Bioz vSTARS


Bioz vStars – An Objective Rating for Non-Article Product Search Results:


The Bioz vStar rating is a multi-parameter data-driven algorithmic quality score that is based on multiple weighted parameters. The core parameter is the average quality rating (Bioz Stars) of all of a vendor’s products. Other Bioz vStar rating parameters include, vendor reputation, size, and product count. Bioz vStars distinguishes itself from Bioz Stars, in that the Bioz Star rating represents the quality rating of a single product, whereas Bioz vStars is the average quality rating of all of a vendor’s products.


The Bioz vStar rating algorithm factors in data that is extracted from scientific articles, together with relevant validation parameters.


Bioz vStar algorithmic rating parameters include, but are not limited to, the following


  1. Average number of mentions of all of a vendor’s products on Bioz
  2. Average recency of all of a vendor's product mentions on Bioz
  3. Average impact factor of all of a vendor’s product mentions on Bioz
  4. Number of unique product mentions on Bioz for the vendor
  5. Number of products that the vendor has on Bioz without any mentions
  6. Size of vendor
  7. Year vendor was established
  8. Search Result Frequency - The number of times vendor appeared in Bioz search results
  9. Vendor Name Preference - The number of times Bioz users visited this vendor's products details page
  10. Quick-View Interest - The number of times Bioz users quick-viewed this vendor's product
  11. Vendor Button Clicks - The number of times Bioz users clicked on this vendor buttons
  12. Normalization - Normalization of this vendor's products rating relative to its vendor's product category
  13. Standardization - Standardization of this vendor's products rating relative to its vendor's product category
  14. Manufacturer Factor (original manufacturer weighting adjustment)

How does Bioz vStars help researchers select the best reagent, kit, lab tool, or assay?


  1. There is no bias - Bioz vStars are calculated using a sophisticated multi-parameter mathematical model, with all vendors, products and assays evaluated based on the same set of criteria.
  2. The Bioz vStar rating cannot be bought – Bioz treats all vendors and all products equally. We don’t play favorites, and life-science vendors can’t pay to improve their product ratings.
  3. Bioz vStars was developed by researchers and mathematicians - The algorithm used to calculate each vendor’s Bioz vStar rating was developed out of a deep understand of the work life-science researchers perform. Hundreds of researchers, including Nobel Laureates, experienced mathematicians and data scientists have validated the accuracy of Bioz vStars.
  4. It’s as simple as counting to five - Ratings are given on a scale of zero to 5, to help researchers quickly assess a product’s quality or an assay’s popularity.

Does Bioz publish the details of how exactly the rating is calculated?


The information that we take into account is all publicly available. However, we don’t share the inner-workings of the Bioz vStars algorithm, so that we can maintain the rating’s neutrality and integrity. Moreover, we do not disclose the weight that we assign to each parameter, so that it isn’t possible for a vendor to artificially manipulate or boost their ratings through unfair advantage. Bioz Stars and Bioz vStars can never be artificially altered or boosted; in particular, they cannot be influenced, altered or increased as a result of payment of a fee, sponsorship, advertising, or other forms of payment. Transparency, objectivity, and zero bias are at the core of the Bioz ethos.


What do the vStars mean?



Do lab product vendors have to pay to receive a Bioz vStar rating?


Absolutely not! Bioz assigns a vStar rating to every product that we are able to identify as not being mentioned within a life science article. If you notice any information that you know to be incorrect, please contact Bioz and we will investigate the issue.


Bioz vStars are based on a deep analysis of hundreds of millions of life-science products that are mentioned in papers, which makes it a strong indicator of product and assay quality. Nevertheless, Bioz vStars is only one piece of information that you can use to evaluate whether a particular lab product is right for you. One should remember that the Bioz vStar rating is not specific to a single product, and that it is not directly based on being mentioned in articles. The Bioz vStar rating is based on the assumption that if a vendor has other high-quality products, then it is likely that its other products will also be high-quality, and vice versa. Bioz vStars guide researchers in their product evaluation process when a product doesn’t have any article mentions, and therefore, a Bioz Star rating is not associated with it. A product may not have any article mentions due to one or more of the following reasons: (1) It is a new product, (2) It is rarely used, (3) It is the type of product that researchers do not typically mention in articles. The Bioz vStar rating is a tool that provides a snapshot assessment, and should be considered alongside other information, including Bioz’s unique experimentation insights, that have been identified and structured from within article excerpts.