Text Mining Slides

Report
Text Mining
Supplemental Resources on Class Website
Big Data
Concept Map
Text
Mining
Design:
Accuracy
Relative
Cell
References
Data
Mining
Implementation
Import
Search, Left,
Right, Mid,
Len, &
Objectives
▪Define Big Data, Text Mining and
Data Mining
▪Demonstrate Excel features that
support text mining.
Facebook Users
▪1.28 billion users worldwide
▪802 million users login daily (up 21%)
▪67% of Internet users are on FB
▪50% of 18-24 year olds login when they
wake up
▪45-54 year old age group has grown
46%
Facebook Content
▪4.5 billion likes daily (up 67%)
▪30 million photos uploaded daily
▪1 in 5 page views in US
▪36% users post brand-related content
on their walls
King of Social Media
▪FB accounts for 66% of social media
sharing on iPhones
▪Users with income over $75,000
Facebook
Twitter
Pinterest
73%
17%
13%
Facebook & e-commerce
▪10 million registered small
businesses
▪Drives 26% of referral traffic to ecommerce sites
▪20% of shoppers prefer buying thru
FB vs. e-commerce website
▪58% of businesses see a drop in
marketing costs when moving to FB
Big Data
▪Data sets too large to process with
traditional database technology
https://www.ted.com/talks/
kenneth_cukier_big_data_is_
better_data
Data Mining Tools
▪ software that searches through data
▪ uses complex statistical calculations
▪ outputs
▪ Trends
▪ Patterns
▪ Correlations
▪ Exceptions
Nestle
▪Nestle processes Social Media
http://uk.reuters.com/article/video/idUKBRE89P07Q20
121026?videoId=238680321
Import
▪Access data not formatted as an
Excel document
▪File type = txt or csv
Import – Step 1
▪ File, Open, File type = All files
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html
Import – Step 2
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html
Import – Step 3
▪ Save As File type = Excel Worksheet
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html
Text Mining
▪ Search
▪ SEARCH
▪ Parse
▪ LEFT, MID, RIGHT, LEN
▪ Concatenate
▪&
SEARCH Function
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html
LEFT Function
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html
LEN or Length Function
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html
RIGHT Function
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html
MID Function
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html
Concatenate
▪& is the concatenate symbol
▪Quotes are required around constant
strings of text
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html
Relative Cell Addressing
▪Relative is the default
▪When you copy a relative cell
reference the reference will change
depending on the direction and
magnitude of the copy.
Copy Formula with Relative Cell
Addresses
Paste Special - Values
MAC: Edit Menu, Paste Special
http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

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