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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.

Garma (1944). Roheim, Géza: Transition rites. (Los ritos de transición.) “The psychoanalytic Quarterly”, tomo XI, pág. 336, 1942.. Rev. psicoanál., 1(3):471-472.

(1944). Revista de Psicoanálisis, 1(3):471-472

Roheim, Géza: Transition rites. (Los ritos de transición.) “The psychoanalytic Quarterly”, tomo XI, pág. 336, 1942.

Review by:
Garma

Arnold van Genneps describió que todo rito está compuesto por uno de separación, un rito de transición y otro de agregación. De ellos el autor estudia los ritos de transición de lía época del nacimiento y de la pubertd.

Comienza exponiendo la teoría dei Freud referente', a cómo la angustia provocada por la separación de la madre evoluciona y se transforma en un temor a perder-el pene, lo que es motivado en que tal órgano garantiza la reunión con la madre, a través del coito, con una mujer sustitutiva. Menciona también las investigaciones de I. Hermann sobre el instinto de agarrarse, que persiste durante toda la vida y que da origen a formaciones reactivas.

En los ritos de nacimiento de diferentes pueblos, el cordón umbilical por el hecho de ser la unión con la madre durante el período intrauternio, es tratado con una serie de consideraciones especiales, demostrando que de un modo latente es considerado como un sustituto de la madre. Los cuidados de que es objeto son para asegurar la felicidad futura del recién nacido.

En dichas prácticas rituales la relación primitiva con las personas exteriores es sustituida mediante identificaciones. Es como si se pensase que el niño tiene un “doble” protector en su cordón umbilical. Este “doble” le representa a él mismo y a la madre, de la que se ha tenido que separar por el nacimiento.

[This is a summary or excerpt from the full text of the book or article. The full text of the document is available to subscribers.]

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