Mildly Overparameterized ReLU Networks Have a Favorable Loss Landscape

التفاصيل البيبلوغرافية
العنوان: Mildly Overparameterized ReLU Networks Have a Favorable Loss Landscape
المؤلفون: Karhadkar, Kedar, Murray, Michael, Tseran, Hanna, Montúfar, Guido
سنة النشر: 2023
المجموعة: Computer Science
Mathematics
Statistics
مصطلحات موضوعية: Computer Science - Machine Learning, Mathematics - Combinatorics, Statistics - Machine Learning
الوصف: We study the loss landscape of both shallow and deep, mildly overparameterized ReLU neural networks on a generic finite input dataset for the squared error loss. We show both by count and volume that most activation patterns correspond to parameter regions with no bad local minima. Furthermore, for one-dimensional input data, we show most activation regions realizable by the network contain a high dimensional set of global minima and no bad local minima. We experimentally confirm these results by finding a phase transition from most regions having full rank Jacobian to many regions having deficient rank depending on the amount of overparameterization.
Comment: 40 pages
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2305.19510
رقم الأكسشن: edsarx.2305.19510
قاعدة البيانات: arXiv