Fabian Schmidt
2026
Probabilistic Depression Detection from Textual Time Series
Fabian Schmidt | Seyedehmoniba Ravan | Vladimir Vlassov
Findings of the Association for Computational Linguistics: ACL 2026
Fabian Schmidt | Seyedehmoniba Ravan | Vladimir Vlassov
Findings of the Association for Computational Linguistics: ACL 2026
Accurate and interpretable predictions of depression severity are essential for clinical decision support, yet existing models often lack uncertainty estimates and temporal interpretability. We propose PTTSD, a Probabilistic framework for Depression Detection from clinical interview utterance sequences that predicts PHQ-8 scores while modeling calibrated uncertainty. PTTSD includes sequence-to-sequence and sequence-to-one variants, both combining LSTMs, self-attention, and residual connections with Gaussian or Student’s-t output heads trained via negative log-likelihood. The sequence-to-sequence variant enables temporal analysis of how predictive confidence evolves over an interview, despite the target being a single session-level score. Evaluated on E-DAIC and DAIC-WOZ, PTTSD achieves competitive performance among text-only systems (e.g., MAE = 3.85 on E-DAIC, 3.55 on DAIC) and produces well-calibrated prediction intervals. Ablations confirm the value of attention and probabilistic modeling, while a three-part calibration analysis and qualitative case studies highlight the clinical relevance of uncertainty-aware prediction.
2025
Proceedings of the 5th Workshop on Multilingual Representation Learning (MRL 2025)
David Ifeoluwa Adelani | Catherine Arnett | Duygu Ataman | Tyler A. Chang | Hila Gonen | Rahul Raja | Fabian Schmidt | David Stap | Jiayi Wang
Proceedings of the 5th Workshop on Multilingual Representation Learning (MRL 2025)
David Ifeoluwa Adelani | Catherine Arnett | Duygu Ataman | Tyler A. Chang | Hila Gonen | Rahul Raja | Fabian Schmidt | David Stap | Jiayi Wang
Proceedings of the 5th Workshop on Multilingual Representation Learning (MRL 2025)
CFiCS: Graph-Based Classification of Common Factors and Microcounseling Skills
Fabian Schmidt | Karin Hammerfald | Henrik Haaland Jahren | Vladimir Vlassov
Proceedings of the 10th Workshop on Computational Linguistics and Clinical Psychology (CLPsych 2025)
Fabian Schmidt | Karin Hammerfald | Henrik Haaland Jahren | Vladimir Vlassov
Proceedings of the 10th Workshop on Computational Linguistics and Clinical Psychology (CLPsych 2025)
Common factors and microcounseling skills are critical to the effectiveness of psychotherapy. Understanding and measuring these elements provides valuable insights into therapeutic processes and outcomes. However, automatic identification of these change principles from textual data remains challenging due to the nuanced and context-dependent nature of therapeutic dialogue. This paper introduces CFiCS, a hierarchical classification framework integrating graph machine learning with pre-trained contextual embeddings. We represent common factors, intervention concepts, and microcounseling skills as a heterogeneous graph, where textual information from ClinicalBERT enriches each node. This structure captures both the hierarchical relationships (e.g., skill-level nodes linking to broad factors) and the semantic properties of therapeutic concepts. By leveraging graph neural networks, CFiCS learns inductive node embeddings that generalize to unseen text samples lacking explicit connections. Our results demonstrate that integrating ClinicalBERT node features and graph structure significantly improves classification performance, especially in fine-grained skill prediction. CFiCS achieves substantial gains in both micro and macro F1 scores across all tasks compared to baselines, including random forests, BERT-based multi-task models, and graph-based methods.
2024
JSI and WüNLP at the DIALECT-COPA Shared Task: In-Context Learning From Just a Few Dialectal Examples Gets You Quite Far
Nikola Ljubešić | Taja Kuzman | Peter Rupnik | Ivan Vulić | Fabian Schmidt | Goran Glavaš
Proceedings of the Eleventh Workshop on NLP for Similar Languages, Varieties, and Dialects (VarDial 2024)
Nikola Ljubešić | Taja Kuzman | Peter Rupnik | Ivan Vulić | Fabian Schmidt | Goran Glavaš
Proceedings of the Eleventh Workshop on NLP for Similar Languages, Varieties, and Dialects (VarDial 2024)
The paper presents the JSI and WüNLP systems submitted to the DIALECT-COPA shared task on causal commonsense reasoning in dialectal texts. Jointly, we compare LLM-based zero-shot and few-shot in-context inference (JSI team), and task-specific few-shot fine-tuning, in English and respective standard language, with zero-shot cross-lingual transfer (ZS-XLT) to the test dialects (WüNLP team). Given the very strong zero-shot and especially few-shot in-context learning (ICL) performance, we further investigate whether task semantics, or language/dialect semantics explain the strong performance, showing that a significant part of the improvement indeed stems from learning the language or dialect semantics from the in-context examples, with only a minor contribution from understanding the nature of the task. The higher importance of the dialect semantics to the task semantics is further shown by the finding that the in-context learning with only a few dialectal instances achieves comparable results to the supervised fine-tuning approach on hundreds of instances in standard language.
Knowledge Distillation vs. Pretraining from Scratch under a Fixed (Computation) Budget
Minh Duc Bui | Fabian Schmidt | Goran Glavaš | Katharina Von Der Wense
Proceedings of the Fifth Workshop on Insights from Negative Results in NLP
Minh Duc Bui | Fabian Schmidt | Goran Glavaš | Katharina Von Der Wense
Proceedings of the Fifth Workshop on Insights from Negative Results in NLP
Compared to standard language model (LM) pretraining (i.e., from scratch), Knowledge Distillation (KD) entails an additional forward pass through a teacher model that is typically substantially larger than the target student model. As such, KD in LM pretraining materially slows down throughput of pretraining instances vis-a-vis pretraining from scratch. Scaling laws of LM pretraining suggest that smaller models can close the gap to larger counterparts if trained on more data (i.e., processing more tokens)—and under a fixed computation budget, smaller models are able to process more data than larger models. We thus hypothesize that KD might, in fact, be suboptimal to pretraining from scratch for obtaining smaller LMs, when appropriately accounting for the compute budget. To test this, we compare pretraining from scratch against several KD strategies for masked language modeling (MLM) in a fair experimental setup, with respect to amount of computation as well as pretraining data. Downstream results on GLUE, however, do not confirm our hypothesis: while pretraining from scratch performs comparably to ordinary KD under a fixed computation budget, more sophisticated KD strategies, namely TinyBERT and MiniLM, outperform it by a notable margin. We further find that KD yields larger gains over pretraining from scratch when the data can be repeated under the fixed computation budget.