This slide explain about identification between various points cloud that is generated by Leaser scanning. The identification is made by ICP(Interactive Closed Point) which uses SVD method.
This document discusses benchmarking deep learning frameworks like Chainer. It begins by defining benchmarks and their importance for framework developers and users. It then examines examples like convnet-benchmarks, which objectively compares frameworks on metrics like elapsed time. It discusses challenges in accurately measuring elapsed time for neural network functions, particularly those with both Python and GPU components. Finally, it introduces potential solutions like Chainer's Timer class and mentions the DeepMark benchmarks for broader comparisons.
The document summarizes a meetup discussing deep learning and Docker. It covered Yuta Kashino introducing BakFoo and his background in astrophysics and Python. The meetup discussed recent advances in AI like AlphaGo, generative adversarial networks, and neural style transfer. It provided an overview of Chainer and arXiv papers. The meetup demonstrated Chainer 1.3, NVIDIA drivers, and Docker for deep learning. It showed running a TensorFlow tutorial using nvidia-docker and provided Dockerfile examples and links to resources.
Variational Template Machine for Data-to-Text Generationharmonylab
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公開URL:https://openreview.net/forum?id=HkejNgBtPB
出典:Rong Ye, Wenxian Shi, Hao Zhou, Zhongyu Wei, Lei Li : Variational Template Machine for Data-to-Text Generation, 8th International Conference on Learning Representations(ICLR2020), Addis Ababa, Ethiopia (2020)
概要:Table形式の構造化データから文章を生成するタスク(Data-to-Text)において、Variational Auto Encoder(VAE)ベースの手法Variational Template Machine(VTM)を提案する論文です。Encoder-Decoderモデルを用いた既存のアプローチでは、生成文の多様性に欠けるという課題があります。本論文では多様な文章を生成するためにはテンプレートが重要であるという主張に基づき、テンプレートを学習可能なVAEベースの手法を提案します。提案手法では潜在変数の空間をテンプレート空間とコンテンツ空間に明示的に分離することによって、正確で多様な文生成が可能となります。また、table-textのペアデータだけではなくtableデータのないraw textデータを利用した半教師あり学習を行います。
Reinforcement Learning with few reward is challenge subject. This slide provides same method for reinforce learning with few reward and some latent variable model by VAE.
This document discusses maximum entropy deep inverse reinforcement learning. It presents the mathematical formulation of inverse reinforcement learning using maximum entropy. It shows that the objective is to maximize the log likelihood of trajectories by finding the reward parameters θ that best match the expected features under the learned reward function and the demonstrated trajectories. It derives the gradient of the objective with respect to the reward parameters, which involves the difference between expected features under the data distribution and the learned reward distribution. This gradient can then be used with stochastic gradient descent to learn the reward parameters from demonstrations.
This document summarizes a research paper on semi-supervised learning with deep generative models. It presents the key formulas and derivations used in variational autoencoders (VAEs) and their extension to semi-supervised models. The proposed semi-supervised model has two lower bounds - one for labeled data that maximizes the likelihood of inputs given labels, and one for unlabeled data that maximizes the likelihood based on inferred labels. Experimental results show the model achieves better classification accuracy compared to supervised models as the number of labeled samples increases.
OpenPose is a real-time system for multi-person 2D pose estimation using part affinity fields. It uses a bottom-up approach with convolutional neural networks to first detect body keypoints for each person and then assemble the keypoints into full body poses. OpenPose runs in real-time at 20 frames per second and uses part affinity fields to encode pairwise relations between body joints to group joints into full poses for multiple people.
Dr. Reio presented several papers at an AI meeting that explored topics including grounding topic models with knowledge bases, a survey of Bayesian deep learning, using recurrent neural networks for visual paragraph generation based on long-range semantic dependencies, and examining natural language understanding unit tests and semantic representations.
1) The document discusses deep directed generative models that use energy-based probability estimation. It describes using an energy function to define a probability distribution over data and training the model using positive and negative phases.
2) The training process involves using samples from the data distribution as positive examples and samples from the model's distribution as negative examples. The model is trained to minimize the difference in energy between positive and negative samples.
3) Applications discussed include deep energy models, variational autoencoders combined with generative adversarial networks, and adversarial neural machine translation using energy functions.
This document discusses the connection between generative adversarial networks (GANs) and inverse reinforcement learning (IRL). It shows that the objectives of GAN discriminators and IRL cost functions are equivalent, and GAN generators are equivalent to the IRL sampler objective plus a constant term. The derivative of the IRL cost function with respect to the cost parameters is also equivalent to the derivative of the GAN discriminator objective. Therefore, GANs can be used to perform IRL by training the discriminator to estimate the cost function and the generator to produce sample trajectories.
This document discusses using variational autoencoders for semi-supervised learning. It presents the general variational formula for calculating the log likelihood of data, and derives lower bound formulas for semi-supervised models. Specifically, it shows lower bound formulas for predicting a semi-supervised value z given inputs x and y, and for predicting both z and a supervised value y given only x as input. The key ideas are using an encoder-decoder model with latent variables z and y, and optimizing an objective function that combines supervised and unsupervised loss terms.
This slides explain about scanning picture feature points that is made by SIFT(Scale Invariant Feature Transform) which uses Gaussian Filter Difference Logic (DoG).
19. Discriminater Parameter by Loss Function
Real Example
Loss Function
Generated Example
Loss Function
Integrate Loss Function
min entorpy regulator for noize
Disciminator
20. Training Data and accuracy
use data set content size
Corpus IMDB movie reviews of max
16 words
1.4M
Sentim
ent
SST-full labeled sentence with
annotations
2737
SST-small labeled sentence 250
Lexicon sentiment labeled word 2700
IMDB For train/dev/test 16K
Tense TimeBank tense labeled sentences 5250
Training Data
Classification accuracy
21. Alogorithm for Parameters
of VAE Generater Discriminater
wake proc sleep proc
VAE gen-dis
Input unlabeled sentence
Input labeled sentence
z~ VAE c~p(c)
c~Discriminator(X)
Xt~LSTM(z,c,Xt-1)