1. Akrivas, G., Wallace, M., Andreou, G., Stamou, G., & Kollias, S. (2002). Context-sensitive semantic query expansion. In 2002 IEEE international conference on artificial intelligence systems (ICAIS’02).
2. Carroll, J., Dickinson, I., Dollin, C., Reynolds, D., Seaborne, A., & Wilkinson, K. (2003). The Jena semantic Web platform: Architecture and design. HP Laboratories Technical Report HPL-2003-146.
3. Thermodynamical approach to the traveling salesman problem: An efficient simulation algorithm;Cerny;Journal of Optimization Theory and Applications,1985
4. Ciaramita, M., Hofmann, T., Johnson, M., 2003. Hierarchical semantic classification: Word sense disambiguation with world knowledge. In IJCAI 2003 (pp. 817–822).
5. Cui, H., Wen, J.-R., Nie, J.-Y., & Ma, W.-Y.(2002). Probabilistic query expansion using query logs www.2002. (pp. 325–332).