Chart Key
Average Rating
Average rating based on reviews
Views
Number of total page views
Comparisons
Number of times compared to another product
Reviews
Total number of reviews on IT Central Station
Followers
Number of followers on IT Central Station
The total ranking of a product, represented by the bar length, is based on a weighted aggregate score. For Views, Comparisons, Reviews, and Followers the score is calculated as follows: The product with the highest count in each area gets the highest available score of 17.5 points. Every other product gets assigned points based on its total in proportion to the #1 product in that area. For example, if a product has 80% of the number of reviews compared to the product with the most reviews then the product's score for reviews would be 17.5% (weighting factor) * 80% = 14. For Average Rating, the maximum score is 30 points awarded linearly based on our rating scale of 1-10. If a product has fewer than ten reviews, then its average rating is less statistically significant. In these cases, the point contribution for Average Rating is reduced (one-third reduction in points for products with 5-9 reviews; two-thirds reduction for products with fewer than five reviews). Reviews that are more than 24 months old, as well as those written by resellers, are completely excluded from the ranking algorithm.

Mainframe Application Development Reviews

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