arXiv Computation and Language

PersianAnonymizer: Evaluating LLM-Labeled Training for Efficient NER-based Anonymization in Persian

The paper presents PersianAnonymizer, a method for anonymizing Persian customer chats by training a compact NER model using supervision from large language models (LLMs). Three instruction‑tuned LLMs—DeepSeek‑V3‑0324, GPT‑OSS‑120B, and Qwen3‑235B‑A22B‑Instruct‑2507—were used to generate span annotations, producing four corpora. A MatinaRoberta token‑classifier trained on each corpus achieved high macro‑F1 and Label Coverage Recall, with the OSS_ZeroShot‑derived NER labeling a 40K‑message test set in about two minutes on a single RTX 3090, demonstrating a practical, low‑cost approach to Persian data anonymization.

arXiv AI
Aug 20

Redakto - The Incognito Tab for LLMs

Redakto is a new tool designed to anonymize text before it is processed by large language models (LLMs). It offers state‑of‑the‑art redaction of personally identifiable information (PII) and pseudonymization, accessible via a web interface, REST APIs, and model context protocol hooks. The authors evaluate its performance on legal and medical datasets, showing that anonymized texts retain utility comparable to the originals, enabling LLM tasks without significant loss of effectiveness.

By Saurav Kumar Saha, Tom R\"ohr, Felix Bie{\ss}mann
arXiv Computation and Language
Sep 11

On the Impact of Anonymization on the Performance of Large Language Models

The paper systematically studies how anonymizing input data affects large language models (LLMs). Five prominent LLMs were evaluated on eleven benchmarks, comparing performance on original versus pseudonymized inputs. Results show that anonymization generally degrades performance, with larger drops for more capable models and task-dependent effects; reversible anonymization preserves entity uniqueness better than irreversible redaction, and prompting about anonymization offers no benefit.

By Tobias Deu{\ss}er, Max Hahnb\"uck, Lorenz Sparrenberg, Tobias Uelwer, Christian Bauckhage, Rafet Sifa
arXiv Machine Learning
Jun 5

Domain-Adapted Small Language Models with Hybrid Post-Processing: Achieving Cost-Efficient, Low-Latency Multi-Label Structured Prediction via LoRA Fine-Tuning on Scarce Data

arXiv:2606. 05781v1 Announce Type: new Abstract: Deploying frontier large language models (LLMs) for domain-specific structured evaluation tasks often incurs substantial latency, cost, and data privacy overhead.

By Srinivasan Manoharan, Dilipkumar Nallusamy, Sachin Kumar, Haifeng Wu