slide1
Download
Skip this Video
Download Presentation
Text Mining: Main Steps

Loading in 2 Seconds...

play fullscreen
1 / 5

Text Mining: Main Steps - PowerPoint PPT Presentation


  • 95 Views
  • Uploaded on

Text Mining: Main Steps. Some analysis can be done without a document-term matrix. Obtain unstructured text. Analyze & DataViz. Convert to Structured Data. External Social Media Twitter, Web, Blogs, Patents, Reviews. Internal Records, Emails, Surveys Notebooks. Document

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Text Mining: Main Steps' - starr


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Text Mining: Main Steps

Some analysis can be done without a document-term matrix

Obtain

unstructured text

Analyze

&

DataViz

Convert to Structured Data

External

Social Media

Twitter,

Web,

Blogs,

Patents,

Reviews

Internal

Records,

Emails,

Surveys

Notebooks

Document

Term

Matrix

Or

Term-Document

Matrix

Frequency,

Associations,

Sentiment,

Categorize

slide2

Unstructured  Structured

“Document” can refer to one word, a phrase, a title, tweet, email, paragraph, page, etc.

Term-Document Matrix

slide3

Unstructured  Analytics

Various online tools exist for some text-based analysis and dataviz

Word Frequency

Sentiment Analysis

slide4

Word Frequency

http://www.textfixer.com/tools/online-word-counter.php

Similar Results

slide5

http://www.wordle.net/

http://www.wordle.net/advanced

Alternatively, can obtain word frequency and enter them into Advanced section.

Entering all the cold weather tweets not surprisingly has these outweighing everything

Online Word Counter data pasted into Excel. @concatenate(A1,”:”,B1) used.

  • Limit number of words by using “Layout” and “Maximum Words”
  • Remove words, by right-clicking on them and using the resulting popup menu. This will re-layout the Wordle without the selected word.
ad