TSS Enrichment Gate

Calculate TSS enrichment and gate against a supplied minimum.

Description

TSS enrichment compares a central signal with background under a selected assay criterion.

TSS enrichment compares a central signal with background under a selected assay criterion.1

Calculate TSS enrichment and gate against a supplied minimum.

When to use TSS Enrichment Gate

Use this tool to calculate TSS enrichment and gate against a supplied minimum.

Prepare the already measured signals, counts, coordinates, fitted coefficients or sequence strings requested. Keep assay definitions, units, aligned lists and caller-selected thresholds consistent.

How to use TSS Enrichment Gate and understand its results

  1. Prepare the already measured signals, counts, coordinates, fitted coefficients or sequence strings requested. Keep assay definitions, units, aligned lists and caller-selected thresholds consistent.
  2. Enter tssCenterSignal, flankingBackgroundSignal, minimumEnrichment using the field table and calculation rules, then run the tool.
  3. Read tssEnrichment, enrichmentMargin, passesGate. 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
tssCenterSignalTSS center signalnumber; minimum: 0Required
flankingBackgroundSignalFlanking backgroundnumber; minimum: 0Required
minimumEnrichmentMinimum enrichmentnumber; minimum: 0Required

Enter nonnegative center/minimum and positive background. Return ratio, signed margin and inclusive gate.

ratio=center/background; margin=ratio−minimum

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

Output fieldMeaningValue type
tssEnrichmentTSS enrichmentnumber; minimum: 0
enrichmentMarginEnrichment marginnumber
passesGatePasses gateboolean
json
{
  "input": {
    "tssCenterSignal": 100,
    "flankingBackgroundSignal": 10,
    "minimumEnrichment": 8
  },
  "output": {
    "tssEnrichment": 10,
    "enrichmentMargin": 2,
    "passesGate": true
  }
}

Limitations and assumptions

No profile, intervals or assay-specific quality standard is inferred.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.

Alternative or Complementary methods

Use ATAC FRiP Gate: Gate ATAC quality by fraction of reads in peaks. For a complementary task, use FRiP Score: Calculate fraction of mapped reads in peaks.

References

  1. TSS Enrichment Gate — tool.io

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