Description of the data used in this study. Variables to identify the experimental units and repetitions are distinguished from the response variable, and variables used to predict the success rate in RFID reading. The measurement levels and accompanying class definitions or units of the variable are given between brackets
| Name | Description |
|---|---|
| Variables to identify experimental units and repetitions | |
| bar | identifier for each book (categorical; unique 10-digit integer) |
| run | identifier to indicate the arrangement of the books (categorical; 1 to 8) |
| rep | identifier to indicate the repetition, i.e. the number of sweeps (categorical; 1 to 40) |
| Response variable | |
| s | number of times that a tag was successfully identified (count; 0 to 40) |
| f | number of times that a tag was not identified (count; 0 to 40, by definition f = 40-s) |
| r | success ratio (ratio; r = s/40) |
| Predictor variables | |
| tpo | Tag position (binary; near spine or near opening side) |
| tor | Tag orientation (binary; standing or laying) |
| sdi | Distance to nearest shelf side (ratio; cm) |
| bth | Thickness of book (ratio; cm) |
| bt3 | Thickness over three books (ratio; cm) |
| std | Spine tag density, determined by kernel smoothing (ratio; nr/cm) |
| Name | Description |
|---|---|
| bar | identifier for each book (categorical; unique 10-digit integer) |
| run | identifier to indicate the arrangement of the books (categorical; 1 to 8) |
| rep | identifier to indicate the repetition, i.e. the number of sweeps (categorical; 1 to 40) |
| s | number of times that a tag was successfully identified (count; 0 to 40) |
| f | number of times that a tag was not identified (count; 0 to 40, by definition |
| r | success ratio (ratio; |
| tpo | Tag position (binary; near spine or near opening side) |
| tor | Tag orientation (binary; standing or laying) |
| sdi | Distance to nearest shelf side (ratio; cm) |
| bth | Thickness of book (ratio; cm) |
| bt3 | Thickness over three books (ratio; cm) |
| std | Spine tag density, determined by kernel smoothing (ratio; nr/cm) |
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