Research on Efficient Algorithms for Intelligent Computing in Big Data Analytics
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03 feb 2025
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Publicado en línea: 03 feb 2025
Recibido: 15 sept 2024
Aceptado: 04 ene 2025
DOI: https://doi.org/10.2478/amns-2025-0020
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© 2025 Xiguo Zhou et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
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Comparison of query execution time
| Database | Unit: ms | Q1 | Q2 | Q3 | Q4 | Q5 | Q6 | Q7 | Q8 | Q9 | Q10 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LUBM-5 | Hadoop HDFS | Cold | 235 | 9445 | 241 | 369 | 425 | 1491 | 299 | 365 | 14K | 277 |
| Hot | 114 | 9188 | 159 | 152 | 194 | 513 | 109 | 142 | 14K | 152 | ||
| Jena-Hbase | Cold | 20K | 11K | 60K | 4256 | 62K | 2378 | NA | NA | NA | 18K | |
| Hot | 16K | 10K | 45K | 4024 | 9345 | 864 | NA | 322K | NA | 18K | ||
| SHARD | Cold | 156K | 302K | 184K | 212K | 287K | 672K | 65K | 203K | 856K | 200K | |
| Hot | 101K | 285K | 112K | 124K | 169K | 611K | 42K | 172K | 432K | 142K | ||
| LUBM-50 | Hadoop HDFS | Cold | 244 | 9051 | 303 | 314 | 415 | 2003 | 511 | 425 | 14K | 363 |
| Hot | 112 | 8879 | 115 | 164 | 185 | 1734 | 203 | 302 | 14K | 122 | ||
| Jena-Hbase | - | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| SHARD | Cold | 188K | 415K | 224K | 306K | 179K | 406K | 206K | 108K | 425K | 174K | |
| Hot | 116K | 315K | 189K | 177K | 133K | 342K | 166K | 77K | 348K | 130K | ||
| LUBM-500 | Hadoop HDFS | Cold | 218 | 8974 | 266 | 273 | 231 | 18K | 237 | 321 | 15K | 227 |
| Hot | 112 | 8546 | 105 | 130 | 121 | 17K | 133 | 201 | 15K | 102 | ||
| Jena-Hbase | - | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| SHARD | Cold | 306K | 986K | 426K | 387K | 462K | 884K | 506K | 472K | 926K | 412K | |
| Hot | 245K | 758K | 285K | 204K | 306K | 695K | 330K | 394K | 734K | 283K |
Hadoop HDFS index storage usage
| LUBM-5 | LUBM-50 | LUBM-500 | |
|---|---|---|---|
| Total | 195.4MB | 2.0GB | 17.9GB |
| Avg.±Std. | 10.25±1.68MB | 118.00±19.48MB | 1.02GB±203.45MB |
Comparison of clustering time cost of different parallel DBSCAN algorithms
| Data set | Algorithm | Clustering time |
|---|---|---|
| R15 | Naive DBSCAN | 20.485s |
| Spark DBSCAN | 17.065s | |
| Jain | Naive DBSCAN | 18.746s |
| Spark DBSCAN | 15.062s | |
| Pathbased | Naive DBSCAN | 17.223s |
| Spark DBSCAN | 16.012s | |
| Aggregation | Naive DBSCAN | 15.462s |
| Spark DBSCAN | 4.726s | |
| D31 | Naive DBSCAN | 87.633s |
| Spark DBSCAN | 40.745s |
Comparison of clustering result indexes of different parallel DBSCAN algorithms
| Data set | Algorithm | Silhouette coefficient | Purity | Rand index | Adjusted Rand index | F1-score |
|---|---|---|---|---|---|---|
| R15 | Naive DBSCAN | 0.7658 | 0.9644 | 0.9685 | 0.9532 | 0.9412 |
| Spark DBSCAN | 0.7346 | 0.9416 | 0.9602 | 0.9263 | 0.9331 | |
| Jain | Naive DBSCAN | 0.3015 | 0.9745 | 0.4913 | 0.1026 | 0.2578 |
| Spark DBSCAN | 0.3015 | 0.9745 | 0.4913 | 0.1026 | 0.2578 | |
| Pathbased | Naive DBSCAN | 0.3562 | 0.9278 | 0.7016 | 0.1152 | 0.1723 |
| Spark DBSCAN | 0.3562 | 0.9278 | 0.7016 | 0.1152 | 0.1723 | |
| Aggregation | Naive DBSCAN | 0.3325 | 0.8244 | 0.8078 | 0.1605 | 0.2346 |
| Spark DBSCAN | 0.3325 | 0.8244 | 0.8078 | 0.1605 | 0.2346 | |
| D31 | Naive DBSCAN | 0.5815 | 0.9045 | 0.9952 | 0.8142 | 0.8156 |
| Spark DBSCAN | 0.5685 | 0.8712 | 0.9896 | 0.7724 | 0.7789 |
