OsmT: Bridging OpenStreetMap Queries and Natural Language with Open-source Tag-aware Language Models

• URL: http://arxiv.org/abs/2512.04738v1
• Date: Thu, 04 Dec 2025 12:24:36 GMT
• Title: OsmT: Bridging OpenStreetMap Queries and Natural Language with Open-source Tag-aware Language Models
• Authors: Zhuoyue Wan, Wentao Hu, Chen Jason Zhang, Yuanfeng Song, Shuaimin Li, Ruiqiang Xiao, Xiao-Yong Wei, Raymond Chi-Wing Wong,
• Abstract summary: We present OsmT, an open-source tag-aware language model for bridging natural language and structured query languages.<n>We introduce a Tag Retrieval Augmentation (TRA) mechanism that incorporates contextually relevant tag knowledge into the generation process.<n>We also define a reverse task, OverpassQL-to-Text, which translates structured queries into natural language explanations.
• Score: 30.29148893930439
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Bridging natural language and structured query languages is a long-standing challenge in the database community. While recent advances in language models have shown promise in this direction, existing solutions often rely on large-scale closed-source models that suffer from high inference costs, limited transparency, and lack of adaptability for lightweight deployment. In this paper, we present OsmT, an open-source tag-aware language model specifically designed to bridge natural language and Overpass Query Language (OverpassQL), a structured query language for accessing large-scale OpenStreetMap (OSM) data. To enhance the accuracy and structural validity of generated queries, we introduce a Tag Retrieval Augmentation (TRA) mechanism that incorporates contextually relevant tag knowledge into the generation process. This mechanism is designed to capture the hierarchical and relational dependencies present in the OSM database, addressing the topological complexity inherent in geospatial query formulation. In addition, we define a reverse task, OverpassQL-to-Text, which translates structured queries into natural language explanations to support query interpretation and improve user accessibility. We evaluate OsmT on a public benchmark against strong baselines and observe consistent improvements in both query generation and interpretation. Despite using significantly fewer parameters, our model achieves competitive accuracy, demonstrating the effectiveness of open-source pre-trained language models in bridging natural language and structured query languages within schema-rich geospatial environments.

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