SearchRankLostImpressionShare fuzziness

[Devesh Parekh]

I'm running experiments and analyzing how my changes affect impressions by requesting Impressions and SearchRankLostImpressionShare from the reporting endpoint. I usually get pretty precise numbers in these reports like "13.08%", but I sometimes get really fuzzy numbers like "> 90%", which is not amenable to analysis.

Is there a reason why the number is so imprecise? If not, can you replace it with a more precise number? Better yet, can you report SearchRankLostImpressions directly instead of SearchRankLostImpressionShare, which is not very useful in cases where I have 0 impressions?

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Devesh

[Danial Klimkin]

Hello Devesh,

We do not plan to expose the raw impression numbers on search results in the AdWords API. As you mentioned, this metric can't be reported precisely with very small or zero actual impressions.

-Danial, AdWords API Team.

[Devesh Parekh]

Thanks, Danial.

While I might understand not reporting this metric precisely with very small or zero actual impressions, the "> 90%" number seems unrelated to the number of impressions reported. For example, I have one row that shows 1 impression and "66.67%" rank lost impression share. I have another row with 1702 impressions and "> 90%" rank lost impression share.

The "> 90%" number seems to displayed if and only if the rank lost impression share is above 90%. I don't see any rows that have precise rank lost impression share greater than 90. I'm trying to understand why AdWords will happily report "88.89%" lost impression share (as one example I've seen) but won't tell me anything like "90.11%" lost impression share.

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Devesh

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[Danial Klimkin]

Hello Devesh,

This is a product-level behavior, not specific to the API. I believe, ">90%" means most of the impressions are "lost" anyway and the actual number is not very useful.

It is unlikely this will be changed in the near future.

-Danial, AdWords API Team.