the main idea of AI is to build systems that are inspired by human intelligence and not to simulate it. Therefore, I would suggest to find an idea in which you can develop systems inspired by human intelligence. You may think of Human Attention and Human uncertainty.
This is The map of the "Artificial intelligence" topic.
file topic_report.docx = 20 topics from 7496 articles which have words
ti=(artificial* intelligence* )
in their titles . Each topic is represented through 20 words and 20 thrases with which it is discussed in these articles. Really this terms are the names of methods, objects, properties, laws and so on for topic in question. In addition each topic has quotes from two articles in which it is most manifested.
file a1_basic.xlsm - articles with basic knowledge on the topic
file a3_novelty.xlsm - articles of last years potentially with novelty