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### Description
tradeModel calls quantmod:::modelReturn.
Inside quantmod:::modelReturn, days.traded is calcualted by the following.
```r
Browse[2]> n
debug: days.traded tail(trade.signal)
…
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Based on our discussion, the next to-do list is `Tuning spaces `
> To-Do list from last meeting:
> - benchmark comparsion facetting (waiting for review)
> - ROC plots (waiting for review)
> - Tu…
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要注意算法介绍不宜太复杂,集中在算法的主要思想,比如为何引入这个算法,在这之前是怎么解决同一问题的,介绍点历史脉络(我们也想让本书不一样),以及简单实现,不然书籍可能陷入不可控。
比如一些算法或模型,但是要提及更加复杂的情况应该去看什么包或者文献(博客、论文)
MASS 广义模型
boot 自助法/重抽样 bootstrap
class knn K 近邻
cluste…
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# Tune and interpret decision trees for #TidyTuesday wind turbines | Julia Silge
Use tidymodels to predict capacity for Canadian wind turbines with decision trees.
[https://juliasilge.com/blog/wind-…
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@pommedeterresautee Since Issue #7 began as a discussion about _CRAN integration_, I thought it would be good to start this new thread that isolates and tracks the discussion about additional features…
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How do we know which variables are the best predictors for classification models? Are there coefficients similar to linear regression?
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As per Bernd's request, here is a reproducible example:
Problem: What happens if we get constant values for the performance measure in the initial design:
- Maybe set `on.learner.error` to `warn` …
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模型具体的代码如下:
```
---
title: "Cash on Delivery Rejection Prediction"
author: "Liam"
date: "2018/7/26"
output: html_document
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
…
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- [x] The repository's README explained how to download the Docker image.
- [x] The README explained how to build and retrieve the report.
- [] The report built without error and could be retrieved.…
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Great book!
Working with data.table does not always work:
```
pacman::p_load(data.table, regtools, qeML)
data(day1)
setDT(day1)
# page 17 , 1
data(mlb)
setDT(mlb)
w = mlb[, .(Height, W…