Rumba Cuban Motion Weight Change Count

Count actual adjacent observed rumba support-foot changes with missing evidence retained rather than bridged; caller supplies expected count, no inference of Cuban hip motion from foot labels.

Description

Adjacent support-foot changes require evidence at both observations.

Adjacent support-foot changes require evidence at both observations. Missing observations should not be bridged.1

Enter aligned lists with at least two integer foot codes 0/1 and binary evidence flags plus integer expected changes 0–10000. Return known changes, unknown adjacent transitions and signed difference from target.

When to use Rumba Cuban Motion Weight Change Count

Use Rumba Cuban Motion Weight Change Count when you need to evaluate the supplied records under the calculation and evidence rules below. No Cuban hip-motion quality is inferred from foot labels.

Prepare the annotated dance, timing, rehearsal or inventory records requested. Supply caller rules, evidence flags and local reference values; distinguish beats, bars, counts and seconds.

How to use Rumba Cuban Motion Weight Change Count and understand its results

  1. Prepare the annotated dance, timing, rehearsal or inventory records requested. Supply caller rules, evidence flags and local reference values; distinguish beats, bars, counts and seconds.
  2. Enter observedSupportFootCodes, supportFootEvidenceFlags, callerExpectedWeightChanges using the field table and calculation rules, then run the tool.
  3. Read knownAdjacentWeightChangeCount, adjacentTransitionsWithoutEvidenceCount, signedKnownChangesMinusCallerTarget. The explanation below defines the units, signs, ordering and any flags or placeholder values.
  4. If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
Input fieldMeaningValue type; see rules belowRequirement
observedSupportFootCodesObserved support foot codeslist of numberRequired
supportFootEvidenceFlagsSupport foot evidence flagslist of numberRequired
callerExpectedWeightChangesCaller expected weight changesnumberRequired

Enter aligned lists with at least two integer foot codes 0/1 and binary evidence flags plus integer expected changes 0–10000. Return known changes, unknown adjacent transitions and signed difference from target.

knownChange=both observed and footCode differs

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output fieldMeaningValue type
knownAdjacentWeightChangeCountKnown adjacent weight change countnumber
adjacentTransitionsWithoutEvidenceCountAdjacent transitions without evidence countnumber
signedKnownChangesMinusCallerTargetSigned known changes minus caller targetnumber
json
{
  "input": {
    "observedSupportFootCodes": [
      0,
      0,
      1,
      1,
      0
    ],
    "supportFootEvidenceFlags": [
      1,
      1,
      1,
      0,
      1
    ],
    "callerExpectedWeightChanges": 2
  },
  "output": {
    "knownAdjacentWeightChangeCount": 1,
    "adjacentTransitionsWithoutEvidenceCount": 2,
    "signedKnownChangesMinusCallerTarget": -1
  }
}

Limitations and assumptions

No Cuban hip-motion quality is inferred from foot labels.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Level Change Low Mid High Distribution Counter: Low/mid/high counts require caller level annotations and explicit evidence. Unknown observations form a separate total. For a complementary task, use Tango Walk Beat Syncopation Checker: Footfall timing can be compared with a caller score while preserving permitted syncopation annotations. Off-beat timing is not automatically an error.

References

  1. Rumba Cuban Motion Weight Change Count — tool.io

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