Build Binary Classification Models in One Integrated Offering

Provides a toolkit for building predictive models in one integrated offering. Contains infrastructure functionalities such as data exploration and preparation, missing values treatment, outliers treatment, variable derivation, variable selection, dimensionality reduction, grid search for hyperparameters, data mining and visualization, model evaluation, strategy analysis etc. 'creditmodel' is designed to make the development of binary classification models (machine learning based models as well as credit scorecard) simpler and faster. The references including: 1.Anderson, R. (2007). The credit scoring toolkit: Theory and practice for retail credit risk management and decision automation. 2.Find, S. (2012, ISBN13: 9780230347762). Credit scoring, response modelling and insurance rating:A practical guide to forecasting consumer behaviour.


automodel is a free and open source automated modeling R package designed to help model developers improve model development efficiency and enable many people with no background in data science to complete the modeling work in a short time.Let them focus more on the problem itself and allocate more time to decision-making.

automodel covers various tools such as data preprocessing, variable processing/derivation, variable screening/dimensionality reduction, modeling, data analysis, data visualization, model evaluation, strategy analysis, etc. It is a set of customized "core" tool kit for model developers.

automodel is suitable for machine learning automated modeling of classification targets, and is more suitable for the risk and marketing data of financial credit, e-commerce, and insurance with relatively high noise and low information content.

Installation

# install.packages("devtools")
devtools::install_github("FanHansen/automodel")

Example

require(automodel)
if (!dir.exists("c:/test_model")) dir.create("c:/test_model")
setwd("c:/test_model")
#set parameters
LR.params = lr_params(
bins_control = list(bins_num = 8,bins_pct = 0.05, b_chi = 0.02, 
b_odds = 0.1,b_psi = 0.02,b_gb = 0.15,mono = 0.3,gb_psi = 0.05,kc = 1),
score_card = TRUE, cor_p = 0.7, iv_i = 0.02, psi_i = 0.1 )
XGB.params = xgb_params(nrounds = 10000, 
params = list(max.depth = 4, eta = 0.01, min_child_weight = 50, subsample = 0.5, colsample_bytree = 0.6, gamma = 0, max_delta_step = 1, eval_metric = "auc", objective = "binary:logistic"), early_stopping_rounds = 300)
#training model
Lending_model = training_model(
dat_train = lendingclub,
model_name = "lendingclub", target = "loan_status", occur_time = "issue_d",
ex_cols = c("last_credit_pull_d", "next_pymnt_d", "prncp|recoveries|rec_|funded_amnt|pymnt|fee$"),
obs_id = "id", prop = 0.7,
feature_filter = list(filter = c("IV", "PSI", "COR", "XGB"), cv_folds = 1, iv_cp = 0.02,
psi_cp = 0.1, cor_cp = 0.8,xgb_cp = 0, hopper = TRUE), algorithm = list("LR", "XGB"),
LR.params = LR.params, XGB.params = XGB.params,
parallel = FALSE,
save_pmml = FALSE,
 plot_show = FALSE,
seed = 46)

News

Reference manual

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install.packages("creditmodel")

1.1.0 by Dongping Fan, 2 days ago


https://github.com/FanHansen/creditmodel


Report a bug at https://github.com/FanHansen/creditmodel/issues


Browse source code at https://github.com/cran/creditmodel


Authors: Dongping Fan [aut, cre]


Documentation:   PDF Manual  


AGPL-3 license


Imports data.table, xgboost, dplyr, glmnet, gridExtra, ggplot2, gbm, randomForest, car, foreach, doParallel, ggcorrplot, pmml, XML, rpart, sqldf, stringr

Suggests knitr, testthat


See at CRAN