Pandas Profiling Report

Dataset statistics

Number of variables	13
Number of observations	620540
Missing cells	38006
Missing cells (%)	0.5%
Duplicate rows	0
Duplicate rows (%)	0.0%
Total size in memory	61.5 MiB
Average record size in memory	104.0 B

Variable types

Numeric	11
Categorical	2

Alerts

`categories` has a high cardinality: 67004 distinct values	High cardinality
`citable_docs_3years` is highly overall correlated with `h_index` and 4 other fields	High correlation
`h_index` is highly overall correlated with `citable_docs_3years` and 7 other fields	High correlation
`journal_rating` is highly overall correlated with `h_index` and 4 other fields	High correlation
`rank` is highly overall correlated with `h_index` and 4 other fields	High correlation
`ref_per_doc` is highly overall correlated with `h_index` and 2 other fields	High correlation
`total_cites_3years` is highly overall correlated with `citable_docs_3years` and 6 other fields	High correlation
`total_docs` is highly overall correlated with `citable_docs_3years` and 4 other fields	High correlation
`total_docs_3years` is highly overall correlated with `citable_docs_3years` and 4 other fields	High correlation
`total_refs` is highly overall correlated with `citable_docs_3years` and 7 other fields	High correlation
`sjr_best_quartile` is highly overall correlated with `rank`	High correlation
`journal_rating` has 38006 (6.1%) missing values	Missing
`citable_docs_3years` is highly skewed (γ1 = 47.17653641)	Skewed
`total_cites_3years` is highly skewed (γ1 = 33.27400829)	Skewed
`total_docs` is highly skewed (γ1 = 44.54113692)	Skewed
`total_docs_3years` is highly skewed (γ1 = 45.56996407)	Skewed
`total_refs` is highly skewed (γ1 = 45.60770981)	Skewed
`citable_docs_3years` has 29012 (4.7%) zeros	Zeros
`h_index` has 9095 (1.5%) zeros	Zeros
`ref_per_doc` has 153751 (24.8%) zeros	Zeros
`total_cites_3years` has 65410 (10.5%) zeros	Zeros
`total_docs` has 134190 (21.6%) zeros	Zeros
`total_docs_3years` has 27877 (4.5%) zeros	Zeros
`total_refs` has 153728 (24.8%) zeros	Zeros

Reproduction

Analysis started	2023-05-04 15:11:05.642523
Analysis finished	2023-05-04 15:11:45.790266
Duration	40.15 seconds
Software version	ydata-profiling vv4.1.2
Download configuration	config.json

journal__sourceid
Real number (ℝ)

Distinct	70227
Distinct (%)	11.3%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	8.1230085 × 10⁹

Minimum	12000
Maximum	2.110106 × 10¹⁰
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	12000
5-th percentile	14065
Q1	22618
median	144819
Q3	1.9900192 × 10¹⁰
95-th percentile	2.1100837 × 10¹⁰
Maximum	2.110106 × 10¹⁰
Range	2.1101048 × 10¹⁰
Interquartile range (IQR)	1.9900169 × 10¹⁰

Descriptive statistics

Standard deviation	9.4602373 × 10⁹
Coefficient of variation (CV)	1.1646224
Kurtosis	-1.6611209
Mean	8.1230085 × 10⁹
Median Absolute Deviation (MAD)	132149
Skewness	0.46384165
Sum	5.0406517 × 10¹⁵
Variance	8.949609 × 10¹⁹
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
16801	23	< 0.1%
5700168957	23	< 0.1%
30588	23	< 0.1%
1.970018816 × 10¹⁰	23	< 0.1%
26333	23	< 0.1%
16671	23	< 0.1%
29670	23	< 0.1%
13473	23	< 0.1%
25571	23	< 0.1%
23717	23	< 0.1%
Other values (70217)	620310	> 99.9%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
12000	13	< 0.1%
12001	23	< 0.1%
12002	23	< 0.1%
12004	22	< 0.1%
12005	23	< 0.1%
12006	23	< 0.1%
12007	4	< 0.1%
12008	6	< 0.1%
12009	20	< 0.1%
12010	23	< 0.1%

Value	Count	Frequency (%)
2.110105979 × 10¹⁰	3	< 0.1%
2.110105978 × 10¹⁰	16	< 0.1%
2.110105978 × 10¹⁰	2	< 0.1%
2.110105949 × 10¹⁰	1	< 0.1%
2.11010593 × 10¹⁰	1	< 0.1%
2.11010593 × 10¹⁰	8	< 0.1%
2.110105901 × 10¹⁰	3	< 0.1%
2.110105901 × 10¹⁰	1	< 0.1%
2.110105897 × 10¹⁰	1	< 0.1%
2.110105896 × 10¹⁰	6	< 0.1%

year
Real number (ℝ)

Distinct	23
Distinct (%)	< 0.1%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	2011.3857

Minimum	1999
Maximum	2021
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	1999
5-th percentile	2000
Q1	2007
median	2012
Q3	2017
95-th percentile	2020
Maximum	2021
Range	22
Interquartile range (IQR)	10

Descriptive statistics

Standard deviation	6.2753051
Coefficient of variation (CV)	0.0031198914
Kurtosis	-1.0005721
Mean	2011.3857
Median Absolute Deviation (MAD)	5
Skewness	-0.28788358
Sum	1.2481453 × 10⁹
Variance	39.379454
Monotonicity	Increasing

Histogram with fixed size bins (bins=23)

Value	Count	Frequency (%)
2017	34766	5.6%
2016	34279	5.5%
2020	34169	5.5%
2018	33939	5.5%
2015	33651	5.4%
2014	32937	5.3%
2013	32470	5.2%
2012	31864	5.1%
2019	31861	5.1%
2011	30913	5.0%
Other values (13)	289691	46.7%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
1999	16987	2.7%
2000	17298	2.8%
2001	17972	2.9%
2002	19114	3.1%
2003	19638	3.2%
2004	20211	3.3%
2005	21092	3.4%
2006	22662	3.7%
2007	24195	3.9%
2008	26089	4.2%

Value	Count	Frequency (%)
2021	27339	4.4%
2020	34169	5.5%
2019	31861	5.1%
2018	33939	5.5%
2017	34766	5.6%
2016	34279	5.5%
2015	33651	5.4%
2014	32937	5.3%
2013	32470	5.2%
2012	31864	5.1%

categories
Categorical

Distinct	67004
Distinct (%)	10.8%
Missing	0
Missing (%)	0.0%
Memory size	4.7 MiB

Medicine (miscellaneous) (Q4)	12113
Engineering (miscellaneous)	7676
Medicine (miscellaneous) (Q3)	7648
Software	3593
Electrical and Electronic Engineering	3067
Other values (66999)	586443

Length

Max length	509
Median length	301
Mean length	65.562819
Min length	3

Characters and Unicode

Total characters	40684352
Distinct characters	57
Distinct categories	8 ?
Distinct scripts	2 ?
Distinct blocks	1 ?

The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique	25914 ?
Unique (%)	4.2%

Sample

1st row	Biochemistry (Q1)
2nd row	Biochemistry, Genetics and Molecular Biology (miscellaneous) (Q1)
3rd row	Immunology (Q1); Immunology and Allergy (Q1)
4th row	Cell Biology (Q1); Developmental Biology (Q1)
5th row	Neuroscience (miscellaneous) (Q1)

Common Values

Value	Count	Frequency (%)
Medicine (miscellaneous) (Q4)	12113	2.0%
Engineering (miscellaneous)	7676	1.2%
Medicine (miscellaneous) (Q3)	7648	1.2%
Software	3593	0.6%
Electrical and Electronic Engineering	3067	0.5%
Computer Networks and Communications	2660	0.4%
Medicine (miscellaneous) (Q2)	2475	0.4%
Medicine (miscellaneous)	1459	0.2%
Literature and Literary Theory (Q4)	1458	0.2%
Electrical and Electronic Engineering; Hardware and Architecture	1450	0.2%
Other values (66994)	576941	93.0%

Length

Histogram of lengths of the category

Value	Count	Frequency (%)
and	570125	11.8%
q1	267430	5.5%
q2	266021	5.5%
q3	264153	5.5%
q4	262127	5.4%
miscellaneous	217620	4.5%
science	153450	3.2%
engineering	147044	3.0%
medicine	108360	2.2%
computer	73497	1.5%
Other values (378)	2510647	51.9%

Most occurring characters

Value	Count	Frequency (%)
	4220950	10.4%
e	3116433	7.7%
n	2931015	7.2%
i	2807687	6.9%
a	2453829	6.0%
o	2189272	5.4%
c	1938240	4.8%
l	1836891	4.5%
t	1710166	4.2%
s	1553537	3.8%
Other values (47)	15926332	39.1%

Most occurring categories

Value	Count	Frequency (%)
Lowercase Letter	27871190	68.5%
Space Separator	4220950	10.4%
Uppercase Letter	4004971	9.8%
Open Punctuation	1309111	3.2%
Close Punctuation	1309111	3.2%
Decimal Number	1059731	2.6%
Other Punctuation	890562	2.2%
Dash Punctuation	18726	< 0.1%

Most frequent character per category

Lowercase Letter

Value	Count	Frequency (%)
e	3116433	11.2%
n	2931015	10.5%
i	2807687	10.1%
a	2453829	8.8%
o	2189272	7.9%
c	1938240	7.0%
l	1836891	6.6%
t	1710166	6.1%
s	1553537	5.6%
r	1466024	5.3%
Other values (15)	5868096	21.1%

Uppercase Letter

Value	Count	Frequency (%)
Q	1066611	26.6%
S	407734	10.2%
E	394214	9.8%
M	365109	9.1%
C	304612	7.6%
P	293668	7.3%
A	203207	5.1%
H	125352	3.1%
I	117754	2.9%
B	102816	2.6%
Other values (12)	623894	15.6%

Decimal Number

Value	Count	Frequency (%)
1	267430	25.2%
2	266021	25.1%
3	264153	24.9%
4	262127	24.7%

Other Punctuation

Value	Count	Frequency (%)
;	748349	84.0%
,	142213	16.0%

Space Separator

Value	Count	Frequency (%)
	4220950	100.0%

Open Punctuation

Value	Count	Frequency (%)
(	1309111	100.0%

Close Punctuation

Value	Count	Frequency (%)
)	1309111	100.0%

Dash Punctuation

Value	Count	Frequency (%)
-	18726	100.0%

Most occurring scripts

Value	Count	Frequency (%)
Latin	31876161	78.3%
Common	8808191	21.7%

Most frequent character per script

Latin

Value	Count	Frequency (%)
e	3116433	9.8%
n	2931015	9.2%
i	2807687	8.8%
a	2453829	7.7%
o	2189272	6.9%
c	1938240	6.1%
l	1836891	5.8%
t	1710166	5.4%
s	1553537	4.9%
r	1466024	4.6%
Other values (37)	9873067	31.0%

Common

Value	Count	Frequency (%)
	4220950	47.9%
(	1309111	14.9%
)	1309111	14.9%
;	748349	8.5%
1	267430	3.0%
2	266021	3.0%
3	264153	3.0%
4	262127	3.0%
,	142213	1.6%
-	18726	0.2%

Most occurring blocks

Value	Count	Frequency (%)
ASCII	40684352	100.0%

Most frequent character per block

ASCII

Value	Count	Frequency (%)
	4220950	10.4%
e	3116433	7.7%
n	2931015	7.2%
i	2807687	6.9%
a	2453829	6.0%
o	2189272	5.4%
c	1938240	4.8%
l	1836891	4.5%
t	1710166	4.2%
s	1553537	3.8%
Other values (47)	15926332	39.1%

citable_docs_3years
Real number (ℝ)

HIGH CORRELATION SKEWED ZEROS

Distinct	5239
Distinct (%)	0.8%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	215.02452

Minimum	0
Maximum	94370
Zeros	29012
Zeros (%)	4.7%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	0
5-th percentile	1
Q1	38
median	86
Q3	197
95-th percentile	742
Maximum	94370
Range	94370
Interquartile range (IQR)	159

Descriptive statistics

Standard deviation	812.08001
Coefficient of variation (CV)	3.7766856
Kurtosis	3550.1556
Mean	215.02452
Median Absolute Deviation (MAD)	61
Skewness	47.176536
Sum	1.3343132 × 10⁸
Variance	659473.94
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
0	29012	4.7%
1	6135	1.0%
48	3649	0.6%
60	3639	0.6%
56	3636	0.6%
50	3635	0.6%
45	3589	0.6%
24	3572	0.6%
40	3545	0.6%
47	3542	0.6%
Other values (5229)	556586	89.7%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	29012	4.7%
1	6135	1.0%
2	3043	0.5%
3	2688	0.4%
4	2700	0.4%
5	2829	0.5%
6	3032	0.5%
7	3031	0.5%
8	3307	0.5%
9	3207	0.5%

Value	Count	Frequency (%)
94370	1	< 0.1%
93640	1	< 0.1%
88176	1	< 0.1%
83873	1	< 0.1%
82993	1	< 0.1%
78745	1	< 0.1%
72423	1	< 0.1%
69798	1	< 0.1%
68541	1	< 0.1%
68277	1	< 0.1%

h_index
Real number (ℝ)

HIGH CORRELATION ZEROS

Distinct	404
Distinct (%)	0.1%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	39.225832

Minimum	0
Maximum	1276
Zeros	9095
Zeros (%)	1.5%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	0
5-th percentile	2
Q1	8
median	20
Q3	50
95-th percentile	137
Maximum	1276
Range	1276
Interquartile range (IQR)	42

Descriptive statistics

Standard deviation	53.600804
Coefficient of variation (CV)	1.366467
Kurtosis	44.797354
Mean	39.225832
Median Absolute Deviation (MAD)	15
Skewness	4.4230824
Sum	24341198
Variance	2873.0462
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
5	22152	3.6%
4	21720	3.5%
6	20510	3.3%
3	20478	3.3%
7	19338	3.1%
8	18376	3.0%
2	18132	2.9%
9	17803	2.9%
10	16147	2.6%
11	15021	2.4%
Other values (394)	430863	69.4%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	9095	1.5%
1	13958	2.2%
2	18132	2.9%
3	20478	3.3%
4	21720	3.5%
5	22152	3.6%
6	20510	3.3%
7	19338	3.1%
8	18376	3.0%
9	17803	2.9%

Value	Count	Frequency (%)
1276	23	< 0.1%
1229	23	< 0.1%
1079	23	< 0.1%
814	23	< 0.1%
807	23	< 0.1%
805	23	< 0.1%
745	23	< 0.1%
709	23	< 0.1%
647	23	< 0.1%
644	23	< 0.1%

journal_rating
Real number (ℝ)

HIGH CORRELATION MISSING

Distinct	8524
Distinct (%)	1.5%
Missing	38006
Missing (%)	6.1%
Infinite	0
Infinite (%)	0.0%
Mean	0.55719131

Minimum	0.1
Maximum	88.192
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	0.1
5-th percentile	0.101
Q1	0.123
median	0.231
Q3	0.594
95-th percentile	1.834
Maximum	88.192
Range	88.092
Interquartile range (IQR)	0.471

Descriptive statistics

Standard deviation	1.1592403
Coefficient of variation (CV)	2.0805067
Kurtosis	350.0633
Mean	0.55719131
Median Absolute Deviation (MAD)	0.127
Skewness	13.019474
Sum	324582.88
Variance	1.343838
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
0.1	26231	4.2%
0.101	25271	4.1%
0.102	11394	1.8%
0.103	7718	1.2%
0.111	6423	1.0%
0.104	5988	1.0%
0.105	5281	0.9%
0.123	4622	0.7%
0.107	4592	0.7%
0.11	4469	0.7%
Other values (8514)	480545	77.4%
(Missing)	38006	6.1%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0.1	26231	4.2%
0.101	25271	4.1%
0.102	11394	1.8%
0.103	7718	1.2%
0.104	5988	1.0%
0.105	5281	0.9%
0.106	4210	0.7%
0.107	4592	0.7%
0.108	3915	0.6%
0.109	3114	0.5%

Value	Count	Frequency (%)
88.192	1	< 0.1%
72.576	1	< 0.1%
62.937	1	< 0.1%
61.786	1	< 0.1%
56.204	1	< 0.1%
50.518	1	< 0.1%
49.268	1	< 0.1%
48.894	1	< 0.1%
47.751	1	< 0.1%
47.288	1	< 0.1%

rank
Real number (ℝ)

Distinct	34766
Distinct (%)	5.6%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	14209.023

Minimum	1
Maximum	34766
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	1
5-th percentile	1349.95
Q1	6745.75
median	13490.5
Q3	20835
95-th percentile	29983
Maximum	34766
Range	34765
Interquartile range (IQR)	14089.25

Descriptive statistics

Standard deviation	8870.0511
Coefficient of variation (CV)	0.62425481
Kurtosis	-0.90177875
Mean	14209.023
Median Absolute Deviation (MAD)	6999.5
Skewness	0.29967013
Sum	8.8172673 × 10⁹
Variance	78677807
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
1	23	< 0.1%
11333	23	< 0.1%
11319	23	< 0.1%
11320	23	< 0.1%
11321	23	< 0.1%
11322	23	< 0.1%
11323	23	< 0.1%
11324	23	< 0.1%
11325	23	< 0.1%
11326	23	< 0.1%
Other values (34756)	620310	> 99.9%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
1	23	< 0.1%
2	23	< 0.1%
3	23	< 0.1%
4	23	< 0.1%
5	23	< 0.1%
6	23	< 0.1%
7	23	< 0.1%
8	23	< 0.1%
9	23	< 0.1%
10	23	< 0.1%

Value	Count	Frequency (%)
34766	1	< 0.1%
34765	1	< 0.1%
34764	1	< 0.1%
34763	1	< 0.1%
34762	1	< 0.1%
34761	1	< 0.1%
34760	1	< 0.1%
34759	1	< 0.1%
34758	1	< 0.1%
34757	1	< 0.1%

ref_per_doc
Real number (ℝ)

HIGH CORRELATION ZEROS

Distinct	16545
Distinct (%)	2.7%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	27.429817

Minimum	0
Maximum	4841
Zeros	153751
Zeros (%)	24.8%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	0
5-th percentile	0
Q1	0.16
median	23.9
Q3	39.15
95-th percentile	69.13
Maximum	4841
Range	4841
Interquartile range (IQR)	38.99

Descriptive statistics

Standard deviation	35.475855
Coefficient of variation (CV)	1.2933318
Kurtosis	1376.9439
Mean	27.429817
Median Absolute Deviation (MAD)	17.67
Skewness	17.911385
Sum	17021299
Variance	1258.5363
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
0	153751	24.8%
30	432	0.1%
28	432	0.1%
29	425	0.1%
26	418	0.1%
23	410	0.1%
25	403	0.1%
34	395	0.1%
27	395	0.1%
24	395	0.1%
Other values (16535)	463084	74.6%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	153751	24.8%
0.01	97	< 0.1%
0.02	117	< 0.1%
0.03	114	< 0.1%
0.04	97	< 0.1%
0.05	103	< 0.1%
0.06	79	< 0.1%
0.07	113	< 0.1%
0.08	87	< 0.1%
0.09	86	< 0.1%

Value	Count	Frequency (%)
4841	1	< 0.1%
4500	1	< 0.1%
3261	1	< 0.1%
2753	1	< 0.1%
2633	1	< 0.1%
2310	1	< 0.1%
1992	1	< 0.1%
1927	1	< 0.1%
1751	1	< 0.1%
1719	1	< 0.1%

sjr_best_quartile
Categorical

Distinct	5
Distinct (%)	< 0.1%
Missing	0
Missing (%)	0.0%
Memory size	4.7 MiB

Q1	139258
-	138621
Q2	117491
Q3	114504
Q4	110666

Length

Max length	2
Median length	2
Mean length	1.7766123
Min length	1

Characters and Unicode

Total characters	1102459
Distinct characters	6
Distinct categories	3 ?
Distinct scripts	2 ?
Distinct blocks	1 ?

The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique	0 ?
Unique (%)	0.0%

Sample

1st row	Q1
2nd row	Q1
3rd row	Q1
4th row	Q1
5th row	Q1

Common Values

Value	Count	Frequency (%)
Q1	139258	22.4%
-	138621	22.3%
Q2	117491	18.9%
Q3	114504	18.5%
Q4	110666	17.8%

Length

Histogram of lengths of the category

Common Values (Plot)

Value	Count	Frequency (%)
q1	139258	22.4%
	138621	22.3%
q2	117491	18.9%
q3	114504	18.5%
q4	110666	17.8%

Most occurring characters

Value	Count	Frequency (%)
Q	481919	43.7%
1	139258	12.6%
-	138621	12.6%
2	117491	10.7%
3	114504	10.4%
4	110666	10.0%

Most occurring categories

Value	Count	Frequency (%)
Uppercase Letter	481919	43.7%
Decimal Number	481919	43.7%
Dash Punctuation	138621	12.6%

Most frequent character per category

Decimal Number

Value	Count	Frequency (%)
1	139258	28.9%
2	117491	24.4%
3	114504	23.8%
4	110666	23.0%

Uppercase Letter

Value	Count	Frequency (%)
Q	481919	100.0%

Dash Punctuation

Value	Count	Frequency (%)
-	138621	100.0%

Most occurring scripts

Value	Count	Frequency (%)
Common	620540	56.3%
Latin	481919	43.7%

Most frequent character per script

Common

Value	Count	Frequency (%)
1	139258	22.4%
-	138621	22.3%
2	117491	18.9%
3	114504	18.5%
4	110666	17.8%

Latin

Value	Count	Frequency (%)
Q	481919	100.0%

Most occurring blocks

Value	Count	Frequency (%)
ASCII	1102459	100.0%

Most frequent character per block

ASCII

Value	Count	Frequency (%)
Q	481919	43.7%
1	139258	12.6%
-	138621	12.6%
2	117491	10.7%
3	114504	10.4%
4	110666	10.0%

total_cites_3years
Real number (ℝ)

HIGH CORRELATION SKEWED ZEROS

Distinct	11896
Distinct (%)	1.9%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	476.96202

Minimum	0
Maximum	321255
Zeros	65410
Zeros (%)	10.5%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	0
5-th percentile	0
Q1	7
median	42
Q3	199
95-th percentile	1797
Maximum	321255
Range	321255
Interquartile range (IQR)	192

Descriptive statistics

Standard deviation	2946.9901
Coefficient of variation (CV)	6.1786683
Kurtosis	1976.6331
Mean	476.96202
Median Absolute Deviation (MAD)	41
Skewness	33.274008
Sum	2.9597401 × 10⁸
Variance	8684750.9
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
0	65410	10.5%
1	20124	3.2%
2	16098	2.6%
3	13688	2.2%
4	12125	2.0%
5	10747	1.7%
6	9917	1.6%
7	9246	1.5%
8	8579	1.4%
9	7924	1.3%
Other values (11886)	446682	72.0%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	65410	10.5%
1	20124	3.2%
2	16098	2.6%
3	13688	2.2%
4	12125	2.0%
5	10747	1.7%
6	9917	1.6%
7	9246	1.5%
8	8579	1.4%
9	7924	1.3%

Value	Count	Frequency (%)
321255	1	< 0.1%
307069	1	< 0.1%
282400	1	< 0.1%
277415	1	< 0.1%
275478	1	< 0.1%
274206	1	< 0.1%
266827	1	< 0.1%
261696	1	< 0.1%
245865	1	< 0.1%
224506	1	< 0.1%

total_docs
Real number (ℝ)

HIGH CORRELATION SKEWED ZEROS

Distinct	2921
Distinct (%)	0.5%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	79.936992

Minimum	0
Maximum	35329
Zeros	134190
Zeros (%)	21.6%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	0
5-th percentile	0
Q1	7
median	29
Q3	72
95-th percentile	288
Maximum	35329
Range	35329
Interquartile range (IQR)	65

Descriptive statistics

Standard deviation	322.32011
Coefficient of variation (CV)	4.0321771
Kurtosis	3163.7742
Mean	79.936992
Median Absolute Deviation (MAD)	29
Skewness	44.541137
Sum	49604101
Variance	103890.25
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
0	134190	21.6%
20	8677	1.4%
24	8258	1.3%
21	8104	1.3%
16	7876	1.3%
22	7873	1.3%
23	7695	1.2%
18	7642	1.2%
25	7639	1.2%
19	7597	1.2%
Other values (2911)	414989	66.9%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	134190	21.6%
1	4178	0.7%
2	2526	0.4%
3	2375	0.4%
4	2688	0.4%
5	3245	0.5%
6	3814	0.6%
7	3950	0.6%
8	4702	0.8%
9	5115	0.8%

Value	Count	Frequency (%)
35329	1	< 0.1%
34849	1	< 0.1%
34154	1	< 0.1%
31198	1	< 0.1%
30978	1	< 0.1%
29385	1	< 0.1%
29351	1	< 0.1%
29296	1	< 0.1%
28799	1	< 0.1%
27974	1	< 0.1%

total_docs_3years
Real number (ℝ)

HIGH CORRELATION SKEWED ZEROS

Distinct	5429
Distinct (%)	0.9%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	231.09512

Minimum	0
Maximum	95106
Zeros	27877
Zeros (%)	4.5%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	0
5-th percentile	1
Q1	41
median	92
Q3	212
95-th percentile	808
Maximum	95106
Range	95106
Interquartile range (IQR)	171

Descriptive statistics

Standard deviation	842.56359
Coefficient of variation (CV)	3.6459601
Kurtosis	3356.2104
Mean	231.09512
Median Absolute Deviation (MAD)	65
Skewness	45.569964
Sum	1.4340377 × 10⁸
Variance	709913.41
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
0	27877	4.5%
1	5188	0.8%
47	3459	0.6%
58	3456	0.6%
48	3435	0.6%
60	3405	0.5%
64	3394	0.5%
54	3381	0.5%
36	3347	0.5%
45	3341	0.5%
Other values (5419)	560257	90.3%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	27877	4.5%
1	5188	0.8%
2	2835	0.5%
3	2280	0.4%
4	2080	0.3%
5	2262	0.4%
6	2482	0.4%
7	2707	0.4%
8	2909	0.5%
9	2958	0.5%

Value	Count	Frequency (%)
95106	1	< 0.1%
94281	1	< 0.1%
88185	1	< 0.1%
83879	1	< 0.1%
83565	1	< 0.1%
78760	1	< 0.1%
75545	1	< 0.1%
71349	1	< 0.1%
71205	1	< 0.1%
69817	1	< 0.1%

total_refs
Real number (ℝ)

HIGH CORRELATION SKEWED ZEROS

Distinct	25931
Distinct (%)	4.2%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	2459.6655

Minimum	0
Maximum	1469402
Zeros	153728
Zeros (%)	24.8%
Negative	0
Negative (%)	0.0%
Memory size	4.7 MiB

Quantile statistics

Minimum	0
5-th percentile	0
Q1	7
median	806
Q3	2065
95-th percentile	8946
Maximum	1469402
Range	1469402
Interquartile range (IQR)	2058

Descriptive statistics

Standard deviation	10490.972
Coefficient of variation (CV)	4.2652027
Kurtosis	3952.8919
Mean	2459.6655
Median Absolute Deviation (MAD)	806
Skewness	45.60771
Sum	1.5263208 × 10⁹
Variance	1.100605 × 10⁸
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
0	153728	24.8%
534	261	< 0.1%
558	258	< 0.1%
471	258	< 0.1%
759	257	< 0.1%
645	255	< 0.1%
575	255	< 0.1%
621	254	< 0.1%
470	254	< 0.1%
611	253	< 0.1%
Other values (25921)	464507	74.9%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	153728	24.8%
1	182	< 0.1%
2	221	< 0.1%
3	219	< 0.1%
4	239	< 0.1%
5	226	< 0.1%
6	203	< 0.1%
7	178	< 0.1%
8	180	< 0.1%
9	203	< 0.1%

Value	Count	Frequency (%)
1469402	1	< 0.1%
1388656	1	< 0.1%
1317965	1	< 0.1%
1197093	1	< 0.1%
1155366	1	< 0.1%
1115013	1	< 0.1%
1104125	1	< 0.1%
1033652	1	< 0.1%
1030225	1	< 0.1%
948277	1	< 0.1%

Auto

Heatmap
Table

	journal__sourceid	year	citable_docs_3years	h_index	journal_rating	rank	ref_per_doc	total_cites_3years	total_docs	total_docs_3years	total_refs	sjr_best_quartile
journal__sourceid	1.000	0.333	-0.367	-0.494	-0.314	0.487	-0.202	-0.313	-0.411	-0.369	-0.355	0.258
year	0.333	1.000	0.033	-0.109	0.071	0.264	0.150	0.163	-0.007	0.040	0.096	0.074
citable_docs_3years	-0.367	0.033	1.000	0.591	0.429	-0.449	0.167	0.768	0.726	0.991	0.613	0.011
h_index	-0.494	-0.109	0.591	1.000	0.823	-0.785	0.528	0.824	0.644	0.587	0.735	0.205
journal_rating	-0.314	0.071	0.429	0.823	1.000	-0.911	0.530	0.844	0.498	0.423	0.648	0.049
rank	0.487	0.264	-0.449	-0.785	-0.911	1.000	-0.399	-0.732	-0.469	-0.442	-0.556	0.516
ref_per_doc	-0.202	0.150	0.167	0.528	0.530	-0.399	1.000	0.407	0.429	0.162	0.736	0.004
total_cites_3years	-0.313	0.163	0.768	0.824	0.844	-0.732	0.407	1.000	0.627	0.763	0.707	0.029
total_docs	-0.411	-0.007	0.726	0.644	0.498	-0.469	0.429	0.627	1.000	0.736	0.858	0.010
total_docs_3years	-0.369	0.040	0.991	0.587	0.423	-0.442	0.162	0.763	0.736	1.000	0.613	0.011
total_refs	-0.355	0.096	0.613	0.735	0.648	-0.556	0.736	0.707	0.858	0.613	1.000	0.015
sjr_best_quartile	0.258	0.074	0.011	0.205	0.049	0.516	0.004	0.029	0.010	0.011	0.015	1.000

Count
Matrix

A simple visualization of nullity by column.

Nullity matrix is a data-dense display which lets you quickly visually pick out patterns in data completion.

First rows
Last rows

	journal__sourceid	year	categories	citable_docs_3years	h_index	journal_rating	rank	ref_per_doc	sjr_best_quartile	total_cites_3years	total_docs	total_docs_3years	total_refs
0	16801	1999	Biochemistry (Q1)	80	305	50.518	1	197.10	Q1	3513	30	80	5913
1	18434	1999	Biochemistry, Genetics and Molecular Biology (miscellaneous) (Q1)	1332	814	43.449	2	45.48	Q1	48292	351	1340	15964
2	20651	1999	Immunology (Q1); Immunology and Allergy (Q1)	81	309	43.020	3	180.55	Q1	4116	29	81	5236
3	18395	1999	Cell Biology (Q1); Developmental Biology (Q1)	60	226	35.051	4	165.36	Q1	1815	25	61	4134
4	14181	1999	Neuroscience (miscellaneous) (Q1)	60	248	25.760	5	162.81	Q1	1631	21	60	3419
5	22126	1999	Developmental Biology (Q1); Genetics (Q1)	888	453	25.272	6	55.78	Q1	17391	298	889	16623
6	20798	1999	Immunology (Q1); Immunology and Allergy (Q1); Infectious Diseases (Q1)	438	417	22.298	7	51.46	Q1	9207	151	438	7770
7	18503	1999	Cell Biology (Q1)	298	267	21.691	8	56.05	Q1	6602	104	318	5829
8	9500154114	1999	Mathematics (miscellaneous) (Q1); Physics and Astronomy (miscellaneous) (Q1)	55	75	20.965	9	37.94	Q1	1228	48	55	1821
9	18606	1999	Cell Biology (Q1); Molecular Biology (Q1)	202	414	20.282	10	45.67	Q1	3624	193	203	8814

	journal__sourceid	year	categories	h_index	journal_rating	rank	ref_per_doc	sjr_best_quartile	total_docs	total_refs
620530	21101043236	2021	Pediatrics, Perinatology and Child Health	1	NaN	27330	43.45	-	20	869
620531	21100853891	2021	Emergency Medicine	4	NaN	27331	20.66	-	86	1777
620532	21101042998	2021	Internal Medicine	1	NaN	27332	49.75	-	8	398
620533	21101042490	2021	Transplantation	1	NaN	27333	63.70	-	40	2548
620534	144806	2021	Electrical and Electronic Engineering	17	NaN	27334	22.32	-	31	692
620535	144807	2021	Electrical and Electronic Engineering	10	NaN	27335	20.80	-	20	416
620536	144808	2021	Computer Science Applications; Information Systems	21	NaN	27336	24.33	-	21	511
620537	144813	2021	Computer Science Applications; Control and Systems Engineering	27	NaN	27337	22.82	-	38	867
620538	21101046690	2021	Arts and Humanities (miscellaneous); Communication; History; Library and Information Sciences	0	NaN	27338	40.63	-	19	772
620539	20904	2021	Medicine (miscellaneous)	20	NaN	27339	27.19	-	134	3643

Overview

Variables

Common Values

Length

Most occurring characters

Most occurring categories

Most frequent character per category

Lowercase Letter

Uppercase Letter

Decimal Number

Other Punctuation

Space Separator

Open Punctuation

Close Punctuation

Dash Punctuation

Most occurring scripts

Most frequent character per script

Latin

Common

Most occurring blocks

Most frequent character per block

ASCII

Common Values

Length

Common Values (Plot)

Most occurring characters

Most occurring categories

Most frequent character per category

Decimal Number

Uppercase Letter

Dash Punctuation

Most occurring scripts

Most frequent character per script

Common

Latin

Most occurring blocks

Most frequent character per block

ASCII

Interactions

Correlations

Missing values

Sample