Irshad Samdani Mujawar

11 Questions 20 Answers 0 Followers

Questions related from Irshad Samdani Mujawar

What is best sampling mechanism for moving population which would be representative of population?

Hello everyone, I am having a moving population. As in everyday new subscribers are getting added in the population and few are leaving my subscription service. Sample I take on starting period...

10 May 2018 6,979 4 View

How to deal with rare event occurrence when applying logistic regression (Firth method also not performing well)?

Hello everyone, I have a logistic regression problem at my disposal. I need to build a model such a way that it predicts/classify accurately. The data I am having is having the response variable...

02 February 2017 9,121 9 View

How to adjust the item parameters calibrated by using IRT with the different populations?

I have an IRT question regarding calibration of the items. I am also aware of the item parameters are invariant to the sample using which they are estimated. Suppose there are three schools,...

26 December 2016 2,771 4 View

What is the best approach for extraction of knowledge structure from the data?

Hello everyone, We know that, mainly there are two approaches for construction of knowledge structure. Theory-driven and data-driven. Among data driven approaches there is Schrepp(1999) , the item...

26 August 2016 5,248 3 View

How the periodic assessment is done in adaptive learning process?

Hello, I have seen that few adaptive learning platform provide the periodic assessments as one of their modules so that students should retain whatever they have learned. It takes place after some...

17 August 2016 4,169 3 View

What is the best adaptive learning tool/ Intelligent Tutor System (ITS) available?

Hello, When I hit the adaptive learning or knowledge assessment systems in my google search , thousands of results appear. This is making me overwhelmed and confused at the same time. As I don't...

25 July 2016 8,690 9 View

Can anyone recommend software or packages for learning Bayesian network with missing data?

Hello,I want to construct a Bayesian network given the data. When the data is complete I am able to do it using an R package DAKS. But when the data is missing this package fails. Does anyone...

14 August 2015 5,033 11 View

Can anyone tell me how to create a knowledge structure?

Hello everyone,Most of you might have heard about ALEKS. This organisation has this recommendation system which help students to know about, what he/she knows? What he/she needs to learn? and what...

14 April 2015 2,813 5 View

What Data analysis do computerized adaptive testing companies provide for the results?

Hello everyone,I was wondering what kind of data analysis on the results do these companies which are into computerized adaptive testing provide?What kind of charts or plots on the test results...

24 February 2015 8,345 3 View

How would you determine the independent and dependent variable?

Hello, Suppose you have two variables X and Y. You know that there is significant correlation between them. However what you don't know which one is the cause (independent ) and which one is the...

14 November 2014 8,601 37 View

Are there any other methods (other than imputation) to calculate the item fit analysis in the presence of sparse data?

I am using mirt (an R-package) for the IRT( Item Response Theory) analysis. Current data, I am dealing with is sparse (contains missing value). Responses are missing because the test is adaptive....

05 September 2014 9,392 3 View