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The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. . Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is availa
The World Press Freedom Index (WPFI) is an annual ranking of countries compiled and published by Reporters Without Borders (RSF) since 2002 based upon the organization's own assessment of the countries' press freedom records in the previous year. It intends to reflect the degree of freedom that journalists, news organizations, and netizens have ...
Rank of an abelian group. In mathematics, the rank, Prüfer rank, or torsion-free rank of an abelian group A is the cardinality of a maximal linearly independent subset. [1] The rank of A determines the size of the largest free abelian group contained in A. If A is torsion-free then it embeds into a vector space over the rational numbers of ...
The Democracy Indices by V-Dem are democracy indices published by the V-Dem Institute that describe qualities of different democracies. This dataset is published on an annual basis and is publicly available and free. [1] In particular, the V-Dem dataset is popular among political scientists and describes the characteristics of political regimes ...
Comprobado (hosted by Maldita.es). [138] Miniver.org: the first fact-checking web in Spain, launched in 2017, with the purpose of debunking fake news. Accredited by Google as fact-checking organization. [139] Newtral: Spanish fact-checking organization founded by journalist Ana Pastor from LaSexta.
Internet marketing. Search engine optimization (SEO) is the process of improving the quality and quantity of website traffic to a website or a web page from search engines. [1][2] SEO targets unpaid traffic (known as "natural" or "organic" results) rather than direct traffic or paid traffic. Unpaid traffic may originate from different kinds of ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 19 September 2024. This article is a list of freedom indices produced by several non-governmental organizations that publish and maintain assessments of the state of freedom in the world, according to their own various definitions of the term, and rank countries as being free, partly free, or using ...
Dave Kerby (2014) recommended the rank-biserial as the measure to introduce students to rank correlation, because the general logic can be explained at an introductory level. The rank-biserial is the correlation used with the Mann–Whitney U test, a method commonly covered in introductory college courses on statistics. The data for this test ...