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Sajad Movahedi

4 accepted papers

2026

Selective Rotary Position Embedding

ICLR 2026poster

Position information is essential for language modeling. In softmax transformers, Rotary Position Embeddings (\textit{RoPE}) encode positions through \textit{fixed-angle} rotations, while in linear transformers, order is handled via input-dependent (selective) gating that decays past key-value assoc…

Cited by 0SourceScholar
2025

Fixed-Point RNNs: Interpolating from Diagonal to Dense

NeurIPS 2025spotlight

Linear recurrent neural networks (RNNs) and state-space models (SSMs) such as Mamba have become promising alternatives to softmax-attention as sequence mixing layers in Transformer architectures. Current models, however, do not exhibit the full state-tracking expressivity of RNNs because they rely o…

Cited by 0SourceScholar
2025

Geometric Inductive Biases of Deep Networks: The Role of Data and Architecture

ICLR 2025spotlight

In this paper, we propose the *geometric invariance hypothesis (GIH)*, which argues that the input space curvature of a neural network remains invariant under transformation in certain architecture-dependent directions during training. We investigate a simple, non-linear binary classification proble…

2023

$\Lambda$-DARTS: Mitigating Performance Collapse by Harmonizing Operation Selection among Cells

ICLR 2023poster

Differentiable neural architecture search (DARTS) is a popular method for neural architecture search (NAS), which performs cell-search and utilizes continuous relaxation to improve the search efficiency via gradient-based optimization. The main shortcoming of DARTS is performance collapse, where the…

Cited by 22SourcePDFScholar