@inproceedings{parahita-2026-cherish,
    title = "Cherish at {S}em{E}val-2026 Task 2: Enhancing {R}o{BERT}a-Based Models for Emotional Valence and Arousal Prediction in Ecological Essays with Personalized {PL}o{RA} and Temporal Embeddings",
    author = "Parahita, Cetta",
    editor = "Kochmar, Ekaterina  and
      Ghosh, Debanjan  and
      North, Kai  and
      Komachi, Mamoru",
    booktitle = "Proceedings of the 20th {I}nternational {W}orkshop on {S}emantic {E}valuation (2026)",
    month = jul,
    year = "2026",
    address = "San Diego, California, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.348/",
    pages = "2765--2770",
    ISBN = "979-8-89176-414-9",
    abstract = "This paper describes the system developed by Team Cherish for SemEval-2026 Task 2: Predicting Variation in Emotional Valence and Arousal over Time from Ecological Essays. Our approach models emotional dynamics in user-generated text by incorporating both personalization and temporal information into a transformer-based architecture. We use RoBERTa-large as the backbone encoder and enhance it with PLoRA and a temporal embedding module. Cherish{'}s model architecture is designed to maintain general semantic knowledge while subtly adapting to individual users and emotional shifts over varying temporal gaps. Our system achieved 13th place out of 29 teams in Subtask 1, obtaining a Pearson{'}s r composite score of 0.596 for valence prediction and 0.505 for arousal prediction. While the team also participated in Subtask 2a, technical issues during inference led to zero variance in predictions, resulting in an undefined (NaN) official correlation score."
}