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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.

 
List of Articles


Volume 4 (2002)

Issue 1
Editors' Introduction  3
Edward Nersessian and Mark Solms
Obituary: Arnold Z. Pfeffer  5
Mark Solms
The Concept of the Self and the Self Representation  7
David Milrod, M.D.
Commentary by Jorge L. Ahumada  24
Jorge L. Ahumada
Commentary by Ronald Britton  26
Ronald Britton
Commentary by Jorge Canestri (Rome)  27
Jorge Canestri
How the Brain Creates the Self Commentary by Todd E. Feinberg, M.D.  31
Todd E. Feinberg, M.D.
From Self-Modeling to the Self Model: Agency and the Representation of the Self Commentary by Vittorio Gallese and Maria Alessandra Umiltà  35
Vittorio Gallese and Maria Alessandra Umiltà
Taking Freud's “Bodily Ego” Seriously Commentary by Maxine Sheets-Johnstone  41
Maxine Sheets-Johnstone
The Self and “Its” Vicissitudes Critique of Commentaries by Jaak Panksepp  44
Jaak Panksepp
Response to the Commentaries by David Milrod  61
David Milrod
Implicit Awareness of Deficit in Anosognosia? An Emotion-Based Account of Denial of Deficit  69
Oliver H. Turnbull, Karen Jones and Judith Reed-Screen
Self, Object, Neurobiology  87
Richard Brockman, M.D.
On the Microgenetic Account of the Embodied Mind: Comments on Brown's “Reflections and Prospects” Commentary by George Kurian  101
George Kurian
Commentary by Stephen E. Levick  104
Stephen E. Levick
The Microgenetic Revolution: Reflections on a Recent Essay by Jason Brown Commentary by Maria Pachalska  108
Maria Pachalska, Ph.D.
Jason W. Brown, Microgenetic theory: Reflections and prospects Commentary by Michel Weber  117
Michel Weber
The Dream Drugstore: Chemically Altered States of Consciousness: J. Allan Hobson. Cambridge, MA: MIT Press, 2001, $27.95  119
Brian Johnson
The Neuropsychology of Emotion: Joan Borod (Editor). Oxford University Press  121
Douglas F. Watt, Ph.D.
Research Digest The Neurobiology of Reward, Aggression and Pain  125
Oliver Turnbull
Issue 2
A Psychoanalytic View of Memory in the Light of Recent Cognitive and Neuroscience Research  131
Howard Shevrin, Ph.D.
Lingering Difficulties Distinguishing True from False Memories: A comment on Shevrin's Psychoanalytic View of Memory by Daniel M. Bernstein and Elizabeth F. Loftus  139
Daniel M. Bernstein and Elizabeth F. Loftus
Commentary by Bonnie Smolen, Ed.D.  141
Bonnie Smolen, ED.D.
Response to Commentaries  144
Howard Shevrin
Orbitofrontal Cortical Dysfunction and “Sensori-motor Regression” A Combined Study of fMRI and Personal Constructs in Catatonia  149
Georg Northoff, M.D., Ph.D., Bernhard Bogets, Frank Baumgart Leschinger, Cordula von Schmeling, Cynthia Lenz, Alexander Heinzel, Henning Scheich and Heinz Böker
Projective Identification: A Neuro-Psychoanalytic Perspective  177
Klaus Roeckerath
Projective Identification: How Does It Work?  187
Toni S. Greatrex, M.D.
Becoming Conscious and Schizophrenia  199
Donald Charles Grant, FRANZCP, MRCPsych.
The Human Brain and Photographs and Diagrams: J. Nolte and J. Angevine, 2nd edition. Mosby Publishing Inc., 2001, ISBN 0-323-01126-8  209
Douglas Watt, Ph.D.
The Executive Brain: Frontal Lobes and the Civilized Mind: E. Goldberg. Oxford: Oxford University Press, 2001  210
Oliver Turnbull, Ph.D.
Review on the Stockholm Neuro-Psychoanalysis Congress on Sexuality and Gender-September 2002  213
Maria Sonia Goergen, M.D.
Research Digest: Decision-Making, Emotion, and Cognitive Neuropsychiatry  215
Oliver Turnbull
Bulletin of the International Society for Neuro-Psychoanalysis  221
Iréne Matthis, M.D., Ph.D.
Research Unit Neuro-Psychoanalysis Department of Psychoanalysis  221
Filip Geerardyn
The Psychoanalysis/Neuroscience Study Groups of the Swedish Psychoanalytic Society  222
Iréne Matthis, Daniela Montelatici-Prawitz, Magnus Kihlbom and Lennart Bryngelson
The Toronto Chapter of the International Neuro-Psychoanalysis Society  222
James Deutsch, M.D.
The Neuro-Psychoanalysis Study Group of the Argentine Psychoanalytic Society  223
Eduardo B. Issaharoff, M.D.
Neuro-Psychoanalysis Study and Research Center of São Paulo  223
Yusaku Soussumi, M.D.
Neuro-Psychoanalysis Project, Anna Freud Centre, London  223
Mark Solms, Ph.D. and Iréne Matthis
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