of the 33rd ACM International Conference on Information and Knowledge Management</i>. ACM; 2024. doi:<a href=\"https://doi.org/10.1145/3627673.3679819\">10.1145/3627673.3679819</a>","bibtex":"@inproceedings{Kamdem Teyou_Demir_Ngonga Ngomo_2024, place={Boise}, title={Embedding Knowledge Graphs in Function Spaces}, DOI={<a href=\"https://doi.org/10.1145/3627673.3679819\">10.1145/3627673.3679819</a>}, booktitle={Proceedings of the 33rd ACM International Conference on Information and Knowledge Management}, publisher={ACM}, author={Kamdem Teyou, Louis Mozart and Demir, Caglar and Ngonga Ngomo, Axel-Cyrille}, year={2024} }","apa":"Kamdem Teyou, L. M., Demir, C., &#38; Ngonga Ngomo, A.-C. (2024). Embedding Knowledge Graphs in Function Spaces. <i>Proceedings of the 33rd ACM International Conference on Information and Knowledge Management</i>. 33rd ACM International Conference on Information and Knowledge Management, Boise. <a href=\"https://doi.org/10.1145/3627673.3679819\">https://doi.org/10.1145/3627673.3679819</a>","ieee":"L. M. Kamdem Teyou, C. Demir, and A.-C. Ngonga Ngomo, “Embedding Knowledge Graphs in Function Spaces,” presented at the 33rd ACM International Conference on Information and Knowledge Management, Boise, 2024, doi: <a href=\"https://doi.org/10.1145/3627673.3679819\">10.1145/3627673.3679819</a>.","chicago":"Kamdem Teyou, Louis Mozart, Caglar Demir, and Axel-Cyrille Ngonga Ngomo. “Embedding Knowledge Graphs in Function Spaces.” In <i>Proceedings of the 33rd ACM International Conference on Information and Knowledge Management</i>. Boise: ACM, 2024. <a href=\"https://doi.org/10.1145/3627673.3679819\">https://doi.org/10.1145/3627673.3679819</a>.","short":"L.M. Kamdem Teyou, C. Demir, A.-C. Ngonga Ngomo, in: Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, ACM, Boise, 2024."},"doi":"10.1145/3627673.3679819","user_id":"101165","publisher":"ACM","_id":"62703","language":[{"iso":"eng"}],"date_updated":"2026-05-29T14:32:04Z","publication_status":"published","status":"public","year":"2024","title":"Embedding Knowledge Graphs in Function Spaces","conference":{"end_date":"2024-10-25","start_date":"2024-10-21","name":"33rd ACM International Conference on Information and Knowledge Management","location":"Boise"},"author":[{"first_name":"Louis Mozart","last_name":"Kamdem Teyou","full_name":"Kamdem Teyou, Louis Mozart","id":"101165"},{"id":"43817","full_name":"Demir, Caglar","first_name":"Caglar","last_name":"Demir"},{"full_name":"Ngonga Ngomo, Axel-Cyrille","first_name":"Axel-Cyrille","last_name":"Ngonga Ngomo"}]}]