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Main Author: Gulgonul, Senol
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2604.10665
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author Gulgonul, Senol
author_facet Gulgonul, Senol
contents HeceTokenizer is a syllable-based tokenizer for Turkish that exploits the deterministic six-pattern phonological structure of the language to construct a closed, out-of-vocabulary (OOV)-free vocabulary of approximately 8,000 unique syllable types. A BERT-tiny encoder (1.5M parameters) is trained from scratch on a subset of Turkish Wikipedia using a masked language modeling objective and evaluated on the TQuAD retrieval benchmark using Recall@5. Combined with a fine-grained chunk-based retrieval strategy, HeceTokenizer achieves 50.3% Recall@5, surpassing the 46.92% reported by a morphology-driven baseline that uses a 200 times larger model. These results suggest that the phonological regularity of Turkish syllables provides a strong and resource-light inductive bias for retrieval tasks.
format Preprint
id arxiv_https___arxiv_org_abs_2604_10665
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle HeceTokenizer: A Syllable-Based Tokenization Approach for Turkish Retrieval
Gulgonul, Senol
Computation and Language
Information Retrieval
HeceTokenizer is a syllable-based tokenizer for Turkish that exploits the deterministic six-pattern phonological structure of the language to construct a closed, out-of-vocabulary (OOV)-free vocabulary of approximately 8,000 unique syllable types. A BERT-tiny encoder (1.5M parameters) is trained from scratch on a subset of Turkish Wikipedia using a masked language modeling objective and evaluated on the TQuAD retrieval benchmark using Recall@5. Combined with a fine-grained chunk-based retrieval strategy, HeceTokenizer achieves 50.3% Recall@5, surpassing the 46.92% reported by a morphology-driven baseline that uses a 200 times larger model. These results suggest that the phonological regularity of Turkish syllables provides a strong and resource-light inductive bias for retrieval tasks.
title HeceTokenizer: A Syllable-Based Tokenization Approach for Turkish Retrieval
topic Computation and Language
Information Retrieval
url https://arxiv.org/abs/2604.10665