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Tip: Understanding Rank

PEP-Web Tip of the Day

When you do a search, you can sort the results bibliographically alphabetical or by “rank”. What is Rank?

Rank refers to the search engine’s “best guess” as to the relevance of the result to the search you specified. The exact method of ranking used varies a bit depending on the search. In its most basic level, when you specify a single search term, rank looks at the density of the matches for the word in the document, and how close to the beginning of the document they appear as a measure of importance to the paper’s topic. The documents with the most matches and where the term is deemed to have the most importance, have the highest “relevance” and are ranked first (presented first).

When you specify more than one term to appear anywhere in the article, the method is similar, but the search engine looks at how many of those terms appear, and how close together they appear, how close to the beginning of the document, and can even take into account the relative rarity of the search terms and their density in the retrieved file, where infrequent terms count more heavily than common terms.

To see a simple example of this, search for the words (not the phrase, so no quotes):

unconscious communications

Look at the density of matches in each document on the first page of the hits. Then go to the last page of matched documents, and observe the density of matches within the documents.

A more complex search illustrates this nicely with a single page and only 15 matches:

counter*tr* w/25 “liv* out” w/25 enact*

There are a lot of word forms and variants of the words (due to the * wildcards) above that can match, but the proximity (w/25) clause limits the potential for matching. What’s interesting here though is how easily you can see the match density decrease as you view down the short list.

The end result of selecting order by rank is that the search engine’s best “guess” as to which articles are more relevant appear higher on the list than less relevant articles.

For the complete list of tips, see PEP-Web Tips on the PEP-Web support page.

Soriano, J.J. (2018). Aportaciones de Freud y el psicoanálisis a la psiquiatría científica. Rev. Psicoanál. Asoc. Psico. Madrid, 83:531-555.
  

(2018). Revista de Psicoanálisis, 83:531-555

Aportaciones de Freud y el psicoanálisis a la psiquiatría científica

José Javier Fernández Soriano

El autor trata de demostrar que la principal contribución del psicoanálisis a la psiquiatría es su naturaleza científica. Partiendo de J. C. Reil (1759-1813), primer médico que consideró la psiquiatría como rama de la medicina, estudia los intentos de incluir la psiquiatría en la medicina anatomoclínica y los fracasos de las clasificaciones psiquiátricas more botanico; también muestra la supremacía de la hermenéutica psicoanalítica sobre la clásica de Dilthey y Jaspers. Se revisa la evolución del pensamiento de S. Freud desde la neurología anatomoclínica hasta el psicoanálisis. Freud comenzó rechazando la existencia de la lesión dinámica de Charcot e intentó escribir una Psicología para neurólogos; consideró que las neurosis tenían un sustrato orgánico y mantuvo la esperanza en una futura psiquiatría científica, a la que el psicoanálisis habría servido como introducción. Al final de su vida, Freud reconoció que los psicoanalistas también habían hecho sustanciales hallazgos biológicos y no podían evitar nuevos supuestos en esa materia. Con esta base, el autor refiere las modificaciones cerebrales que, según las técnicas de exploración in vivo, producen los tratamientos psicodinámicos. Para finalizar, cita algunos, de los muchos, trabajos que demuestran la eficacia de la psicoterapia psicoanalítica.

[This is a summary or excerpt from the full text of the article. PEP-Web provides full-text search of the complete articles for current and archive content, but only the abstracts are displayed for current content, due to contractual obligations with the journal publishers. For details on how to read the full text of 2016 and more current articles see the publishers official website.]

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