![]() Google implemented the hummingbird update in August 2013 to handle longer search queries since more searches are conversational (e.g. Ī 2011 study found that the average length of queries had grown steadily over time and the average length of non-English language queries had increased more than English ones. In addition, studies have been conducted into linguistically-oriented attributes that can recognize if a web query is navigational, informational or transactional. This example of the Pareto principle (or 80–20 rule) allows search engines to employ optimization techniques such as index or database partitioning, caching and pre-fetching. ![]() > 100 million queries) are used most often, while the remaining terms are used less often individually. That is, a small portion of the terms observed in a large query log (e.g. In addition, research has shown that query term frequency distributions conform to the power law, or long tail distribution curves. This analysis is confirmed by a Bing search engine blog post which stated that about 30% of queries are navigational queries. This suggests that many users use repeat queries to revisit or re-find information. Ī 2005 study of Yahoo's query logs revealed that 33% of the queries from the same users were repeat queries and that in 87% of cases the user would click on the same result. Studies also show that, in addition to short queries (queries with few terms), there are predictable patterns of how users change their queries. The top four most frequently used terms were (empty search), and, of, and sex.Ī study of the same Excite query logs revealed that 19% of the queries contained a geographic term (e.g., place names, zip codes, geographic features, etc.).Less than 5% of users used advanced search features (e.g., boolean operators like AND, OR, and NOT).Close to half of the users examined only the first one or two pages of results (10 results per page).About half of the users entered a single query while a little less than a third of users entered three or more unique queries.The average length of a query was 2.4 terms.A 2001 study, which analyzed the queries from the Excite search engine, showed some interesting characteristics of web searches: Nevertheless, research studies started to appear in 1998. Most commercial web search engines do not disclose their search logs, so information about what users are searching for on the Web is difficult to come by. ![]() Ī list of search suggestions for a search query
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