Step 1: Don't panic
I was in a similar situation halfway through my MSc. I was in a panic, sure that my academic career was in ruins. My supervisor calmed me down, reminded that a negative result was still a result, and and told me that a for a master's degree, it was not strictly required that I make a scientific contribution or have a publication. In the worst case, in my thesis I would present my negative results, explain why this technique didn't work, and suggest what could be done differently by future researchers. (Once I was relaxed enough to think clearly, I came up with new things to try, and everything worked out grand.)
I suggest you discuss the "worst case scenario" with your supervisor; you'll probably find out it's not as bad as you think. Remember that this is research: positive results are not guaranteed.
Step 2: Think about why this technique isn't working.
I'm sure you've learned something about why your technique isn't working. That should give you some ideas for what to try next. If you're out of ideas, sit a friend down and explain everything to them. The friend doesn't need to know anything about machine learning; they're just a sounding board. The naive questions they ask may give you ideas. Maybe you need a week off to recharge your batteries.
Step 3: Try something new.
Take those new ideas you got in step 2, and apply them. But now that you're more experienced, think about how you could find out more quickly if the idea is feasible, so you can change tack again if needed.
answered Nov 1 '14 at 17:29
Research questions indicate what you will help answer through your research and provide structure for your dissertation.
They usually include both a main research question (which is the fundamental question you are exploring) and sub-questions (which assist you in answering the main question).
Types of research questions
Many different kinds of research questions exist. The kind you choose to use in your dissertation determines the type of research you will need to conduct and the research methods you will ultimately employ (e.g., interviews).
While it’s important to give some thought to the kinds of research question you will use, don’t get too hung up on the matter. The categories are often intertwined and it is possible to a question may actually be a combination of two or more.
What types of questions should you use?
You can use all of the above categories of questions in your dissertation. Your decision may be guided by the kind of research you want or are required to do. Nonetheless, bear in mind that not all research question types are suitable for a main research question . For example, a main question should not be evaluative.
It’s also important to remember that while some questions may fall clearly into one particular category, others may represent a combination of question types.
The research questions in a dissertation are divided into a main research question and a series of sub-questions:
- Main question
- Sub-question 1
- Sub-question 2
- Sub-question 3 etc.
Main research question
The main research question plays a leading role in your dissertation. It usually reflects a variety of research question categories.
Sub-questions are shorter, less complex questions. They generally fall squarely into one research question category.
These questions are useful for really getting to know the subject you are investigating. They are usually the starting point of research and will help you to get clear on the topic of your dissertation.
Descriptive questions are about the here and now. Their answers may describe a situation, concept or person based on your own observations or information you have collected.
Examples of descriptive questions
What is the world’s population?
What steps will the government take in the coming year to reduce the tax burden?
What measures are primary schools in the US taking for children with autism?
Comparative questions are useful if you want to explore the differences and similarities between two or more items.
Examples of comparative questions
What is the difference between sign language and body language?
What are the similarities of the political systems in the Netherlands and Russia?
Defining questions allow you to determine how your topic relates to the larger picture. They are useful for characterizing and classifying a phenomenon.
Examples of defining questions
How can the new subclass that is emerging in Germany be characterized?
How can socialists be classified within this emerging subclass?
Evaluative or normative questions are used when you want to determine the value of something (for example, how desirable, good, normal or usable it is), as they enable you to provide an opinion or judgment. They are also sometimes called ethical questions.
Examples of evaluative questions
It is desirable that workers be closely supervised?
What is the value of having a healthy work environment for employees?
Explanatory questions are designed to determine the cause of a problem. As a result, they are also called “why” questions (although they may instead use words such as “what” and “how”).
Examples of clarifying questions
What is cause of the high sickness rate at Apple headquarters?
Why is it that every substance melts at a certain temperature?
Why do leaves change color in the fall?
As the name implies, predictive questions are used to predict something that will occur in the future. You can use them to identify an expected consequence.
Examples of predictive questions
How many mortgages will fail if the economic crisis continues until 2020?
What is the new tax plan’s possible impact on elderly people living alone?
Will public transportation remain affordable in the future?
Framing questions are used when you want to identify new solutions to existing problems, with a focus on the near future. They are often phrased as “How can we…?”
In many cases, framing questions cannot be tackled until explanatory questions are answered. If your main question is framing, it’s therefore common to use some explanatory sub-questions.
Examples of framing/problem-solving/advisory questions
How can we ensure that the UK will have 50% fewer illiterates within the next three years?
How can we reduce youth unemployment?
One risk of using a framing question is that it may lead you to provide advice about how to solve a particular problem – which is not your job as a researcher. Your goal is instead to provide research that those involved in a problem can use to help solve it.
Advisory questions are helpful when your research is designed to make recommendations. This kind of research often involves preparing a separate advisory report for a particular client at the end of the dissertation process. In such cases, it can be useful to include at least one advisory sub-question.
Inferential questions can be used if you want to measure a certain effect and most often give rise to at least one hypothesis. They should be closed questions (e.g., with “yes” and “no” as possible answers).
Because inferential questions are designed to measure an effect, they are answered with the help of experiments. As such they are common in scientific research.
Examples of inferential questions
Do students obtain better exam scores if they take classes online instead of attending lectures in person?
What effect does conducting preventive alcohol checks have on the number of people who drive after drinking?
Types of questions to avoid using as your main question
Some research question categories do not lend themselves well for formulating a main research question.
- Evaluative questions, because they make it difficult to maintain your objectivity as a research.
- “Why” questions, as they are usually not specific enough.
- Inferential questions, given that they are too limited in scope.
If your main research question falls into one of these categories, revisit your problem statement and try to rephrase the question.