In unit one, we are introduced to the concept of the inverted index as a fundamental technology in information retrieval systems. The inverted index essentially is an index of words known as terms extracted from the document corpus that can be searched to find documents with the content that the user is looking for. Our text also introduces two extensions to the concept of the inverted index, the biword index and the positional index.
For your discussion assignment: • Select either the biword index or positional index • Provide a description of the index that you selected. As part of your description make sure that you describe why and how it is different than the inverted index. • Describe both where and when the index would it be used • Describe the advantage the index has over the inverted index You must post your initial response before being able to review other student’s responses. Once you have made your first response, you will be able to reply to other student’s posts. You are expected to make a minimum of 3 responses to your fellow student’s posts. Peer-Assessment Criteria *In addition to the criteria already posted in the Discussion Forum Did the posting describe either the byword index or positional index? Did the description explain how the index is different from the inverted index? Did the posting describe under what circumstances the index would be used? Did the posting describe the advantage that the index has over the inverted index?
