Extension of Milestone 1 (v0.1) to support a ranked retrieval system, in addition to the boolean retrieval system and incorporate disk-based inverted index.

Mandatory Requirements:

• building the index
• calculating document weights
• Querying the index
• Ranked Retrievals
• Printing ranked retrieval results

Category A:

• Variable Byte Encoding (In Consideration)
• SPIMI algorithm (In Consideration)
• Spelling Correction (In Consideration) MUST DO K-gram if done

Category B:

• K-gram index on disk (In Consideration)
• DSP Index (In Consideration)

Category C:

• Graphical User Interface