Description
Select a supplied position weight under explicit indexing.
Consumer-study records can describe exposure, recall, option availability and purchase-value bases. Local record arithmetic preserves a supplied study or billing convention without measuring preferences, establishing memory accuracy or determining consumer rights.
Select a supplied position weight under explicit indexing.
When to use this tool
Use Choice Option Position Weight when checking a supplied consumer-record, recall-window, choice or basket convention.
How to use the tool and how it works
- Enter position, weights, origin. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read weight. Use the output convention below.
Select a supplied position weight under explicit indexing. Require origin zero or one, position within weights and all weights nonnegative; return weights[position-origin].1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| position | Position | Required. Safe integer. |
| weights | Weights | Required. Array of finite number; minimum 0; maximum items 256. |
| origin | Origin | Required. Safe integer. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| weight | Caller-supplied weight on the stated observation, model or allocation basis. | Required. Finite number. |
{
"input": {
"position": 2,
"weights": [
0.2,
0.5,
0.3
],
"origin": 1
},
"output": {
"weight": 0.5
}
}Limitations and assumptions
- No preference, rank-bias correction or empirical weight model is inferred from the supplied vector.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use actual study data, validated measurement methods and applicable merchant/consumer rules for substantive behavioral or transaction conclusions.
References
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