aiacademy: 期末專題分享

多聽多看多長智慧～

Group-17: NewsLeopard 電子豹

• 電子郵件開信預測

  • 平均開信%: 15%

  • 降低開信negative 感覺

• 中文 NLP
  • 切字
  • 結疤doc2tVec: 整段話轉成向量

• prediction

  • 以人為 unit

    • 當模型預測
    • skewed data: 收信超過100封　只佔1%
    • domain:
      • gamil
      • yahoo

• Result

  • 調　threshold 到　0.99 比較具有商業價值
  • 可以降低寄信頻率　減少支出

Group 18: 生命徵象異常測量值警示 1

• 看電影搂～

  • 長情的告白

• 生命徵象

  • 血壓
  • 血氧
  • 等…

• 資料平衡技巧

  • SMOTE
  • BalancedRandomForest
  • ADASYN
  • SMOTEENN
  • SMOTETomek

Group 19: 生命徵象異常測量值警示 2

這是高手高手高高手！！！

• 標記

  • 使用護理紀錄: 找出有標註的護理紀錄
  • 著名紀錄

• 生命現象

  • 高度相關
    • BMI
    • Age
• 9 種慢性疾病

• 也加入時間軸的

• Model

  • Random Forest
  • XGBoost
  • LightGbm
  • LightGbm
  • Hard Voting
  • Soft Voting

• 學理的判斷資訊

  • F1: 0.08,
  • Recall: 0,71

• SHAP Value

  • https://towardsdatascience.com/explain-your-model-with-the-shap-values-bc36aac4de3d

Group 20 英文發音矯正系統

• Jella

• Object

  • 念錯字
  • 改進目標
  • 透過 AI 來判斷哪種發音是異常，現階段幾乎都是人工閱聽
  • 工具先預先判斷異常的發音

• Speech Recognition, Speech To Text, Speaker Recognition

• 單音糾正
  • HMM, GMM

• Data Preparation:

  • 聲音: 波型

    • STFT

Group 21 智慧健身教練

• 深蹲

• open-pose

  • 取得人體節點
  • https://github.com/CMU-Perceptual-Computing-Lab/openpose

• 光流

• 3d-cnn

• time-distributed

  • https://medium.com/smileinnovation/how-to-work-with-time-distributed-data-in-a-neural-network-b8b39aa4ce00

Group 22 預測美元漲跌走勢及其價格區間

KPMG, 國泰

• Prediction intervals of us dollar index

• AI Investment Platform
  • ML/DL: Predcitve Models
  • Open Financial Data
• Currentes, Stock, Bonds
• Model Center
  • NN /DNN
  • CNN
  • ML

• POC Stage

  • US Dollar Index
  • 美元指數
    • EUR, JPY, GBP, CHF, CAD and SEK

• Mission

  • formulate price intervals output

• 選擇區間 unit

• daily

• weekly

• Learning Rate Scheduler

  • [https://towardsdatascience.com/learning-rate-scheduler-d8a55747dd90]{:target=”_back”}

Group 23 音樂曲風辨識 1

超棒～～～～～～～

• 辨識曲風

  • jazz, classical, hip-hpop, rock, and blue

• Data GTZAN

  • http://marsyas.info/downloads/datasets.html

• EDA

  • 每首歌切3s

  • 3s music 轉 stft
  • mei filter bank
  • melspectrum

• Melspectrum

  • 各種曲風看出來的都會有自己的特色

• Model

  • CNN
  • Xception
  • VGG16
    • VGG16 最棒棒

• 音色轉換

  • 鋼琴　-> 吉他

• 不同樂器的泛音

  • 都不一樣

• piano & guitar

  • guitar 高頻衰減比較少
    • guitar 會影響其他弦
  • piano 高頻衰減高
• HPSS

• tfrecod 可存音樂！！！　很快！！

• CycleGAN
• CQT 轉換
• unet ++

Goup 24 新聞推薦系統 1

• Collaborative Filtering

  • collaborative filtering is said to memory based
  • user based
  • item based

• Content based

• TF IDF

• Data Preprocessing

• user-based vs. item-based recommendation

• Similarity
  • Pearson Correlation
  • Mean Squared Distance

• N-Neighbors User Based Collaborative Filtering Algorithm

• hitratio & ndcg

  • https://zhuanlan.zhihu.com/p/38875570

Group 25 手勢辨識與指尖追蹤 1

• EDA

• GANerated Hands / Rendered Handpose Dataset

  • GANerated Hands
    • https://handtracker.mpi-inf.mpg.de/projects/GANeratedHands/
  • Rendered Hand pose Dataset
    • https://lmb.informatik.uni-freiburg.de/resources/datasets/RenderedHandposeDataset.en.html

Group 26 手勢辨識與指尖追蹤 2

• moel

  • RegNet
    • Different loss weight for 2D and 3D

• GeoConGan

• video Demo

  • 用手控制音樂撥放
  • 玩俄羅斯方塊

Group 27 新聞推薦系統 2

• non-negative matrix factorization

Group 28 音樂曲風辨識 2

• ai-音樂玩家

品味美、創造美

• Preprocess

  • music segementation: 8 s.

• 兩組都用　Melspectrum

  • resullt & discussion
    • 把　pop and rock 拿掉
    • 0.67 —> 0.87

  • normalization

    • min & max

• 創造美!

  • Genere Transfer

  • Change Pich
    • WGAN-GP
    • CycleGAN
  • Change Velocity
    • RNN

  • 把所有樂器都壓成鋼琴

  • 天空之城　轉 jazz

  • RNN Architecture

    • pitch change
    • cycleGAN 可做 —> music generation

Group 29 美國股債轉折點預測與投資組合交易回測 1

最棒棒！！！！

Group 30 美國股債轉折點預測與投資組合交易回測 2

• TA-lib (open source lib)

• 1年(252交易日)

• FB Prophet (open source)

Group 31 埋葬蟲移動軌跡偵測（Tracking）與行為偵測 (Action)

• 社會性生物追蹤 與互動行為預測

• 行為

  • attck
  • chase
  • escape
  • Wrestle
• object detection
  • yolov3, M2Det
  • M2Det
    • CFENet 對小物體駔最佳化
    • 比 Faster-CNN, yolo 還棒棒!
• object tracking
  • Sort, NASNet,

• Performance

  • IOU

• Improve recall

  • recall 高
    • 盡量框出埋葬蟲

• Object Classification

  • NASNet

• SORT + NASNet

• Behavior Prediction

  • detection + tracking + classification +　behavior prediction

Group 32 新聞推薦系統 News Recommendation System

• Objective

  • news 2018/01 ~ 2018/12
    • 最高點擊
      • July
      • 5 pm

• Open Data + Sentiment Analytics + User Click Log + News Content

  • 112 features

• Model

  • Wide & Deep
    • https://ai.googleblog.com/2016/06/wide-deep-learning-better-together-with.html
  • K-means
    • 人分群
    • group n
  • FM
    • https://towardsdatascience.com/thrive-and-blossom-in-the-mud-fm-model-for-recommendation-system-1-95707839e235
    • 計算人與人之見的相近程度

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Microsoft Azure Machine Learning

• AI global trend
• Clud or not (security)
• MS AI solution

Adopting Advanced Analytics and AI in your company

• Where do you see your company today ?

2020 3.9T

1. decision support
2. virutal agents
3. smart products
4. workflow sutomation

Digital Transformation

• Engage your customers

• Epower your employees

• Optimize your operations

• Transform your products

Momentum

• 194 billion / External Requesets made to Azure App Service

• 750 million / Azure Active Directory users

• 340 billion / Azure SQL query requests processed/day

• 188 billion / Hits to websites run on Azure Web App Service

Cybersecurity Reference Architecture

Azure Data Center

• Microsoft Cloud Infrastructure and Operations Security starts with physical data center

• Azure Compliance Engineering

  • Certification
    • ISO
    • SOC I
    • …

Continuous Compliance approach

Projec tBrainwave

• field-programmable gate array (FPGA)

ONNX and Azure Machine Learning: Create and accelerate ML models

• https://docs.microsoft.com/en-us/azure/machine-learning/service/concept-onnx

Azure Cognitive Services

• most comprehensive pre-trained AI
  • Decision
  • Speech
  • Language
  • vision
  • web search

IOT + Edge

• Azure IoT Edge

• Coud GeteWay + Insights + Actions

DevOps

• k8s

GPU

• Broad Range of GPU Scenarios in Azure

  • Visualization
  • Rendering
  • HPC/Simulation
  • Deep-Learning/AI

Autonomous

Azure Batch AI

Automated machine learning

• automated ML

Power BI with AI

-https://powerbi.microsoft.com/en-us/

• 丟掉、丟掉、丟掉、把不賺錢的都丟掉

• cloud first & mobile first

微軟小冰！

• https://www.bnext.com.tw/article/49211/microsoft-xiaoice-chat-bot-phone-call-demo

Microsoft Azure Data Lake

• 在 lake 裡面放各種資料，不同格式不同類型的資料。

Lambda architecture

-https://en.wikipedia.org/wiki/Lambda_architecture

Cortana

Power BI

• Power BI Desktop

• Power BI Free

• Power BI Pro

• Power BI Premium

SQL2016, 2019

• +R
• +python, +java

SQL Serve

• rxDTree & plot(create TreeView());