Crawling Process - Intro to Computer ScienceYouTube↗  IA↗(long shot)
Education  5.5K views 1 likes 0 dislikes   23 Feb 2015
Udacity 651K subscribers United States YouTube↗


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So I'm going to describe that process, and I'm going to write it out
プロセスを記述します
in a, fairly precise way, but not as actual python code. Because it
かなり正確に書いていきますが 実際のPythonコードではありません
will end up being your job to finish the python code to
Pythonコードを完成させるのは 最終的に皆さんの仕事だからです
do this. But I want to describe it precisely enough so we can ask some questions about it. So we're going to start with some seed page and to crawl will just be that page. The list containing just
いくつか問題が解けるくらい十分に適切に記述します シードページから開始します クロールするのはシードページだけです
the seed page, and crawled will be empty. And we're going to keep going
リストはシードページを含んでいるだけです crawledは空です
as long as there are more pages to crawl. And for each step
クロールするページがある限り継続します
we're going to pick one of the pages, we'll add that page to crawled to keep track of the fact that we've
ページから1つ選びクロールした事実を把握するために そのページをcrawledに加えます
crawled it. Then we'll find all the link targets on
そしてこのページ上の ターゲットリンクすべてを見つけます
this page, and add those to tocrawl, and we'll keep going
それをtocrawlに追加します
as long as there are more pages in tocrawl. And
tocrawlにページがある限り継続します
then when we're done we'll return crawled. So that's the basic process that I've walked through. So for this quiz. I
終了したらcrawledを返します これが1つ1つ見ていく基本的なプロセスです
want to see that you understand the process that we're using
この小テストではWebのクロールに 使用するプロセスを理解できているか
to crawl the web, well enough to understand what will happen
サンプルのテストサイト上のシードページから開始し
if we do this starting from the seed page on the
クロールで起きることを理解できているか確認します
example test site. And you can try exploring that site yourself.
自分でサイトを探索してみてください
So the choices are, it will return a list of all
では選択肢です　シードページから開始し
the URL's that can be reached starting from the seed page.
たどり着いたすべてのURLのリストを返す
The second choice it will return a list of some of the URL's but not all of them that are reachable from
2つ目の選択肢はシードページから たどり着けるURLのいくつかのリストを返す
the seed page. And the third choice, it will never return.
3つ目の選択肢は返さないです
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