We present a hierarchical text classification system for web content using the IAB (Interactive Advertising Bureau) taxonomy, with a focus on an orchestrator ensemble module, called MAESTRO (Model Aggregation Ensemble with Soft-weighted voTing for Robust Outcomes) that overcomes the limitations of individual classifiers. The ensemble orchestrator improves performance by selecting the most reliable classifier for each taxonomy category, achieving state-of-the-art results on IAB category classification (Macro-F1 up to 0.81 on Tier-1 categories). We also compare with previous systems in literature and discuss how our approach provides better coverage of the taxonomy and more robust classification across diverse domains. Strengths, limitations, and scalability of the system are analyzed.

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MAESTRO - Model Aggregation Ensemble with Soft-Weighted VoTing for Robust Outcomes in News Classification

  • Giovanni Forlenza,
  • Davide Perfetto,
  • Martina Buttarelli,
  • Luca Carrubbo,
  • Francesco Polese,
  • Valentina Rossi,
  • Maria Angela Pellegrino,
  • Antonio Lieto

摘要

We present a hierarchical text classification system for web content using the IAB (Interactive Advertising Bureau) taxonomy, with a focus on an orchestrator ensemble module, called MAESTRO (Model Aggregation Ensemble with Soft-weighted voTing for Robust Outcomes) that overcomes the limitations of individual classifiers. The ensemble orchestrator improves performance by selecting the most reliable classifier for each taxonomy category, achieving state-of-the-art results on IAB category classification (Macro-F1 up to 0.81 on Tier-1 categories). We also compare with previous systems in literature and discuss how our approach provides better coverage of the taxonomy and more robust classification across diverse domains. Strengths, limitations, and scalability of the system are analyzed.