The model wasn't tested in real world environment due to time limitations and student simulators don't model the all of the characteristics of the students. 

San Diego State University

Students often learn a huge chunks of information in the limited amount of time, sometimes a day before the exam which is not effective for the long term memorization.
Ebbinghaus was the first person to express forgetting curve in 1880. 
**Spaced repetition**, memorizing material with some intervals, has a positive effect on the information retention.
One possibility for performing spaced repetition is an e-learning environment. In this environment agent will change material and present them to the students which would be based on personal preferences. 

1. Motivation and Problem Description
2. Research Questions and Objectives
3. Scope

Introduction (Using deep reinforcement learning for personalizing review sessions on e-learning platforms with spaced repetition)

**Motivation**

1. Popularity of e-learning websites/applications
2. "Recommending content and personalizing the learning sessions is a highly sought after tasks on these platforms"
3. Explore the opportunities to substitute manually selected criteria

**Problem**

4. Deeper explore and extend work Accelerating Human Learning with Deep Reinforcement Learning by several modifications.



Motivation and Problem Description (Using deep reinforcement learning for personalizing review sessions on e-learning platforms with spaced repetition)

Scope  (Using deep reinforcement learning for personalizing review sessions on e-learning platforms with spaced repetition)

How does DRL perform compared to other baseline policies when we replace
the reward from being the exact probability of recalling each item,  to a realistically observable reward such as the average of the sum of correct outcomes in a sample of exercises?


What is the effect of replacing the same reward function with an RNN model
that predicts the reward (reward shaping)? We used Long Short Term
Memory (LSTM), a kind of recurrent neural network (RNN), which
has been shown to achieve good results for sequential prediction tasks

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