MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 01/01/01 through 01/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 264 569 833
Davis 119 2 121
Irvine 77 0 77
Los Angeles 4 138 142
Riverside 24 2 26
San Diego 27 30 57
San Francisco 21 0 21
Santa Barbara 69 64 133
Santa Cruz 41 7 48
Other - UC 1 44 45
Other-Network UC n/a 202 202
_______ ______ _____
647 1,058 1,705
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 36 359
2-4 a.m. 3 7 6
4-6 a.m. 0 0 73
6-8 a.m. 21 30 309
8-10 a.m. 153 374 3,247
10-12 a.m. 356 866 7,576
12-2 p.m. 346 864 8,031
2-4 p.m. 369 1,017 9,740
4-6 p.m. 314 851 8,132
6-8 p.m. 73 247 3,259
8-10 p.m. 40 103 1,321
10-12 p.m. 22 67 980
__________ __________ __________ _________________
Total: 1,705 4,462 43,033
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 825 1,450 2,275
Davis 289 1 290
Irvine 294 0 294
Los Angeles 13 286 299
Riverside 46 3 49
San Diego 74 45 119
San Francisco 35 0 35
Santa Barbara 317 209 526
Santa Cruz 101 8 109
Other - UC 0 88 88
Other-Network UC n/a 378 378
_______ ______ _____
1,994 2,468 4,462
Number of FIND commands by database
RLIN Bibliographic File 2,446
Anthropological Literature 873
Avery Index to Architectural Per. 584
History of Science & Technology 148
Index to Foreign Legal Periodical 69
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 83
English Short Title Catalogue 259
Total number of FIND commands 4,462
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,177 14,145 21,322
Davis 2,870 9 2,879
Irvine 2,304 0 2,304
Los Angeles 45 2,439 2,484
Riverside 657 14 671
San Diego 409 880 1,289
San Francisco 487 0 487
Santa Barbara 3,732 3,162 6,894
Santa Cruz 1,062 42 1,104
Other - UC 0 1,237 1,237
Other-Network UC n/a 2,362 2,362
_______ ______ _____
18,743 24,290 43,033
Number of Records Displayed by database
RLIN Bibliographic File 25,008
Anthropological Literature 7,908
Avery Index to Architectural Per. 5,378
History of Science & Technology 1,471
Index to Foreign Legal Periodical 333
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 871
English Short Title Catalogue 2,064
Total number of Records Displayed 43,033
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,031 60.5%
Anthropological Literature 346 20.3%
Avery Index to Architectural Per. 166 9.7%
History of Science & Technology 48 2.8%
Index to Foreign Legal Periodical 16 0.9%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 52 3.0%
English Short Title Catalogue 46 2.7%
Percent of searches done in the RCAT database 54.8%
Percent of searches done in the ANTH database 19.6%
Percent of searches done in the ARCH database 13.1%
Percent of searches done in the HSCI database 3.3%
Percent of searches done in the FLEG database 1.5%
Percent of searches done in the HLEG database 0.0%
Percent of searches done in the HLAS database 0.0%
Percent of searches done in the CDB database 1.9%
Percent of searches done in the ESTC database 5.8%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.4
Standard deviation in seconds 9.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.8
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:35
Average session length (minutes:seconds) 16:07
Longest session recorded (minutes:seconds) 354:25
Average number of searches completed per session 2.3
Retrievals per search - median 3.0
Retrievals per search - average 123.5
Retrievals per search - standard deviation 1250.1
Percent of searches completed with 0 results 26.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,293 32.0%
DISPLAY (excluding automatic displays) 2,799 39.0%
HELP 45 0.6%
EXPLAIN 54 0.8%
SET/RESET 725 10.1%
SHOW 20 0.3%
ADD ON (AND, OR, AND NOT) 153 2.1%
LOGON or LOGOFF 841 11.7%
COMMENT 0 0.0%
USE 2 0.0%
OTHER 239 3.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.6%
SHORT 58.4%
LONG 14.3%
TAGS 0.1%
FIELDS 3.7%
PERIODICALS 4.8%
COMMENTS 0.0%
Other 7.1%
RLIN Bibliographic File Database Statistics continued:
______________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 782 30.4% 157 20.1% 14 87.4 279.8
EXACT AUTHOR 3 0.1% 0 0.0% 47 67.3 35.2
CORPORATE AUTHOR 47 1.8% 12 25.5% 15 77.6 164.2
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 988 38.4% 289 29.3% 6 198.9 1732.3
EXACT TITLE/SERI 388 15.1% 108 27.8% 4 85.8 874.8
EXACT JOURNAL 3 0.1% 2 66.7% 3 3.0 0.0
SUBJECT 63 2.4% 5 7.9% 36 1117.6 4510.9
EXACT SUBJECT 4 0.2% 3 75.0% 24 24.0 0.0
SERIES 31 1.2% 19 61.3% 16 18.8 16.8
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 5 0.2% 0 0.0% 67 126.0 127.2
DATE 0 0.0% 0 0.0% 0 0.0 0.0
GOV DOC NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
REPORT NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
GE 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 6 0.2% 0 0.0% 52 47.7 22.1
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 4 0.2% 1 25.0% 1 1.0 0.0
PLACE OF PUBL. 1 0.0% 0 0.0% 1 1.0 0.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 81 3.1% 29 35.8% 5 343.9 2131.1
EXACT PE 13 0.5% 1 7.7% 7 18.5 34.5
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 155 6.0% 54 34.8% 2 22.7 81.1
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 302 13.4% 73 24.2% 5 60.4 526.8
Single 1,957 86.6% 530 27.1% 8 195.5 1606.6
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 4:29
Average session length (minutes:seconds) 9:02
Longest session recorded (minutes:seconds) 67:47
Average number of searches completed per session 2.5
Retrievals per search - median 4.0
Retrievals per search - average 136.2
Retrievals per search - standard deviation 1342.6
Percent of searches completed with 0 results 32.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 854 39.4%
DISPLAY (excluding automatic displays) 475 21.9%
HELP 99 4.6%
EXPLAIN 100 4.6%
SET/RESET 140 6.5%
SHOW 8 0.4%
ADD ON (AND, OR, AND NOT) 19 0.9%
LOGON or LOGOFF 402 18.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 72 3.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.2%
SHORT 87.8%
LONG 3.1%
TAGS 0.5%
FIELDS 2.0%
PERIODICALS 1.3%
COMMENTS 0.0%
Other 1.1%
Anthropological Literature Database Statistics continued:
_________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 289 33.2% 68 23.5% 16 33.5 51.5
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 343 39.4% 131 38.2% 7 50.1 126.3
EXACT TITLE 16 1.8% 11 68.8% 1 4.0 5.7
SUBJECT 204 23.4% 60 29.4% 29 678.7 3253.5
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 10 1.1% 4 40.0% 319 475.5 597.8
DATE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1 0.1% 0 0.0% 12 12.0 0.0
EXACT PE 2 0.2% 0 0.0% 66 66.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 6 0.7% 6 100% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 17 2.0% 9 52.9% 1 19.0 49.3
Single 837 98.0% 262 31.3% 17 206.0 1650.4
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 7:15
Average session length (minutes:seconds) 12:03
Longest session recorded (minutes:seconds) 184:28
Average number of searches completed per session 3.5
Retrievals per search - median 4.0
Retrievals per search - average 123.7
Retrievals per search - standard deviation 884.4
Percent of searches completed with 0 results 34.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 567 35.2%
DISPLAY (excluding automatic displays) 550 34.1%
HELP 45 2.8%
EXPLAIN 29 1.8%
SET/RESET 48 3.0%
SHOW 11 0.7%
ADD ON (AND, OR, AND NOT) 17 1.1%
LOGON or LOGOFF 256 15.9%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 88 5.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.9%
SHORT 66.8%
LONG 28.2%
TAGS 0.0%
FIELDS 2.5%
PERIODICALS 0.3%
COMMENTS 0.0%
Other 1.4%
Avery Index to Architectural Per. Database Statistics continued:
________________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 134 22.6% 49 36.6% 12 24.9 38.4
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 88 14.8% 40 45.5% 16 418.2 1651.4
EXACT TITLE 5 0.8% 2 40.0% 5 3.7 2.3
SUBJECT 343 57.7% 107 31.2% 18 203.5 1160.4
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 1 0.2% 1 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 9 1.5% 0 0.0% 206 218.9 212.4
PLACE OF PUBL. 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1 0.2% 0 0.0% 964 964.0 0.0
EXACT PE 2 0.3% 1 50.0% 6 6.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 11 1.9% 5 45.5% 162 463.0 610.6
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 27 4.8% 7 25.9% 96 258.8 375.2
Single 539 95.2% 191 35.4% 15 188.4 1135.5
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 3:21
Average session length (minutes:seconds) 7:20
Longest session recorded (minutes:seconds) 39:36
Average number of searches completed per session 3.1
Retrievals per search - median 2.0
Retrievals per search - average 152.1
Retrievals per search - standard deviation 1037.0
Percent of searches completed with 0 results 38.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 145 36.7%
DISPLAY (excluding automatic displays) 102 25.8%
HELP 25 6.3%
EXPLAIN 16 4.1%
SET/RESET 6 1.5%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 3 0.8%
LOGON or LOGOFF 84 21.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 14 3.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 91.3%
LONG 0.0%
TAGS 0.0%
FIELDS 1.6%
PERIODICALS 6.3%
COMMENTS 0.0%
Other 0.8%
History of Science & Technology Database Statistics continued:
______________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 49 33.3% 18 36.7% 31 42.4 45.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 32 21.8% 9 28.1% 8 26.5 41.8
EXACT TITLE 5 3.4% 4 80.0% 1 1.0 0.0
EXACT JOURNAL 1 0.7% 0 0.0% 2 2.0 0.0
SUBJECT 55 37.4% 23 41.8% 83 252.9 332.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
EXACT SERIES 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT CATEGORY 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 5 3.4% 1 20.0% 6 3124.3 6239.8
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 0 0.0% 0 0.0% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 2 1.4% 1 50.0% 1 1.0 0.0
Single 143 98.6% 53 37.1% 29 250.2 1323.4
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 3:21
Average session length (minutes:seconds) 6:24
Longest session recorded (minutes:seconds) 17:43
Average number of searches completed per session 4.3
Retrievals per search - median 1.0
Retrievals per search - average 54.8
Retrievals per search - standard deviation 194.9
Percent of searches completed with 0 results 44.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 69 50.0%
DISPLAY (excluding automatic displays) 26 18.8%
HELP 5 3.6%
EXPLAIN 2 1.4%
SET/RESET 3 2.2%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 27 19.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 6 4.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 97.4%
LONG 2.6%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
Index to Foreign Legal Periodical Database Statistics continued:
________________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 39 56.5% 13 33.3% 5 9.9 13.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 13 18.8% 4 30.8% 16 163.9 235.0
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 15 21.7% 12 80.0% 946 682.7 592.6
EXACT SUBJECT 2 2.9% 2 100% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
PLACE OF PUBL. 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 0 0.0% 0 0.0% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 69 100% 31 44.9% 5 99.5 255.5
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 2:58
Average session length (minutes:seconds) 5:11
Longest session recorded (minutes:seconds) 20:13
Average number of searches completed per session 1.6
Retrievals per search - median 1.0
Retrievals per search - average 156.1
Retrievals per search - standard deviation 555.0
Percent of searches completed with 0 results 42.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 79 25.4%
DISPLAY (excluding automatic displays) 55 17.7%
HELP 36 11.6%
EXPLAIN 24 7.7%
SET/RESET 7 2.3%
SHOW 5 1.6%
ADD ON (AND, OR, AND NOT) 4 1.3%
LOGON or LOGOFF 88 28.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 13 4.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.4%
SHORT 79.4%
LONG 5.9%
TAGS 0.0%
FIELDS 1.5%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 8.8%
Chicano Database Statistics continued:
______________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 16 20.3% 6 37.5% 13 56.4 88.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 22 27.8% 11 50.0% 2 9.3 22.9
EXACT TITLE 3 3.8% 1 33.3% 2 1.5 0.7
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 28 35.4% 6 21.4% 30 449.6 983.8
EXACT SUBJECT 7 8.9% 5 71.4% 1,077 1076.5 132.2
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 3 3.8% 3 100% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 79 100% 32 40.5% 12 270.5 719.0
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 11:55
Average session length (minutes:seconds) 13:46
Longest session recorded (minutes:seconds) 52:49
Average number of searches completed per session 5.6
Retrievals per search - median 2.0
Retrievals per search - average 21.8
Retrievals per search - standard deviation 77.5
Percent of searches completed with 0 results 27.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 257 36.8%
DISPLAY (excluding automatic displays) 341 48.9%
HELP 4 0.6%
EXPLAIN 3 0.4%
SET/RESET 11 1.6%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 2 0.3%
LOGON or LOGOFF 75 10.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 5 0.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.0%
SHORT 46.8%
LONG 51.2%
TAGS 0.0%
FIELDS 0.8%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.3%
English Short Title Catalogue Database Statistics continued:
____________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
SUBJECT 3 0.8% 1 33.3% 6 6.0 5.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 67 17.5% 14 20.9% 7 35.5 56.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CORP. AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 171 44.6% 53 31.0% 3 12.7 39.1
EXACT TITLE 2 0.5% 1 50.0% 2 2.0 0.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT UNIFORM TI 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 14 3.7% 3 21.4% 5 205.1 278.7
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
IMPRINT YEAR 126 32.9% 38 30.2% 2 3.5 4.6
COUNTRY CODE 0 0.0% 0 0.0% 0 0.0 0.0
SHELFMARK 0 0.0% 0 0.0% 0 0.0 0.0
HOLDING LIBRARY 0 0.0% 0 0.0% 0 0.0 0.0
INDEXED BY 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 0 0.0% 0 0.0% 0 0.0 0.0
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 0 0.0% 0 0.0% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 126 49.0% 38 30.2% 2 3.5 4.6
Single 131 51.0% 34 26.0% 11 55.1 119.6
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 13.4%
Ten most frequent errors:
1. First word of command is invalid 24.8%
2. NS command - no next screen 21.2%
3. FIND command with invalid index name 10.0%
4. Index invalid in current database 5.0%
5. Max. # of ports to a Z39 db are in use 4.1%
6. NS of SHOW/EXP command-no next screen 2.8%
7. Z39.50 host unable to process search 2.4%
8. DISPLAY command contains invalid word 2.3%
9. Search term missing from search command 1.6%
10. Valid command at an inappropriate time 1.3%
11. All others 24.5%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 21.9%
2. LOCATE (Z39.50 DBS) 17.1%
3. FIND (Z39.50 DBS) 9.6%
4. LOCATE (Z39.50 DBS) 7.5%
5. INDEXES (RCAT DB) 5.7%
6. Unrecognized term 5.3%
7. INDEXES (ANTH DB) 4.4%
8. COMMANDS (Z39.50 DBS) 3.9%
9. GUIDE (Z39.50 non-A&I DBS) 3.5%
10. DISPLAY (Z39.50 DBS) 1.8%
11. All others 19.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.8%
2. First word of command is invalid 19.5%
3. FIND command with invalid index name 12.1%
4. F/BR with index invalid in current DB 7.4%
5. DISPLAY command-complete in one screen 6.8%
6. FIND command with zero results 5.1%
7. DISPLAY command - middle of >1 screen 3.1%
8. FIND command retrieves 1 book 2.9%
9. DISPLAY command-first of >1 screen 2.9%
10. NS command - no next screen 2.1%
11. All others 15.4%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. SEARCH 31.8%
3. SETTINGS (Z39.50 DBS) 9.1%
4. GLOSSARY 9.1%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)