Uncategorized
qt graphicsview zoom scrolling
https://stackoverflow.com/questions/19113532/qgraphicsview-zooming-in-and-out-under-mouse-position-using-mouse-wheel
Uncategorized
qt shift scroll horizontal direction
https://stackoverflow.com/questions/14610568/how-to-use-the-qgraphicsviews-translate-function
deep learning
paper review: “Fast DenseNet: Towards Efficient and Accurate Text Recognition with Fast Dense Networks”
https://arxiv.org/ftp/arxiv/papers/1912/1912.07016.pdf TLDR: key points this paper proposes to use densent+CTC for text recognition, and in that process propose some modifications to original densenet which are 1) new block, called Fast Dense Block(FDB) 2) FDenseNet-U: fast densenet + upsampling block 3) use convolution layer with stride 2 instead of maxpooling 4) Read more…
deep learning
paper review: “super convergence: very fast training of neural networks using large learning rates”
https://arxiv.org/pdf/1708.07120.pdf key idea in one sentence get min/max learning rate from LR range test, and run one cycle of cyclical learning rate at the start of training to efficiently train networks to find super convergence. Notes This paper uses a simplification of the second order Hessian-Free optimization to estimate optimal Read more…
tensorflow
tensorflow manual cross entropy loss calculation
In case you need a raw cross entropy loss calculation done not with logits but with the final value, and no reductions on the output whatsoever, here’s a code snippet for it.
deep learning
EfficientDet paper review
paper link: https://arxiv.org/pdf/1911.09070.pdf BiFPN multiple bifpn layers for scaling use depth-wise convolution layers bidirectional cross-scale connections + weighted feature fusion. weighted feature fusion different weight for each resolution features learnable weights summarize that there are three different approaches for doing weighted feature fusion unbounded fusion: because it is unbounded, can Read more…
linux
solving “‘grub-efi-amd64-signed’ package failed to install into /target/.” error while installing ubuntu 20.04
I encountered the infamous “‘grub–efi–amd64–signed‘ package failed to install into /target/.” error when installing ubuntu 20.04 along with preinstalled windows 10 in my desktop. Here are the setting environments gigabyte mainboard one SSD, one HDD windows 10 already installed on SSD I wanted to install ubuntu 20.04 on the HDD Read more…