SmartMatch: Real-Time Semantic Retrieval for Translation Memory Systems
Ernesto Luis Estevanell Valladares, Salima Lamsiyah, Alicia Picazo-Izquierdo, Tharindu Ranasinghe, Ruslan Mitkov, Rafael Munoz
Abstract
Translation Memory (TM) systems are core components of commercial computer-aided translation (CAT) tools. However, traditional fuzzy matching methods often fail to retrieve semantically relevant content when surface similarity is low. We introduce SmartMatch, an open-source interactive demo and evaluation toolkit for TM retrieval that connects modern sentence encoders (including LLM-derived representations) and strong lexical/fuzzy baselines with a vector database, and exposes the end-to-end retrieval pipeline through a web-based UI for qualitative inspection and preference logging. The demo allows users to (i) enter a query segment, (ii) switch retrieval backends and embedding models, (iii) inspect top-k retrieved matches with similarity scores and qualitative cues, and (iv) observe end-to-end latency in real time. We provide a reproducible benchmark on multilingual TM data, reporting retrieval quality using reference-based MT metrics (COMET, BERTScore, METEOR, chrF) together with coverage and latency/throughput trade-offs relevant to real-time CAT workflows. On DGT-TM, encoder-based retrieval achieves full coverage (100%) with millisecond-level latency (p50/p90 ≤ 6–20 ms) and attains the strongest semantic-quality scores on the shared query set (e.g., BERTScore up to 0.91 at k=10), while BM25 remains a strong lightweight lexical baseline with very low latency. SmartMatch targets CAT researchers and tool builders and bridges recent advances in sentence encoders with the real-time constraints of translation memory retrieval.- Anthology ID:
- 2026.eacl-demo.36
- Volume:
- Proceedings of the 19th Conference of the European Chapter of the Association for Computational Linguistics (Volume 3: System Demonstrations)
- Month:
- March
- Year:
- 2026
- Address:
- Rabat, Marocco
- Editors:
- Danilo Croce, Jochen Leidner, Nafise Sadat Moosavi
- Venue:
- EACL
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 527–536
- Language:
- URL:
- https://preview.aclanthology.org/manual-author-scripts/2026.eacl-demo.36/
- DOI:
- Cite (ACL):
- Ernesto Luis Estevanell Valladares, Salima Lamsiyah, Alicia Picazo-Izquierdo, Tharindu Ranasinghe, Ruslan Mitkov, and Rafael Munoz. 2026. SmartMatch: Real-Time Semantic Retrieval for Translation Memory Systems. In Proceedings of the 19th Conference of the European Chapter of the Association for Computational Linguistics (Volume 3: System Demonstrations), pages 527–536, Rabat, Marocco. Association for Computational Linguistics.
- Cite (Informal):
- SmartMatch: Real-Time Semantic Retrieval for Translation Memory Systems (Estevanell Valladares et al., EACL 2026)
- PDF:
- https://preview.aclanthology.org/manual-author-scripts/2026.eacl-demo.36.pdf