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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.

Rascovsky, A. (1944). Deutsch, Helene: Some psychoanalytic observations in surgery. (Algunas observaciones psicoanalíticas en cirugía.) “Psychosomatic Medicine”, 1942, vol. IV, nọ 1, pág. 105.. Rev. psicoanál., 2(1):154-156.

(1944). Revista de Psicoanálisis, 2(1):154-156

Deutsch, Helene: Some psychoanalytic observations in surgery. (Algunas observaciones psicoanalíticas en cirugía.) “Psychosomatic Medicine”, 1942, vol. IV, n 1, pág. 105.

Review by:
Arnaldo Rascovsky

Señala la autora que estas observaciones no constituyen el resultado de un plan definido sino que son la recolección de experiencias y observaciones psicoanalíticas dado el alto porcentaje de pacientes analizados que han sufrido operaciones antes del análisis. En cambio, durante el tratamiento analítico éstas son más bien raras, pero durante el procedimiento se reavivan las situaciones quirúrgicas anteriores lo que permite su reconstrucción.

Plantea las reacciones psíquicas ante los procedimientos quirúrgicos en la forma siguiente:

1.   Psicología del individuo y su neurosis así como la situación psíquica que precede a una operación anticipada.

2.   El significado real de la operación per se, es decir, la amenaza de peligro, la suma de sufrimientos que pueden ocurrir, las esperanzas de curación, etc. En este sentido la relación del paciente con el órgano enfermo y la significación de éste para él, tanto en la realidad como simbólicamente son de importancia fundamental. Divide el acto operatorio en dos partes cada una de las cuales tiene un significado específico y diferente: a) la anestesia y b) el ataque quirúrgico sangriento en sí.

3.   La reacción postoperatoria.

4.   Finalmente, pero con no menor importancia, la relación emocional del paciente con el cirujano.

[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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