FW: page views

From: Lavoie,Brian (lavoie@oclc.org)
Date: Fri, May 28 1999

Message-ID: <72B89459DD2BD211B5CD0000F840094E1075BE@oa3-server.dev.oclc.org>
From: "Lavoie,Brian" <lavoie@oclc.org>
To: "'www-wca@w3.org'" <www-wca@w3.org>
Date: Fri, 28 May 1999 13:43:42 -0400
Subject: FW: page views


I think your suggestion is an excellent one, and I will make a note to
include this term in the next revision. Defining the structure of a website
is an interesting problem, and one that we have struggled with in analyzing
our web sample data. This problem came up for us when we were trying to
figure out a way to determine a webpage's "depth" in a site - i.e., how many
layers down in the site you had to go to reach it. Clearly, the fact that
there are often multiple ways to reach a page makes defining this depth
problematic. We decided to use a metric where we took the number of segments
in the shortest path to the page, but this was an ad hoc approach, not based
on any formal definition of the structure of a site. I would be very
interested in any research you have done on defining the structure of a


-----Original Message-----
From: Chris Tilt [mailto:chris@webcriteria.com]
Sent: Friday, May 28, 1999 1:01 PM
Subject: page views


I view your efforts as required and very beneficial to the
web community. As such, please consider a discussion of a
stronger claim with respect to page views. Your defintion
of Page View is consistent with advertising standards as
it relates to "impressions", however I think we need an
accompanying term and definition that allows characterization
of the structure and non-temporal state of a web site and
supersite. If we are limited to measure and describe only
the specific User Sessions or Episodes, we will have
difficulty defining and implementing metrics that allow
absolute and comparitive measurements of web sites.

For instance, how do we determine the number of unique
views on a site? Does a URI that resolves to a subset
of a page (via a ref to an embedded anchor) represent
a different "view"?

I claim that it is usefull to define a unique view so
that we can analyze a site structure. For example, when
navigating a site, we often find that there are multiple
ways to arrive at a similar view (in a static site, we
would say the pages are the same). In terms of graph
theory, this is like saying two edges (links) arrive at
the same vertex (page). By building such a graph, one can
make several interesting measurements and conclusions
that have been made for other types of graph problems.
This, however, relies on being able to describe a node
in the graph with some canonical name. In a simple site,
this is just the URI. For dynamic sites, this would be a
representation of the resource manifistation.

I would like to see us define a term like "unique page
view" that accounts for our experience of recognizing a
similar manifistation. Of course, the definition must
allow for some degree of difference since things like
banner ads, etc., are often rotating different images.
Our definition does not have to define the naming
system for resources, but a term would help some of us
to better communicate our work in this area.

Thank you for your time. Would anyone like to comment?

Cheers, Chris
Chris Tilt // CTO and VP of Engineering
WebCriteria, Inc. // Portland, OR, USA
chris@webcriteria.com // 503 225 2991