{
 "format": "wai.research.text-dictionary.rule/1",
 "question": "Does a Zstandard dictionary, its bytes charged to each sink, save bytes against plain Zstandard at the same level on text the repository may publish?",
 "levels": [3, 9, 19],
 "dictionary_bytes": [4096, 16384, 65536, 114688],
 "training": "Each family's dictionary is trained on the family's train split only, one training per size, and finalised per level.",
 "charges": {
  "dictionary": "The dictionary's full length, once per sink, as prior-carriage 17.2 charges a set: a set's bytes are counted in full for every sink that fetches it.",
  "pin": "Each object coded with the dictionary pays the bytes of a minimal SPEC 3.1 prior in its manifest, which an object coded plain does not carry.",
  "fallback": "An object whose dictionary form, with its pin, is not smaller than its plain form is sent plain and saves nothing, as prior-carriage 17.2 step 1 has it."
 },
 "workload": "One sink fetches every held-out object of the family once.",
 "go": {
  "cell": "A family, a level and a dictionary size pass when the net saving is at least 10 percent of the family's plain bytes and the median object's saving, its fallback applied, is above 0.",
  "family": "A family is GO when, at every level, at least one dictionary size passes.",
  "item": "The dictionary capability is justified for the families that are GO. When no family is GO the record closes the item."
 },
 "net_fraction_min": 0.10
}