 Our evaluation on real-world and synthetic data sets shows that our new approaches outperform the baselines with respect to indexing time , query time , and quality of results.
<clarity>  Our evaluation on real-world and synthetic data sets shows that our new approaches outperform the baselines with respect to indexing time , query time , and quality of results.
 Our evaluation on real-world and synthetic data sets shows that our algorithms outperform the baselines with respect to indexing time , query time , and quality of results.