// Copyright 2015, Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @name Bid To Impression Share
*
* @overview The Bid To Impression Share script adjusts your bids and allows you
* to steer ads in an advertiser account into a desired impression share in
* the search results. See
* https://developers.google.com/google-ads/scripts/docs/solutions/bid-to-impression-share
* for more details.
*
* @author Google Ads Scripts Team [adwords...@googlegroups.com]
*
* @version 2.0.1
*
* @changelog
* - version 2.0.1
* - Fixed logic when determining which keywords to raise and lower.
* - version 2.0.0
* - Refactored to target impression share rather than position.
* - version 1.0.1
* - Refactored to improve readability. Added documentation.
* - version 1.0
* - Released initial version.
*/
// Ad impression share you are trying to achieve, representated as a percentage.
var TARGET_IMPRESSION_SHARE = 0.5;
// Once the keywords fall within TOLERANCE of TARGET_IMPRESSION_SHARE,
// their bids will no longer be adjusted. Represented as a percentage.
var TOLERANCE = 0.05;
// How much to adjust the bids.
var BID_ADJUSTMENT_COEFFICIENT = 1.05;
/**
* Main function that lowers and raises keywords' CPC to move closer to
* target impression share.
*/
function main() {
raiseKeywordBids();
lowerKeywordBids();
}
/**
* Increases the CPC of keywords that are below the target impression share.
*/
function raiseKeywordBids() {
var keywordsToRaise = getKeywordsToRaise();
while (keywordsToRaise.hasNext()) {
var keyword = keywordsToRaise.next();
keyword.bidding().setCpc(getIncreasedCpc(keyword.bidding().getCpc()));
}
}
/**
* Decreases the CPC of keywords that are above the target impression share.
*/
function lowerKeywordBids() {
var keywordsToLower = getKeywordsToLower();
while (keywordsToLower.hasNext()) {
var keyword = keywordsToLower.next();
keyword.bidding().setCpc(getDecreasedCpc(keyword.bidding().getCpc()));
}
}
/**
* Increases a given CPC using the bid adjustment coefficient.
* @param {number} cpc - the CPC to increase
* @return {number} the new CPC
*/
function getIncreasedCpc(cpc) {
return cpc * BID_ADJUSTMENT_COEFFICIENT;
}
/**
* Decreases a given CPC using the bid adjustment coefficient.
* @param {number} cpc - the CPC to decrease
* @return {number} the new CPC
*/
function getDecreasedCpc(cpc) {
return cpc / BID_ADJUSTMENT_COEFFICIENT;
}
/**
* Gets an iterator of the keywords that need to have their CPC raised.
* @return {Iterator} an iterator of the keywords
*/
function getKeywordsToRaise() {
// Condition to raise bid: Average impression share is worse (less) than
// target - tolerance
return AdsApp.keywords()
.withCondition('Status = ENABLED')
.withCondition(
'SearchImpressionShare < ' + (TARGET_IMPRESSION_SHARE - TOLERANCE))
.withCondition(‘.withCondition("AdGroupName = 'YOUR ADGROUP NAME HERE'")
.orderBy('SearchImpressionShare ASC')
.forDateRange('LAST_7_DAYS')
.get();
}
/**
* Gets an iterator of the keywords that need to have their CPC lowered.
* @return {Iterator} an iterator of the keywords
*/
function getKeywordsToLower() {
// Conditions to lower bid: Ctr greater than 1% AND
// average impression share better (greater) than target + tolerance
return AdsApp.keywords()
.withCondition('Ctr > 0.01')
.withCondition(
'SearchImpressionShare > ' + (TARGET_IMPRESSION_SHARE + TOLERANCE))
.withCondition('Status = ENABLED')
.withCondition(‘.withCondition("AdGroupName = 'YOUR ADGROUP NAME HERE'")
.orderBy('SearchImpressionShare DESC')
.forDateRange('LAST_7_DAYS')
.get();
}
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Hi Erica,
You will just need to get rid of the extra .withCondition(‘ that you included in the selectors.
Regards,
Anthony
Google Ads Scripts Team
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