in linkedin we trust??? (to source our candidates)
TRANSCRIPT
???
“In data analysis we trust”
- a case study
Mei Lu
Founder & CEO
Geekology.biz
In LinkedIn We Trust
Sourcing 7
Fall 2014 Shareback
@ Amazon
Account types
Breakdown
we
It looks like
A LOT
trust-worthy
Is
?
“Trust, but verify”
A simple
experiment
Step 1:
Find a Job Posting
Software Developer - Chicago
Requirements:
• 2-3 years of experience writing software
with Ruby
• 2-3 years of web development
experience with Ruby on Rails or Sinatra
• Direct experience with the development
and maintenance of large-scale, mission-
critical web applications
• Experience with TDD and BDD
Software Developer - Chicago
Requirements:
• 2-3 years of experience writing software
with Ruby
• 2-3 years of web development
experience with Ruby on Rails or Sinatra
• Direct experience with the development
and maintenance of large-scale, mission-
critical web applications
• Experience with TDD and BDD
Step 2:
- Use your basic (free)
LinkedIn account.
- Search.
LinkedIn Advanced Search:
Keywords: ruby rails sinatra tdd bdd
Location: "Greater Chicago Area“
Step 3:
- Find a search
engine.
- X-ray search
LinkedIn profiles.
site:www.linkedin.com "location * greater
chicago area" ruby rails sinatra tdd bdd
The moment of truth -
comparing results
19 = 19
The End ???
Numbers
alone
don’t tell
the
whole
story
searchWHY, BRAD DARLING, I FEEL
SOMETHING’S MISSING FROM THIS
PICTURE.
Time to do
some
detective
work
Name LinkedIn Google X-ray
Alex Kowalczuk x
Brandon Bailey x x
Calder Wishne x x
Dan Melnick x x
Darby Frey x
Eduardo Garibay x x
Ismail Kalimi x
Jake Sikora x
James Fraser x
Jason Perkins x
Jazmin Schroeder x
JD Kaplan x
Joshua Davey x x
Justin Joseph x
Keenan Turner x
Kevin Horst x xx
Marek Pyczkowski x
Nate Delage x x
Nickolay Schwarz x
Randy Burgess x
Ryan Kinderman x
Shawn Klein x x
Shinji Kuwayama x
Stephen Wooten x
Ted Price x xx
Zach Briggs x
Zachary Rivest x x
Name LinkedIn Google X-ray
Alex Kowalczuk x
Brandon Bailey x x
Calder Wishne x x
Dan Melnick x x
Darby Frey x
Eduardo Garibay x x
Ismail Kalimi x
Jake Sikora x
James Fraser x
Jason Perkins x
Jazmin Schroeder x
JD Kaplan x
Joshua Davey x x
Justin Joseph x
Keenan Turner x
Kevin Horst x xx
Marek Pyczkowski x
Nate Delage x x
Nickolay Schwarz x
Randy Burgess x
Ryan Kinderman x
Shawn Klein x x
Shinji Kuwayama x
Stephen Wooten x
Ted Price x xx
Zach Briggs x
Zachary Rivest x x
X-ray
Exclusive
Exclusive
Both
10
8
9
19 17Total 27
Why are there profiles
only in Google X-ray,
but not in LinkedIn?
Question:
1.
Google shows us both
“TDD” and
“Test Driven Development”
2.
Google shows us
some profiles with
one keyword (bdd, Sinatra)
missing
Name LinkedIn Google X-ray
Alex Kowalczuk (missing bdd)
Brandon Bailey x x
Calder Wishne x x
Dan Melnick x x
Darby Frey x
Eduardo Garibay x x
Ismail Kalimi x
Jake Sikora (missing bdd) not really
James Fraser x
Jason Perkins x
Jazmin Schroeder x
JD Kaplan x
Joshua Davey x x
Justin Joseph x
Keenan Turner x
Kevin Horst x xx
Marek Pyczkowski x
Nate Delage x x
Nickolay Schwarz x
Randy Burgess (missing bdd)
Ryan Kinderman (missing Sinatra)
Shawn Klein x x
Shinji Kuwayama x
Stephen Wooten x
Ted Price x xx
Zach Briggs x
Zachary Rivest x x
X-ray
Exclusive
Exclusive
Both
10
8 4
9
Total 19 17 13
Should it count???
Cleaning
Up
GoogleX-ray
Results
23
Still…
There are 4 results
only in Google X-ray,
but not in LinkedIn
What if we make our
Boolean string better?
TDD ->
(TDD OR “test driven development”)
BDD ->
(BDD OR “behavior driven development”)
LinkedIn Advanced Search:
Keywords: ruby rails sinatra (tdd OR “test driven development”) (bdd OR “behavior driven
development”)
Location: "Greater Chicago Area“
Name LinkedIn w/ Basic Boolean LinkedIn w/ Better Boolean
Andrew Larson x
Brandon Bailey x x
Calder Wishne x x
Dan Melnick x x
Darby Frey x
Eduardo Garibay x x
Eugene Filimonov x
Ismail Kalimi x x
Jake Sikora x
James Fraser x x
Jason Perkins x x
Jazmin Schroeder x
JD Kaplan x x
Joshua Davey x x
Justin Joseph x x
Justin Park x
Keenan Turner x x
Kevin Horst x x
Marek Pyczkowski x x
Milan Grubnić x
Nate Delage x x
Nickolay Schwarz x x
Shawn Klein x x
Shinji Kuwayama x
Stephen Wooten x
Stuart Pearlman x
Ted Price x x
Xander Glassman x
Zach Briggs x x
Zachary Rivest x x
Both
Better
Boolean 11
19
All gain;
no loss.
Yay!
How about Google X-ray
with the better Boolean
string?
site:linkedin.com "location * greater
chicago area" ruby rails sinatra
(tdd OR "test driven development")
(bdd OR "behavior driven development")
Name Google w/ Basic Boolean Google w/ Better Boolean
Alex Kowalczuk missing bdd
Andrew Larson x
Brandon Bailey x x
Calder Wishne x x
Dan Melnick x
Darby Frey x x
Eduardo Garibay x x
Eugene Filimonov x
Jake Sikora missing bdd (not really) x
Jazmin Schroeder x x
Joshua Davey x
Justin Park x
Kevin Horst xx xx
Nate Delage x x
Randy Burgess missing bdd
Ryan Kinderman missing bdd
Shawn Klein x x
Shinji Kuwayama x x
Stephen Wooten x x
Ted Price xx xx
Zachary Rivest x x
17 17Total
Loss w/
Better
Boolean
Gain w/
Better
Boolean4
4
Same
numbers of
results.
But cleaner.
Final SHOWDOWNBest of
LinkedIn Advanced Search (Free Account)and
Google X-ray Search of LinkedIn
Name LinkedIn (30) Google (17)
Andrew Larson x x
Brandon Bailey x x
Calder Wishne x x
Dan Melnick x
Darby Frey x x
Eduardo Garibay x x
Eugene Filimonov x x
Ismail Kalimi x
Jake Sikora x x
James Fraser x
Jason Perkins x
Jazmin Schroeder x x
JD Kaplan x
Joshua Davey x x
Justin Joseph x
Justin Park x x
Keenan Turner x
Kevin Horst x xx
Marek Pyczkowski x
Milan Grubnić x
Nate Delage x x
Nickolay Schwarz x
Shawn Klein x x
Shinji Kuwayama x x
Stephen Wooten x x
Stuart Pearlman x
Ted Price x xx
Xander Glassman x
Zach Briggs x
Zachary Rivest x x
X-ray
Exclusive
Exclusive
Both
13
0
17
What have we learned?1.LinkedIn searches literally while Google
searches fluidly
2.Google tries to help us by including
synonyms behind the scene
3.When we compose thorough and
comprehensive Boolean strings, LinkedIn
outperforms Google X-ray (at least in this
study)
Case closed?
Not so fast…
The next set of questions
already surfaced
Would a paid LinkedIn account give
us more (and exhaustive) results?
Why did Google fail to find some
profiles?
How much can we rely on Google
to improve our Boolean search
strings?
Questions?
Special thanks to Amybeth Quinn
Mei Lu
Geekology.biz
@g33kology