Recommended four Super Practical search tools

Google, Baidu, although strong, in less than half a second can get tens of billions of related content of the Web connection, but after the identification and selection process is to spend a lot of time and energy. To get rid of this kind of trouble, you need some more direct and effective tools, and "reach the party" can also be more energetic.

　　wolframalpha--chart data to reach

(due to the call to Google database, this artifact has to take a ladder.) Classmate See: http://weibo.com)

Wolframalpha is a composite of graphing calculators, online libraries, and search engines. It is not like Google to give a fragmented mix of content, but directly to each frame information into a valid image, more intuitive rendering results.

For a chestnut, I want to know the distance from Zhuhai to Bangkok, so in the input box type "zhuhai Bangkok distance", a moment later can appear the following answer-the two line distance of 1675km, car dealership about 28 hours, and by plane only less than 2 hours, The relative position is also intuitively reflected on the map.

To understand the demographic changes in China, Wolframalpha will directly give a line chart:

Search for GeoEye-1 satellite, 3D map of the form of the operation speed, cycle, location and other information;

Even typing a mathematical problem directly, it will give detailed solutions and conclusions ...

Wolframalpha also has advanced knowledge and census data on physics, chemistry, nutrition, finance, climate and other subjects, and all information is validated by the system. In addition, each result page provides a link to the resource used to calculate the result, and provides a comment if there is a dispute.

　　Wayback machine--Internet "Time Shuttle"

Wayback Machine is an Internet backup tool that has been backed up over 435 billion pages since 1996. Enter any Web site URL, click "browser history", select the date, it will help you to present the image of the site in the past.

For example, January 1999 Sina home page long such ...

　　Topsy--twitter Dedicated search engine

You can not play Twitter, but you have to know the powerful Twitter analytics platform--topsy.

Social platforms are instantaneous, content is usually born at the moment of the event, and the discussion of the topic has changed over time, which requires the search tool to provide more timely, accurate, and faster results. But the traditional search engine only has the superiority in gathers the massive data, under the new demand, looks inferior.

Topsy has been able to capture all the full indexes on Twitter since 2006, as well as timely and accurate analysis of hot spots on Twitter. Search results for different topics and tags can also be based on the time of publication (one hour, one day, five days, selected time, etc.), the type of content (links, pictures, well-known user information, etc.) and different languages to filter, you can also directly view the original picture.

In the "social analytics" page input topic, also can take the time as the horizontal axis, displays the topic heat the change situation. Enter the same kind of other topics, you can compare the heat of the topic.

At the end of 2013, Apple bought Topsy Labs, the analyst, at a high price of $200 million. Data and analysis of the hard hands of the platform, in whom it is not a piece of fat?

　　Stack exchange--more focused question and answer community

Stack Exchange differs from Quora in the same question-and-answer community. Quora provides users with a platform for dialogue and communication, bringing together a variety of ideas and ideas for a particular problem, more subjective and more socially. Stack Exchange, which is more focused on the quality and professionalism of questions and answers, is a place where expertise is obtained.

The site contains a variety of topics, business, technology, life, culture, etc. claiming to be a site. The first set of program programming questions and Answers website Stack Overflow also became its number one member. The prestige reward mechanism is used in the question and answer, the user votes to make the correct answer ranking more forward, and does not accept the subjective answer.

So, if you can't find the answers you want in a lot of information, or if you can't judge the right and wrong of the data, ask in Stack Overflow, the huge user volume and answer selection mechanism will help you find a better solution.