Data Collection

All the below files crawl data from fiverr and store it in a json format. The below files also contained the code to push the json files into a mongo database from where it is easy to perform operations. There are different templates of web for different categories of fiverr and hence, different files.

• Main2.py This crawler was used for Programming and Tech category and other similar.
• Main_format2.py This crawler is used for extracting information out of Advertising, Business and other similar categories. You will be able to recognise the categories if you will have a look into Fiverr.
• others.py This crawler was used for 'Others' category.
• username.py

Processing

• formatLIWC.py
  This code is used to convert the dataset into LIWC understandable format.

Case Specific Analysis

• Multiple_review_check.py
  This script checks for existence of multiple reviews made by a single user on a particular gig. It runs on the existing collection of gigs and creates a new collection which gives the gig-wise data on the number of reviews made by each user that has purchased the gig. It also stores the actual message present in those reviews.
• Multiple_data_analyse.py
  This script works on the collection made by the above file and finds out statistical data like the "Average Number of reviews given by a single user per gig" and "Average number of users making multiple reviews per gig".

Sentiment Analysis

• senti_dict.py
  Performs sentiment analysis on the reviews of the gigs using Senti Word Net lexicon. Modifies the gig json to add the new positive, negative and objective scores.

Review Graph Implementation

• review_final.py
  Implementation of the heterogenous review graph framework for spammer detection as suggested in [this paper] (https://www.cs.uic.edu/~gwang/papers/ICDM-2011-final.pdf).

Plotting

• plot.py
  Plots of 'fraction of gigs vs reviews'(linear and log-log), 'fraction of gigs vs rating'(linear and log-log), 'category-wise representation of average reviews, ratings and favourite count'
• pos_score_plot.py
  Plots of 'fraction of gigs vs positive score'.
• plot_negative.py
  Plots of ''fraction of gigs vs negative score'.

LIWC plotting

• After processing with formatLIWC.py get the LIWC scores and then running log_log.py will give all the value vs frequency in log-log scale in the same directory where it was run from.

Word-cloud plotting

• fiverr_wordcloud.py
  Makes a word-cloud of all the words used in the product reviews given in the file specified.