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Lars Liden

3 accepted papers

2025

GUI-Actor: Coordinate-Free Visual Grounding for GUI Agents

NeurIPS 2025poster

One of the principal challenges in building VLM-powered GUI agents is visual grounding—localizing the appropriate screen region for action execution based on both the visual content and the textual plans. Most existing work formulates this as a text-based coordinate generation task. However, these a…

Cited by 0SourceScholar
2025

Latent Action Pretraining from Videos

ICLR 2025poster

We introduce Latent Action Pretraining for general Action models (LAPA), the first unsupervised method for pretraining Vision-Language-Action (VLA) models without ground-truth robot action labels. Existing Vision-Language-Action models require action labels typically collected by human teleoperators…

Cited by 20SourcePDFScholar
2022

Knowledge-Grounded Dialogue Generation with a Unified Knowledge Representation

NAACL 2022long

Knowledge-grounded dialogue systems are challenging to build due to the lack of training data and heterogeneous knowledge sources. Existing systems perform poorly on unseen topics due to limited topics covered in the training data. In addition, it is challenging to generalize to the domains that req…