Introduction

Types of assignments:

• Mathematical:
•  involving equations, symbols, operations and numbers.
• has a certain logic
• Textual
• involves paragraphs describing a topic
• Code
• has a certain format.
• Pictorial:
• involves a picture such as a graph
• Tabular
• involves a table to be filled

Approaching the issue: 

• Code
• The only case that has already been solved to great extent
• The piece of code will be run against some test cases
• The grade is given based on the importance (weight) of the test case as well as the number of cases that pass.
• The logic and the correctness of the code is not taken into account. Only the final answer is considered.
• tabular
• fairly easy to be done. 
• match the submitted table to the solution. 
• The grade is given based on the ratio of cells that match perfectly.
• Small mistakes is not taken into account. The student will get the mark if and only if the table fully matches.
• mathematical
• the assignment has to have a certain format to be submitted.
• not enough to match the final answer. The number can be generated by chance.
• build a logic tree?
• the logic has to be right. --> can be checked using test cases on each equation.
• has to start with the correct equation and end with the correct final answer.
• textual
• The assignment paragraph has to match in content and has to agree with the solution paragraph. 
• use discourse parser for extracting features and compare features?
• pictorial 
• Hardest to be solved. 
• Challenges: how to interpret a picture? what makes a certain picture acceptable and another one not?