是否可以使用谷歌知識圖形API提出自由形式的問題？

Question

有沒有可能問一個問題，比如「艾菲爾鐵塔有多高？」使用谷歌知識圖api？如果不是什麼是正確的API使用？

當我試試這個：

https://kgsearch.googleapis.com/v1/entities:search?query=how+tall+is+eiffel+tower&key=my_key&limit=1&indent=True

我得到空的結果。

Answer 1

有人可能會問，但有一半的時間會「回答」與你所要求的不同的東西，其餘的時間會給你一個空的結果。

即使明確的搜索通常會返回空的或意外的結果。例如，當我搜索當前的美國總統時，它返回關於奧巴馬的結果，並且當我搜索美國人口時，它並沒有真正說出應該說什麼（31890（2014））：

=> #<HTTParty::Response:0x7ffc5857b938 parsed_response={"@context"=>{"@vocab"=>"http://schema.org/", "goog"=>"http://schema.googleapis.com/", "EntitySearchResult"=>"goog:EntitySearchResult", "detailedDescription"=>"goog:detailedDescription", "resultScore"=>"goog:resultScore", "kg"=>"http://g.co/kg"}, "@type"=>"ItemList", "itemListElement"=>[{"@type"=>"EntitySearchResult", "result"=>{"@id"=>"kg:/m/09c7w0", "name"=>"United States", "@type"=>["Country", "Thing", "Place", "AdministrativeArea"], "description"=>"Country", "image"=>{"contentUrl"=>"http://t1.gstatic.com/images?q=tbn:ANd9GcQKp8mjZhEK0hZroCA4srP9VA9eD8-0PcCsKSU4olhQlh6dMlxc", "url"=>"https://commons.wikimedia.org/wiki/File:USA_Flag_Map.svg", "license"=>"http://creativecommons.org/licenses/by-sa/2.5"}, "detailedDescription"=>{"articleBody"=>"The United States of America, commonly referred to as the United States or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions. ", "url"=>"https://en.wikipedia.org/wiki/United_States", "license"=>"https://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License"}, "url"=>"http://www.usa.gov/"}, "resultScore"=>246.96698}, {"@type"=>"EntitySearchResult", "result"=>{"@id"=>"kg:/g/1q5jrvck9", "name"=>"Population: Us", "@type"=>["Thing"], "description"=>"Song by Frank Portman"}, "resultScore"=>20.875225}]}, @response=#<Net::HTTPOK 200 OK readbody=true>, @headers={"content-type"=>["application/json; charset=UTF-8"], "vary"=>["Origin", "X-Origin", "Referer"], "date"=>["Fri, 03 Feb 2017 20:33:38 GMT"], "server"=>["ESF"], "cache-control"=>["private"], "x-xss-protection"=>["1; mode=block"], "x-frame-options"=>["SAMEORIGIN"], "x-content-type-options"=>["nosniff"], "alt-svc"=>["quic=\":443\"; ma=2592000; v=\"35,34\""], "connection"=>["close"], "transfer-encoding"=>["chunked"]}> 

無論我如何使用查詢或使用什麼關鍵字，它實際上都是無用的。我也嘗試指定我想要的結果&types=。它很少會返回預期的結果;例如，當我搜索美國的：

=> #<HTTParty::Response:0x7ffc58619f20 parsed_response={"@context"=>{"@vocab"=>"http://schema.org/", "goog"=>"http://schema.googleapis.com/", "EntitySearchResult"=>"goog:EntitySearchResult", "detailedDescription"=>"goog:detailedDescription", "resultScore"=>"goog:resultScore", "kg"=>"http://g.co/kg"}, "@type"=>"ItemList", "itemListElement"=>[{"@type"=>"EntitySearchResult", "result"=>{"@id"=>"kg:/m/09c7w0", "name"=>"United States", "@type"=>["Country", "Thing", "Place", "AdministrativeArea"], "description"=>"Country", "image"=>{"contentUrl"=>"http://t1.gstatic.com/images?q=tbn:ANd9GcQKp8mjZhEK0hZroCA4srP9VA9eD8-0PcCsKSU4olhQlh6dMlxc", "url"=>"https://commons.wikimedia.org/wiki/File:USA_Flag_Map.svg", "license"=>"http://creativecommons.org/licenses/by-sa/2.5"}, "detailedDescription"=>{"articleBody"=>"The United States of America, commonly referred to as the United States or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions. ", "url"=>"https://en.wikipedia.org/wiki/United_States", "license"=>"https://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License"}, "url"=>"http://www.usa.gov/"}, "resultScore"=>4238.782227}]}, @response=#<Net::HTTPOK 200 OK readbody=true>, @headers={"content-type"=>["application/json; charset=UTF-8"], "vary"=>["Origin", "X-Origin", "Referer"], "date"=>["Fri, 03 Feb 2017 20:29:07 GMT"], "server"=>["ESF"], "cache-control"=>["private"], "x-xss-protection"=>["1; mode=block"], "x-frame-options"=>["SAMEORIGIN"], "x-content-type-options"=>["nosniff"], "alt-svc"=>["quic=\":443\"; ma=2592000; v=\"35,34\""], "connection"=>["close"], "transfer-encoding"=>["chunked"]}> 

我建議你不要用它浪費你的時間，我已經做到了。另請注意，Custom Search API不包含知識圖的結果，並且「非自定義」搜索API長期爲deprecated。