Pouya Ghahramanian PhD Researcher · Data Scientist
Peer-reviewed

Publications

Peer-reviewed work on concept drift, online learning, and the adaptation of large language and time-series foundation models.

Google Scholar

Published
  1. 2026LACE

    LACE: Unsupervised Concept Drift Detection in Multi-Label Data Streams Through Label Cluster Evolution

    Gofralilar, M. K., Ghahramanian, P., & Can, F.

    ACM CIKM

    An unsupervised concept-drift detector for multi-label streams that cuts detection delay by 63.5% against the previous best unsupervised method, at a 0% missed-detection rate.

    DETECTION DELAY −63.5% · 0% MISSED · MULTI-LABEL STREAMS

  2. 2025LLM-OFA

    LLM-OFA: On-the-Fly Adaptation of Large Language Models to Address Temporal Drift Across Two Decades of News

    Ghahramanian, P., Bakhshi, S., & Can, F.

    ACM CIKM

    An On-the-Fly Adaptation framework and the Adaptimizer optimizer for continually adapting LLMs under temporal drift, evaluated across two decades of news.

    2 DECADES OF NEWS · CONTINUAL LLM ADAPTATION

  3. 2024AdaNEN

    A Novel Neural Ensemble Architecture for On-the-Fly Classification of Evolving Text Streams

    Ghahramanian, P., Bakhshi, S., Bonab, H., & Can, F.

    ACM TKDD

    AdaNEN — a neural ensemble for evolving data streams that improves classification accuracy by up to 8.8% across 13 benchmark datasets.

    ACCURACY +8.8% · 13 DATASETS · SINGLE-PASS

  4. 2023BELS

    A Broad Ensemble Learning System for Drifting Stream Classification

    Bakhshi, S., Ghahramanian, P., Bonab, H., & Can, F.

    IEEE Access

    A broad-learning ensemble for classification over drifting data streams.

    BROAD ENSEMBLE · DRIFTING STREAM CLASSIFICATION