Principal Component Analysis at other sites
Coin recognition algorithm(26th June 2013) |
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I developed a coin recognition system which can recognize eight different groups of coins. The used set is all five coins of Singapore, but a few categories cannot be distinguished from each other without knowledge of the coin's size in relation to others.
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Co-occurrence matrix
| Matl | Pyth | C++ | Cloj | Bash | Kera | |
| Comput | 6 | 6 | 3 | 1 | 0 | 5 |
| GitHub | 0 | 2 | 1 | 4 | 3 | 0 |
| Databa | 0 | 3 | 2 | 2 | 1 | 0 |
| Render | 3 | 0 | 3 | 0 | 0 | 0 |
| Nginx | 0 | 1 | 0 | 0 | 4 | 0 |
| Autoen | 0 | 3 | 0 | 1 | 0 | 2 |
| Elasti | 0 | 2 | 0 | 3 | 0 | 0 |
| FFT | 3 | 1 | 1 | 0 | 0 | 1 |
| Data S | 2 | 1 | 2 | 1 | 0 | 1 |
| JVM | 0 | 1 | 0 | 3 | 1 | 0 |
| Docker | 0 | 1 | 0 | 0 | 3 | 0 |
| FastCG | 0 | 0 | 3 | 0 | 0 | 0 |
| Applie | 2 | 2 | 0 | 0 | 0 | 0 |
| Field | 2 | 0 | 2 | 0 | 0 | 0 |
| Omnidi | 2 | 0 | 2 | 0 | 0 | 0 |
| Affine | 2 | 0 | 2 | 0 | 0 | 0 |
| Master | 1 | 0 | 2 | 0 | 0 | 0 |
| Archit | 0 | 1 | 0 | 0 | 2 | 0 |
| Visual | 1 | 0 | 2 | 0 | 0 | 0 |
| Spark | 0 | 1 | 0 | 0 | 2 | 0 |
| Blog | 0 | 0 | 0 | 2 | 0 | 0 |
| Hyphen | 0 | 0 | 0 | 2 | 0 | 0 |
| Stack | 0 | 1 | 1 | 0 | 0 | 0 |
| SQL | 0 | 0 | 1 | 1 | 0 | 0 |
| Busine | 0 | 1 | 0 | 1 | 0 | 0 |
| Signal | 0 | 1 | 0 | 0 | 0 | 1 |
| Encryp | 0 | 0 | 0 | 0 | 1 | 0 |
| Git | 0 | 0 | 0 | 1 | 0 | 0 |
| Stable | 0 | 1 | 0 | 0 | 0 | 0 |
| Redis | 0 | 1 | 0 | 0 | 0 | 0 |
| Thrust | 0 | 0 | 1 | 0 | 0 | 0 |
| Kibana | 0 | 0 | 0 | 1 | 0 | 0 |
| Astron | 1 | 0 | 0 | 0 | 0 | 0 |
| Mustac | 0 | 0 | 1 | 0 | 0 | 0 |
| NAT | 0 | 0 | 0 | 0 | 1 | 0 |
| jQuery | 0 | 0 | 1 | 0 | 0 | 0 |
| SSH | 0 | 0 | 0 | 0 | 1 | 0 |
| Happyh | 0 | 0 | 1 | 0 | 0 | 0 |
| Backup | 0 | 0 | 0 | 0 | 1 | 0 |
| Pthrea | 0 | 0 | 1 | 0 | 0 | 0 |
| AWS | 0 | 0 | 0 | 0 | 1 | 0 |
| SIFT | 0 | 0 | 1 | 0 | 0 | 0 |
| SURF | 0 | 0 | 1 | 0 | 0 | 0 |
| Conjug | 0 | 0 | 1 | 0 | 0 | 0 |
| Kalman | 0 | 0 | 1 | 0 | 0 | 0 |
| Partic | 0 | 0 | 1 | 0 | 0 | 0 |
| Gradie | 0 | 0 | 1 | 0 | 0 | 0 |
| Simult | 0 | 0 | 1 | 0 | 0 | 0 |
| Roboti | 0 | 0 | 1 | 0 | 0 | 0 |
| Princi | 1 | 0 | 0 | 0 | 0 | 0 |
| Receiv | 1 | 0 | 0 | 0 | 0 | 0 |
| Linear | 1 | 0 | 0 | 0 | 0 | 0 |
| Suppor | 1 | 0 | 0 | 0 | 0 | 0 |
| Machin | 1 | 0 | 0 | 0 | 0 | 0 |
| Discre | 1 | 0 | 0 | 0 | 0 | 0 |
