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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.

Sterba, B. (1929). Jung, C. G.: Die Beziehungen zwischen dem Ich und dem UnbewuƟten. Reichl-Verlag, Darmstadt 1928.. Internationale Zeitschrift für Psychoanalyse, 15(1):137.

(1929). Internationale Zeitschrift für Psychoanalyse, 15(1):137

REFERATE: Aus der psychiatrisch-neurologischen Literatur

Jung, C. G.: Die Beziehungen zwischen dem Ich und dem Unbewußten. Reichl-Verlag, Darmstadt 1928.

Review by:
Bally Sterba

Dieses Buch zeigt deutlich die Linie, auf der sich Jung — wie wir glauben, vom unmittelbaren Verständnis für die realen Tatbestände weg — entwickelt hat. Die Schrift stellt den Niederschlag der Erfahrungen Jungs an den modernen Neurosenformen dar, wie wir sie alle in unserer Praxis immer mehr die alten verdrängen sehen. Die Krankheitsbilder in ihrem ganzen vielgestaltigen Aufbau werden mit psychologischem Scharfblick geschaut; auch hat Jung ein therapeutisches Vorgehen ausgebildet, das Parallelen mit unserer Ichanalyse aufweist. Dagegen entwickelt er an Stelle einer fruchtbaren libidogenetischen und ökonomischen Anschauung eine Betrachtungsweise, die in eine dämonologische Verpersönlichung gewisser Anteile unserer Psyche mündet.


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