Engineering tag extraction
Every tag read from the project's documents, with the reading confidence and the grammar confidence kept apart.
Demonstration project - no figure here describes a real facilityChanges are not saved
Why
Each candidate is a real reading, normalised against the project's own tag grammar. The combined confidence is the product of the two, not their average.
Writes are validated against the engineering rules and then refused, because no database has been configured for this environment.
Tag readings
131
Recognised by the grammar
127
In a register
128
With a problem
22
Lowest combined
36%
| As read | Normalised | Reading | Grammar | Combined | Problem |
|---|---|---|---|---|---|
| HV-1201 | unchanged | 80%Unverified | 93%Unverified | 74%Unverified | In the register |
| LCV-1210 | unchanged | 80%Unverified | 93%Unverified | 74%Unverified | In the register |
| PSV-1210 | unchanged | 80%Unverified | 93%Unverified | 74%Unverified | In the register |
| CV-1201 | unchanged | 80%Unverified | 93%Unverified | 74%Unverified | In the register |
| HV-1202 | unchanged | 80%Unverified | 93%Unverified | 74%Unverified | In the register |
| HV-1202 | unchanged | 80%Unverified | 93%Unverified | 74%Unverified | In the register |
| XV-1205 | unchanged | 80%Unverified | 93%Unverified | 74%Unverified | In the register |
| HV-3201 | unchanged | 80%Unverified | 93%Unverified | 74%Unverified | In the register |
| PSV-1210 | unchanged | 80%Unverified | 93%Unverified | 74%Unverified | In the register |
| P-1201B | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| V-1210 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| F-1205 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| M-1201A | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| P-1201B | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| V-1210 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| F-1205 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| M-1201A | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| E-1216 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| E-1216 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| K-3201 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| V-3210 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| V-1210 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| E-1216 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| V-1110 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| K-1120 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| TX-6010 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| M-1201A | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| M-1201B | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| M-1201A | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| V-1210 | unchanged | 80%Unverified | 95%Unverified | 76%Unverified | In the register |
| 12-CD-1202-150-A1A | unchanged | 80%Unverified | 97%Unverified | 78%Unverified | In the register |
| 12-CD-1203-100-A1A | unchanged | 80%Unverified | 97%Unverified | 78%Unverified | In the register |
| 12-CD-1202-150-A1A | unchanged | 80%Unverified | 97%Unverified | 78%Unverified | In the register |
| 12-CD-1203-100-A1A | unchanged | 80%Unverified | 97%Unverified | 78%Unverified | In the register |
| 12-CD-1202-150-A1A | unchanged | 80%Unverified | 97%Unverified | 78%Unverified | In the register |
| 12-CD-1202-150-A1A | unchanged | 80%Unverified | 97%Unverified | 78%Unverified | In the register |
| 12-CW-1210-100-C1C | unchanged | 80%Unverified | 97%Unverified | 78%Unverified | In the register |
| 32-IA-3201-80-C1C | unchanged | 80%Unverified | 97%Unverified | 78%Unverified | In the register |
| LIC-1210 | not recognised | 80%Unverified | — | 80%Unverified | the project's tag grammar does not recognise this: no rule matched |
| LIC-1210 | not recognised | 80%Unverified | — | 80%Unverified | the project's tag grammar does not recognise this: no rule matched |
| MCC-6001 | not recognised | 80%Unverified | — | 80%Unverified | the project's tag grammar does not recognise this: no rule matched |
| C-60101 | unchanged | 100%Unverified | 80%Unverified | 80%Unverified | In the register |
| C-60102 | unchanged | 100%Unverified | 80%Unverified | 80%Unverified | In the register |
| C-60201 | unchanged | 100%Unverified | 80%Unverified | 80%Unverified | In the register |
| PT-1202 | unchanged | 100%Unverified | 90%Unverified | 90%Unverified | In the register |
| TT-1203 | unchanged | 100%Unverified | 90%Unverified | 90%Unverified | In the register |
| LT-1210 | unchanged | 100%Unverified | 90%Unverified | 90%Unverified | In the register |
| FT-1204 | unchanged | 100%Unverified | 90%Unverified | 90%Unverified | In the register |
| PSH-1201 | unchanged | 100%Unverified | 90%Unverified | 90%Unverified | In the register |
| PT-1101 | unchanged | 100%Unverified | 90%Unverified | 90%Unverified | In the register |
Two uncertainties, multiplied
A tag has been through two steps that can each be wrong: something read the characters, and something decided they form a tag. A character read at 0.6 that the grammar accepts at 0.9 is wrong if either step was - so the combined figure is 0.54, not 0.75. Averaging would let a confident grammar rescue an unreliable reading, which is how
PT-120I becomes PT-1201.Verify a reading
Normalisation is not correction
The grammar reformats PT1201 to PT-1201 because the project’s convention has a hyphen. It does not change a character it thinks was misread: repairing PT-120I to PT-1201 would silently resolve the exact ambiguity the exception register exists to raise.