AnalyticsNew French Relevancy Study Puts Yahoo & Google Tied For First But Search Overall As Disappointing

New French Relevancy Study Puts Yahoo & Google Tied For First But Search Overall As Disappointing

Jean Véronis has published the results of a relevancy study he conducted with
his students at the Université de Provence showing that, at least for French
searches, Google and Yahoo are tied on the relevancy front but that search
engines overall disappoint. However, he also takes a different spin on the stats
that give the search engines higher marks and puts Yahoo slightly ahead of
Google.

Jean summarizes the study
here,
with a more detailed PDF rundown
here.
Google, MSN and Yahoo along with Exalead, Voila and Dir.com were evaluated. In
summary, here’s what was done:

  • Students were assigned topics and allowed to craft queries in French
    however they thought best to search for information on those topics.
  • The first page of results from the search engines involved for each query
    were retrieved. Only French-language results were pulled back, and the porn
    filter at each service was used (and US Department Of Justice, take note —
    the study found these worked very well).
  • Students then reviewed the URLs retrieved to see if they were generally on
    the topic of the search. Each URL was scored to the relevancy of the topic, 0
    being worst, 5 being perfect.

Scores were:

  • Google/Yahoo: 2.3
  • MSN: 2.0
  • Exalead: 1.8
  • Dir: 1.4
  • Voila: 1.2

As you can see, no service gained above the 2.5 middle ground on the 0 to 5
scale. But at the suggestion of Jakob Nielsen, Jean did a
new
comparison
of scores, to take into account that users may be happy if they
get at least one good result per search, rather than 10 of them. So — if I
understand right — he calculated the average highest score for URLs on search
results pages.

In other words (and again, if I understand right), he looked at all the search
results pages from Yahoo, then looked at the highest scoring URL on each page,
then figured the average. Relevancy shoots up with this much tighter
examination, and Yahoo pushes slightly ahead of Google, while MSN and Exalead
also close the gap:

  • Yahoo: 4.5
  • Google 4.3
  • MSN: 4.2
  • Exalead: 4.1
  • Voila: 3.6
  • Dir: 3.4

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