**YOLOv3** is a real-time, single-stage object detection model that builds on [YOLOv2](https://paperswithcode.com/method/yolov2) with several improvements. Improvements include the use of a new backbone network, [Darknet-53](https://paperswithcode.com/method/darknet-53) that utilises residual connections, or in the words of the author, "those newfangled residual network stuff", as well as some improvements to the bounding box prediction step, and use of three different scales from which to extract features (similar to an [FPN](https://paperswithcode.com/method/fpn)).

**PixelRNNs** are generative neural networks that sequentially predicts the pixels in an image along the two spatial dimensions. They model the discrete probability of the raw pixel values and encode the complete set of dependencies in the image. Variants include the Row [LSTM](https://paperswithcode.com/method/lstm) and the Diagonal [BiLSTM](https://paperswithcode.com/method/bilstm), that scale more easily to larger datasets. Pixel values are treated as discrete random variables by using a [softmax](https://paperswithcode.com/method/softmax) layer in the conditional distributions. Masked convolutions are employed to allow PixelRNNs to model full dependencies between the color channels.

PixelRNN

Pixel Recurrent Neural Networks

YOLOv3

YOLOv3: An Incremental Improvement

**FBNet Block** is an image model block used in the [FBNet](https://paperswithcode.com/method/fbnet) architectures discovered through [DNAS](https://paperswithcode.com/method/dnas) [neural architecture search](https://paperswithcode.com/method/neural-architecture-search). The basic building blocks employed are [depthwise convolutions](https://paperswithcode.com/method/depthwise-convolution) and a [residual connection](https://paperswithcode.com/method/residual-connection).

Source	YOLOv3: An Incremental Improvement
Year	2000
Data Source	CC BY-SA - https://paperswithcode.com