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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.

Gedo, J.E. (1981). “The Air Trembles, for Demi-Gods Draw Near”. Am. Imago, 38(1):61-80.

(1981). American Imago, 38(1):61-80

“The Air Trembles, for Demi-Gods Draw Near”

John E. Gedo, M.D.

Publication of the correspondence between Freud and Jung (McGuire, 1974) has produced an extraordinary response among historians of psychoanalysis—a continuing stream of studies far exceeding the scholarly interest in Freud's published correspondence with any other figure. The present symposium forms part of that outpouring, although it has been organized on the basis of the rediscovery of Jung's remarkable letter of 1955 in which, in his own terms, he reaffirmed his sense of profound divergence between his psychological system and that of psychoanalysis.

I assume that I was invited to participate in this effort because of my long-standing interest in the intellectual history of psychoanalysis (see Gedo & Pollock, 1976). In fact, for many years I have looked upon the rupture between Freud and Jung as one key to conceptualizing the essence of our discipline; in this view, I have followed Philip Rieff (1966) whose pioneering work about these matters I once had occasion to discuss in some detail (Gedo, 1972). More recently, I have examined the Freud/Jung letters (Gedo, 1979) as well as other evidence in the public domain in order to define the dynamics of the failure of their attempted collaboration, and reached the conclusion that the clashing personal needs and intellectual positions that determined that failure had common sources in the protagonists' respective psychological depths. From slightly different perspectives, Stepansky (1976) and Decker (1980) independently reached rather similar conclusions, and in a wide ranging monograph Homans (1979) made extensive use of my formulations, in his preliminary version of 1974.

In

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