Questions tagged [survival-analysis]

Survival analysis is concerned with modelling the time before subjects change state, typically time until death or failure. One key feature of such data is that they can be censored, that is, some subjects will not have changed state before the study ends.

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Time Series Classification with multiple rows per date

I have a time series data set with the lifecycle of 9000 different B2B sales leads. What I call lifecycle consists of a dataset with one registry per day for every different sales Lead identifier with ...
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50 views

Survival regression with major event that won't happen

I would like to do some survival regression about the duration before the "death" of an individual. The final purpose is to know, given an individual, how long it should take before he'll most likely "...
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260 views

What is out come cox regression in xgboost

I am running xgboost where objective is survival:cox and eval_metric is cox-nloglik. Y range from -800 to 800. However, predicted values are way to large in range from 10^3 to 10^13. I am not sure why ...
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43 views

How to get the survival duration prediction for each individual in the data by using the Kaplan-Meier method?

I am trying to learn how to use the Kaplan-Meier survival estimator model in the lifelines package. The documentation says that the KaplanMeierFitter.fit function ...
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33 views

How to do multivariate survival analysis on dataset having only categorical variables

I have a dataset where I have around 50 independent variables used to run survival analysis on the target variables. But out of these 50 variables, 46 variables are categorical variables i.e. having ...
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Variable selection methods in survival analysis

I am using two models for my research. One is the coxph regression model and other is survival trees. I have found the scikit-survival package in python which is able to identify contributing ...
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39 views

What kind of algorithm should I use to build ML model that can predict just next reoccurence of an event in the future (at irregular time interval)?

I'm quite new to machine learning and statistics. I've a dataset from some ecommerce sale's history. It's almost 2k instances, and features include personId (string), productCategory (string/...
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1answer
265 views

How to treat missing data for survival analysis

I have a dataset consisting of questionnaires from patient survey data. There are around 10 questions which are asked during several stages of treatment like during first day of visit, after a week, ...
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33 views

How to model manufacturing shift data with irregular production times?

Problem Setting: Let's say there are three shifts a day in a manufacturing plant. The plant suffers from irregular power supply thereby affecting in how it is functioning in time and the shift's ...
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1answer
70 views

Survival Analysis: Pseudo Observation Vs Stratified Cox Regression. Which one is better?

I've been looking into the Cox Regression method for Survival Analysis in Churn Prediction. Cox regression will allow us to determine the probability that a subscriber will unsubscribe after a time $t$...
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938 views

Predict task duration

I'm trying to create a regression model that predicts the duration of a task. The training data I have consists of roughly 40 thousand completed tasks with these variables: Who performed the task (~...
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4k views

How to use survival analysis for predictive maintenance for time series data?

So, I have a dataset with daily operating conditions for different machines and a flag saying if it failed or not. Here is a snapshot of the data. How can I use survival analysis or any other ...
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1k views

Machine Learning or Survival Analysis?

I am working on building prediction model for disk failures (time taken to occur a disk failure and what parameters could strongly affect disk failures). I am bit confused on- What data preprocessing ...
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435 views

Predicting purchase order?

What is the best option or rather options to predict how much order a customer will place in the future, say next 3 months on a monthly basis. Also will a customer place an order. I used ARIMA to ...
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1answer
877 views

Time dependent Classification problem

I am trying to solve a decision making problem. In it, information evolves and increases with time for each event observed, and the history of the event may be useful. The problem is as follows: in ...
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2answers
544 views

R plot(surv(), newdata=…) draws same lines many times - why?

I'm new to R and cannot make plotting work as desired. The problem is that R seems to draw the same four lines over and over again, redundantly. The details of the case I'm having are as follows. I ...
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466 views

Data driven approach to define a churn user

I'm trying to define a churn prediction model for an online service (betting/gambling). A lot of papers talk about churn analysis/prediction for telco companies where defining a churn user is ...
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230 views

What are available methods for modeling startup survival rates?

I am interested in modeling startup companies failure and success rates to describe what is the representative startup. I have 40 companies in a dataset. Each company is represented as a list of all ...