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Benedikt Alkin

5 accepted papers

2025

MIM-Refiner: A Contrastive Learning Boost from Intermediate Pre-Trained Masked Image Modeling Representations

ICLR 2025poster

We introduce MIM (Masked Image Modeling)-Refiner, a contrastive learning boost for pre-trained MIM models. MIM-Refiner is motivated by the insight that strong representations within MIM models generally reside in intermediate layers. Accordingly, MIM-Refiner leverages multiple instance discriminatio…

Cited by 0SourcePDFScholar
2025

Parameter Efficient Fine-tuning via Explained Variance Adaptation

NeurIPS 2025poster

Foundation models (FMs) are pre-trained on large-scale datasets and then fine-tuned for a specific downstream task. The most common fine-tuning method is to update pretrained weights via low-rank adaptation (LoRA). Existing initialization strategies for LoRA often rely on singular value decompositio…

Cited by 13SourceScholar
2025

Vision-LSTM: xLSTM as Generic Vision Backbone

ICLR 2025poster

Transformers are widely used as generic backbones in computer vision, despite initially introduced for natural language processing. Recently, the Long Short-Term Memory (LSTM) has been extended to a scalable and performant architecture - the xLSTM - which overcomes long-standing LSTM limitations via…

2024

Contrastive Tuning: A Little Help to Make Masked Autoencoders Forget

AAAI 2024technical

Masked Image Modeling (MIM) methods, like Masked Autoencoders (MAE), efficiently learn a rich representation of the input. However, for adapting to downstream tasks, they require a sufficient amount of labeled data since their rich features code not only objects but also less relevant image backgrou…

2024

Universal Physics Transformers: A Framework For Efficiently Scaling Neural Operators

NeurIPS 2024poster

Neural operators, serving as physics surrogate models, have recently gained increased interest. With ever increasing problem complexity, the natural question arises: what is an efficient way to scale neural operators to larger and more complex simulations - most importantly by taking into account di…