Marthe Elisabeth Aastveit

• Aastveit, Marthe Elisabeth; Cunen, Celine Marie Løken & Hjort, Nils Lid (2023). A new framework for semi-Markovian parametric multi-state models with interval censoring. Statistical Methods in Medical Research. ISSN 0962-2802. 32(6), p. 1053–1246. doi: 10.1177/09622802231160550. Full text in Research Archive Show summary

  There are few computational and methodological tools available for the analysis of general multi-state models with interval censoring. Here, we propose a general framework for parametric inference with interval censored multi-state data. Our framework can accommodate any parametric model for the transition times, and covariates may be included in various ways. We present a general method for constructing the likelihood, which we have implemented in a ready-to-use R package, smms, available on GitHub. The R package also computes the required high-dimensional integrals in an efficient manner. Further, we explore connections between our modelling framework and existing approaches: our models fall under the class of semi-Markovian multi-state models, but with a different, and sparser parameterisation than what is often seen. We illustrate our framework through a dataset monitoring heart transplant patients. Finally, we investigate the effect of some forms of misspecification of the model assumptions through simulations.

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• Aastveit, Marthe Elisabeth; Lenkoski, Alex & Thorarinsdottir, Thordis Linda (2026). Predicting partially observed survival curves via factor analysis with application to demand forecasting in short-term rental markets. Full text in Research Archive
• Aastveit, Marthe Elisabeth; Lenkoski, Alex & Thorarinsdottir, Thordis Linda (2026). Predicting partially observed survival curves via factor analysis with application to demand forecasting in short-term rental markets. Full text in Research Archive
• Aastveit, Marthe Elisabeth; Lenkoski, Alex & Thorarinsdottir, Thordis Linda (2025). Demand changes over time in the short-term rental market. Full text in Research Archive
• Aastveit, Marthe Elisabeth; Lenkoski, Alex & Thorarinsdottir, Thordis Linda (2025). Demand changes over time in the short-term rental market: Forecasting partially observed curves. Full text in Research Archive
• Aastveit, Marthe Elisabeth; Thorarinsdottir, Thordis Linda; Lenkoski, Alex & Pensar, Johan (2024). Demand changes over time in the short-term rental markets. Full text in Research Archive
• Neef, Linda Reiersølmoen; Aas, Kjersti & Aastveit, Marthe Elisabeth (2025). ALM-modell for Fremtind – Versjon 7: Brukermanual. Norsk Regnesentral. Full text in Research Archive
• Aas, Kjersti; Neef, Linda Reiersølmoen & Aastveit, Marthe Elisabeth (2025). ALM-modell for Fremtind – Versjon 7: Estimeringsmodulen. Norsk Regnesentral. Full text in Research Archive
• Neef, Linda Reiersølmoen; Aas, Kjersti & Aastveit, Marthe Elisabeth (2025). ALM-modell for Fremtind – Versjon 7: Teknisk rapport for passivamodulen. Norsk Regnesentral. Full text in Research Archive
• Aas, Kjersti; Neef, Linda Reiersølmoen & Aastveit, Marthe Elisabeth (2025). ALM-modell for Fremtind – Versjon 7: Teknisk rapport for balansemodulen. Norsk Regnesentral. Full text in Research Archive
• Aas, Kjersti & Aastveit, Marthe Elisabeth (2023). Simuleringsmodell for innskuddsforpliktelser versjon III: Brukermanual. Norsk Regnesentral. Full text in Research Archive
• Aas, Kjersti; Neef, Linda Reiersølmoen & Aastveit, Marthe Elisabeth (2023). ALM-modell for Fremtind - Versjon 5: Estimeringsmodulen. Norsk Regnesentral. Full text in Research Archive
• Neef, Linda Reiersølmoen; Aas, Kjersti & Aastveit, Marthe Elisabeth (2023). ALM-modell for Fremtind - Versjon 5: Brukermanual. Norsk Regnesentral. Full text in Research Archive
• Neef, Linda Reiersølmoen; Aas, Kjersti & Aastveit, Marthe Elisabeth (2023). ALM-modell for Fremtind - Versjon 5: Teknisk rapport for passivamodulen. Norsk Regnesentral. Full text in Research Archive
• Aas, Kjersti; Neef, Linda Reiersølmoen & Aastveit, Marthe Elisabeth (2023). ALM-modell for Fremtind - Versjon 5: Teknisk rapport for balansemodulen. Norsk Regnesentral. Full text in Research Archive
• Aastveit, Marthe Elisabeth; Rognebakke, Hanne Therese Wist & Aas, Kjersti (2022). Evaluering av XGBoost-modellen for prisestimater. Norsk Regnesentral. Full text in Research Archive
• Neef, Linda Reiersølmoen; Aas, Kjersti & Aastveit, Marthe Elisabeth (2021). ALM-modell for Fremtind - Versjon 3: Brukermanual. Norsk Regnesentral. Full text in Research Archive
• Aas, Kjersti; Neef, Linda Reiersølmoen & Aastveit, Marthe Elisabeth (2021). ALM-modell for Fremtind - Versjon 3: Estimeringsmodulen. Norsk Regnesentral. Full text in Research Archive
• Aas, Kjersti; Neef, Linda Reiersølmoen & Aastveit, Marthe Elisabeth (2021). ALM-modell for Fremtind - Versjon 3: Teknisk rapport for balansemodulen. Norsk Regnesentral. Full text in Research Archive
• Neef, Linda Reiersølmoen; Aas, Kjersti & Aastveit, Marthe Elisabeth (2021). ALM-modell for Fremtind - Versjon 3: Teknisk rapport for passivamodulen. Norsk Regnesentral. Full text in Research Archive

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