MatchingLBO.do - Revision history

Yimengtang at 21:45, 25 October 2016

2016-10-25T21:45:52Z

Yimengtang at 21:44, 25 October 2016

2016-10-25T21:44:41Z

Yimengtang at 21:43, 25 October 2016

2016-10-25T21:43:25Z

Yimengtang at 21:43, 25 October 2016

2016-10-25T21:43:06Z

Yimengtang at 22:01, 18 October 2016

2016-10-18T22:01:06Z

Yimengtang at 16:18, 18 October 2016

2016-10-18T16:18:19Z

Yimengtang at 16:17, 18 October 2016

2016-10-18T16:17:31Z

Yimengtang at 16:16, 18 October 2016

2016-10-18T16:16:39Z

Yimengtang at 16:14, 18 October 2016

2016-10-18T16:14:01Z

Yimengtang: Created page with "=matchingLBO.do= This do file aims to match companies with the closest propensity score based on industry, year, and number of patents from STATApredictLBO.dta. ==Oct 18== us..."

2016-10-18T16:12:12Z

Created page with "=matchingLBO.do= This do file aims to match companies with the closest propensity score based on industry, year, and number of patents from STATApredictLBO.dta. ==Oct 18== us..."

New page

=matchingLBO.do=
This do file aims to match companies with the closest propensity score based on industry, year, and number of patents from STATApredictLBO.dta.

==Oct 18==
use STATApredictLBO.dta, clear
/*rename industrygroup3 case_industrygroup3
rename year case_year*/
rename nopatents case_nopatents
rename logitpw case_logitpw
rename gvkey case_gvkey

/*industry, year, and no. of patents*/
joinby industrygroup3 year using STATApredictLBO.dta
gen a = nopatents*0.95
gen b = nopatents*1.05
gen delta=abs(logitpw-case_logitpw)
drop if case_nopatents > b | case_nopatents < a

// GENERATE SOME RANDOM NUMBERS TO RANDOMLY BREAK ANY TIES
// ON CLOSENESS OF MATCH OF MARKET VALUE
set seed 1020
gen double shuffle1 = runiform()
gen double shuffle2 = runiform()

by case_gvkey (delta shuffle1 shuffle2), sort: keep if _n == 1
drop delta shuffle1 shuffle2

( )Error op. sys. refuses to provide memory

← Older revision		Revision as of 21:45, 25 October 2016
Line 38:		Line 38:

	Error invalid syntax		Error invalid syntax
−	Possible reasons: 1. use of _n and x 2. if loop	+	Possible reasons: 1. use of _n and x 2. if loop

← Older revision		Revision as of 21:44, 25 October 2016
Line 37:		Line 37:
	}		}

−	Error invalid syntax	+	Error invalid syntax
		+	Possible reasons: 1. use of _n and x 2. if loop

@@ Line 36: / Line 36: @@
+   }
+   }
   Error invalid syntax

← Older revision		Revision as of 21:43, 25 October 2016
Line 24:		Line 24:

	Error op. sys. refuses to provide memory		Error op. sys. refuses to provide memory
		+
		+	==Attempt 2==
		+	foreach x of varlish matchfilter{
		+	if x==1{
		+	foreach matchfilter[_n]==0{
		+	if year[_n]==year[_x] & industrygroup3[_n]==industrygroup3[_x]{
		+	if nopatents[_n]/nopatents[_x]<1.1 \| nopatents[_n]/nopatents[_x]>1/1.1{
		+	gen delta=abs(logitpw[_n]-logitpw[_x]
		+	m=gvkey[_min(delta)]}
		+	}
		+	}
		+	}
		+	Error invalid syntax

@@ Line 16: / Line 16: @@
 // GENERATE SOME RANDOM NUMBERS TO RANDOMLY BREAK ANY TIES <br>
 // ON CLOSENESS OF MATCH OF MARKET VALUE  <br>
-set seed 1020 <br>
+set seed 0.5 <br>
 gen double shuffle1 = runiform()  <br>
 gen double shuffle2 = runiform()  <br>

← Older revision		Revision as of 16:18, 18 October 2016
Line 23:		Line 23:
	drop delta shuffle1 shuffle2 <br>		drop delta shuffle1 shuffle2 <br>

−	<Error op. sys. refuses to provide memory>	+	Error op. sys. refuses to provide memory

← Older revision		Revision as of 16:17, 18 October 2016
Line 23:		Line 23:
	drop delta shuffle1 shuffle2 <br>		drop delta shuffle1 shuffle2 <br>

−	~~( )~~Error op. sys. refuses to provide memory	+	<Error op. sys. refuses to provide memory>

@@ Line 2: / Line 2: @@
 ==Attempt 1==
-use STATApredictLBO.dta, clear \\
+use STATApredictLBO.dta, clear <br>
-rename nopatents case_nopatents \\
+rename nopatents case_nopatents <br>
-rename logitpw case_logitpw \\
+rename logitpw case_logitpw <br>
-rename gvkey case_gvkey  \\
+rename gvkey case_gvkey  <br>
-/*industry, year, and no. of patents*/
+/*industry, year, and no. of patents*/ <br>
-joinby industrygroup3 year using STATApredictLBO.dta
+joinby industrygroup3 year using STATApredictLBO.dta <br>
-gen a = nopatents*0.95
+gen a = nopatents*0.95 <br>
-gen b = nopatents*1.05
+gen b = nopatents*1.05  <br>
-gen delta=abs(logitpw-case_logitpw)
+gen delta=abs(logitpw-case_logitpw) <br>
-drop if case_nopatents > b | case_nopatents < a
+drop if case_nopatents > b | case_nopatents < a <br>
-// GENERATE SOME RANDOM NUMBERS TO RANDOMLY BREAK ANY TIES
+// GENERATE SOME RANDOM NUMBERS TO RANDOMLY BREAK ANY TIES <br>
-// ON CLOSENESS OF MATCH OF MARKET VALUE
+// ON CLOSENESS OF MATCH OF MARKET VALUE  <br>
-set seed 1020
+set seed 1020 <br>
-gen double shuffle1 = runiform()
+gen double shuffle1 = runiform()  <br>
-gen double shuffle2 = runiform()
+gen double shuffle2 = runiform()  <br>
-by case_gvkey (delta shuffle1 shuffle2), sort: keep if _n == 1
+by case_gvkey (delta shuffle1 shuffle2), sort: keep if _n == 1  <br>
-drop delta shuffle1 shuffle2
+drop delta shuffle1 shuffle2  <br>
 ( )Error op. sys. refuses to provide memory