Embeddings sentencepiecevocabulary equals

Development build. This page describes main, not a released package. The latest published Lodestar.Embeddings is 0.4.0 — read its documentation.

SentencePieceVocabulary.Equals

Value equality over the pieces, the types and the special ids.

public bool Equals(SentencePieceVocabulary other)

Parameters — other is the vocabulary to compare against.

Returns — bool, true when every piece, type and special id agrees.

Example — two vocabularies built from the same pieces.

using Lodestar.Embeddings.Tokenization;

SentencePiece[] pieces =
[
    new SentencePiece("<unk>", 0.0, 0),
    new SentencePiece("<s>", 0.0, 1),
    new SentencePiece("▁alpha", -1.5, 2),
    new SentencePiece("▁beta", -2.5, 3),
];
SentencePieceType[] types =
[
    SentencePieceType.Unknown,
    SentencePieceType.Control,
    SentencePieceType.Normal,
    SentencePieceType.Normal,
];
var vocabulary = new SentencePieceVocabulary(pieces, types, UnkId: 0, BosId: 1, EosId: -1, PadId: -1);

var same = new SentencePieceVocabulary(pieces, types, UnkId: 0, BosId: 1, EosId: -1, PadId: -1);

bool equal = vocabulary.Equals(same);  // => True

Remarks — the two arrays are compared element by element. A record's synthesised equality would compare them by reference, so two vocabularies loaded from the same spiece.model would be unequal — never the useful answer.

The special ids are part of the identity: two vocabularies with identical pieces and a different EosId produce different model input, so calling them equal would hide a real difference.

Applies to — net10.0, netstandard2.0.

See also — SentencePieceVocabulary.