Dive deep into the intricacies of InceptionV3, a pivotal iteration in the Inception network series for CNN classifiers. Explore the key improvements and architectural modifications that set InceptionV3 apart from its predecessors. Learn about factorized convolutions, including symmetric and asymmetric approaches, and understand how these optimizations enhance both speed and accuracy. Examine the detailed layer architecture of InceptionV3, including Reduction A, Inception B, Inception C, and Reduction Blocks. Gain insights into the implementation of RMSProp optimizer, factorized 7x7 convolutions, BatchNorm in auxiliary classifiers, and label smoothing techniques. Discover how these enhancements contribute to preventing overfitting and improving overall network performance.