MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 01/01/00 through 01/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 299 527 826
Davis 187 0 187
Irvine 66 0 66
Los Angeles 28 239 267
Riverside 48 1 49
San Diego 45 32 77
San Francisco 41 0 41
Santa Barbara 140 52 192
Santa Cruz 127 55 182
Other - UC 9 28 37
Other-Network UC n/a 207 207
_______ ______ _____
990 1,141 2,131
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 72 591
2-4 a.m. 4 12 77
4-6 a.m. 1 1 35
6-8 a.m. 21 80 766
8-10 a.m. 222 555 4,934
10-12 a.m. 386 1,200 10,569
12-2 p.m. 397 1,569 11,010
2-4 p.m. 529 2,086 15,259
4-6 p.m. 338 1,582 10,473
6-8 p.m. 113 379 3,754
8-10 p.m. 74 210 1,758
10-12 p.m. 31 101 689
__________ __________ __________ _________________
Total: 2,131 7,847 59,915
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 863 3,318 4,181
Davis 372 1 373
Irvine 177 0 177
Los Angeles 101 782 883
Riverside 117 1 118
San Diego 180 52 232
San Francisco 200 0 200
Santa Barbara 410 155 565
Santa Cruz 405 143 548
Other - UC 12 81 93
Other-Network UC n/a 477 477
_______ ______ _____
2,837 5,010 7,847
Number of FIND commands by database
RLIN Bibliographic File 2,559
Anthropological Literature 1,805
Avery Index to Architectural Per. 990
History of Science & Technology 201
Index to Foreign Legal Periodical 1,862
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 310
English Short Title Catalogue 120
Total number of FIND commands 7,847
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,027 16,069 25,096
Davis 3,767 8 3,775
Irvine 1,178 0 1,178
Los Angeles 568 6,228 6,796
Riverside 752 41 793
San Diego 1,487 391 1,878
San Francisco 1,830 0 1,830
Santa Barbara 3,275 2,754 6,029
Santa Cruz 4,247 1,152 5,399
Other - UC 16 1,689 1,705
Other-Network UC n/a 5,436 5,436
_______ ______ _____
26,147 33,768 59,915
Number of Records Displayed by database
RLIN Bibliographic File 24,223
Anthropological Literature 15,334
Avery Index to Architectural Per. 10,259
History of Science & Technology 2,712
Index to Foreign Legal Periodical 3,787
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 2,292
English Short Title Catalogue 1,308
Total number of Records Displayed 59,915
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,049 49.2%
Anthropological Literature 520 24.4%
Avery Index to Architectural Per. 296 13.9%
History of Science & Technology 64 3.0%
Index to Foreign Legal Periodical 25 1.2%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 122 5.7%
English Short Title Catalogue 55 2.6%
Percent of searches done in the RCAT database 32.6%
Percent of searches done in the ANTH database 23.0%
Percent of searches done in the ARCH database 12.6%
Percent of searches done in the HSCI database 2.6%
Percent of searches done in the FLEG database 23.7%
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 4.0%
Percent of searches done in the ESTC database 1.5%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.4
Standard deviation in seconds 6.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.9
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:40
Average session length (minutes:seconds) 15:29
Longest session recorded (minutes:seconds) 130:52
Average number of searches completed per session 2.4
Retrievals per search - median 3.0
Retrievals per search - average 202.2
Retrievals per search - standard deviation 2502.7
Percent of searches completed with 0 results 26.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,399 30.8%
DISPLAY (excluding automatic displays) 3,049 39.1%
HELP 73 0.9%
EXPLAIN 94 1.2%
SET/RESET 708 9.1%
SHOW 71 0.9%
ADD ON (AND, OR, AND NOT) 160 2.1%
LOGON or LOGOFF 915 11.7%
COMMENT 0 0.0%
USE 5 0.1%
OTHER 316 4.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.6%
SHORT 54.0%
LONG 14.5%
TAGS 0.4%
FIELDS 4.3%
PERIODICALS 5.7%
COMMENTS 0.0%
Other 11.5%
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 812 30.5% 185 22.8% 13 137.5 836.5
EXACT AUTHOR 47 1.8% 5 10.6% 9 22.4 29.0
CORPORATE AUTHOR 52 2.0% 14 26.9% 23 75.2 186.2
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 1,121 42.1% 328 29.3% 5 341.1 3251.1
EXACT TITLE/SERI 260 9.8% 56 21.5% 4 157.6 1302.9
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 79 3.0% 9 11.4% 68 1340.4 9426.5
EXACT SUBJECT 10 0.4% 2 20.0% 43 2694.5 7405.5
SERIES 28 1.1% 11 39.3% 14 74.6 126.6
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 7 0.3% 1 14.3% 25 80.7 137.3
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 2 0.1% 0 0.0% 7 7.0 5.7
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 6 0.2% 3 50.0% 1 1.3 0.6
PLACE OF PUBL. 5 0.2% 4 80.0% 30 30.0 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 110 4.1% 41 37.3% 3 70.4 412.0
EXACT PE 29 1.1% 9 31.0% 3 9.7 14.0
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 97 3.6% 32 33.0% 4 39.9 96.5
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 281 11.8% 85 30.2% 4 35.4 94.2
Single 2,097 88.2% 528 25.2% 7 320.7 3175.5
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 5:10
Average session length (minutes:seconds) 9:18
Longest session recorded (minutes:seconds) 74:26
Average number of searches completed per session 3.5
Retrievals per search - median 4.0
Retrievals per search - average 225.0
Retrievals per search - standard deviation 1268.3
Percent of searches completed with 0 results 35.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,735 39.5%
DISPLAY (excluding automatic displays) 1,032 23.5%
HELP 240 5.5%
EXPLAIN 241 5.5%
SET/RESET 160 3.6%
SHOW 18 0.4%
ADD ON (AND, OR, AND NOT) 70 1.6%
LOGON or LOGOFF 733 16.7%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 164 3.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.3%
SHORT 82.6%
LONG 4.1%
TAGS 0.2%
FIELDS 2.2%
PERIODICALS 3.7%
COMMENTS 0.0%
Other 1.8%
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 459 25.6% 114 24.8% 16 42.2 105.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 443 24.7% 161 36.3% 12 121.2 397.7
EXACT TITLE 32 1.8% 20 62.5% 3 126.2 362.9
SUBJECT 726 40.4% 278 38.3% 39 729.1 2414.6
EXACT SUBJECT 30 1.7% 22 73.3% 132 132.6 94.1
EXACT JOURNAL 41 2.3% 16 39.0% 243 1059.9 1596.9
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 11 0.6% 7 63.6% 5 41.0 74.8
EXACT PE 25 1.4% 9 36.0% 3 31.8 56.0
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 29 1.6% 6 20.7% 60 65.0 73.3
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 63 3.6% 24 38.1% 12 50.3 77.9
Single 1,669 96.4% 585 35.1% 23 371.5 1618.9
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 5:47
Average session length (minutes:seconds) 10:03
Longest session recorded (minutes:seconds) 77:18
Average number of searches completed per session 3.3
Retrievals per search - median 4.0
Retrievals per search - average 136.2
Retrievals per search - standard deviation 734.1
Percent of searches completed with 0 results 31.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 964 27.6%
DISPLAY (excluding automatic displays) 1,684 48.1%
HELP 80 2.3%
EXPLAIN 71 2.0%
SET/RESET 98 2.8%
SHOW 6 0.2%
ADD ON (AND, OR, AND NOT) 26 0.7%
LOGON or LOGOFF 428 12.2%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 140 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.8%
SHORT 74.8%
LONG 12.4%
TAGS 0.0%
FIELDS 0.8%
PERIODICALS 10.4%
COMMENTS 0.0%
Other 0.7%
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 92 9.2% 34 37.0% 9 24.7 46.8
EXACT AUTHOR 2 0.2% 1 50.0% 84 84.0 0.0
CORPORATE AUTHOR 4 0.4% 4 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 244 24.4% 81 33.2% 6 143.2 764.1
EXACT TITLE 7 0.7% 4 57.1% 11 41.0 58.1
SUBJECT 505 50.4% 165 32.7% 30 258.0 1067.8
EXACT SUBJECT 4 0.4% 4 100% 0 0.0 0.0
EXACT JOURNAL 10 1.0% 4 40.0% 2,710 2010.2 1624.9
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 2 0.2% 1 50.0% 1 1.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 14 1.4% 2 14.3% 89 182.0 266.2
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 78 7.8% 13 16.7% 9 109.5 268.6
EXACT PE 26 2.6% 3 11.5% 7 45.7 106.1
RPE 2 0.2% 0 0.0% 28 28.0 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 1.1% 2 18.2% 20 59.9 130.0
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 33 3.4% 9 27.3% 15 96.8 203.9
Single 930 96.6% 299 32.1% 15 207.0 910.4
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 5:11
Average session length (minutes:seconds) 11:03
Longest session recorded (minutes:seconds) 73:58
Average number of searches completed per session 3.1
Retrievals per search - median 6.0
Retrievals per search - average 68.9
Retrievals per search - standard deviation 252.8
Percent of searches completed with 0 results 29.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 198 33.7%
DISPLAY (excluding automatic displays) 233 39.7%
HELP 17 2.9%
EXPLAIN 7 1.2%
SET/RESET 11 1.9%
SHOW 1 0.2%
ADD ON (AND, OR, AND NOT) 3 0.5%
LOGON or LOGOFF 105 17.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 12 2.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.7%
SHORT 88.1%
LONG 7.1%
TAGS 0.0%
FIELDS 0.7%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 1.1%
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 79 40.1% 24 30.4% 25 42.4 79.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 54 27.4% 13 24.1% 22 125.0 264.8
EXACT TITLE 28 14.2% 8 28.6% 2 20.9 70.8
EXACT JOURNAL 1 0.5% 0 0.0% 24 24.0 0.0
SUBJECT 31 15.7% 10 32.3% 15 276.4 635.4
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 4 2.0% 1 25.0% 8 23.0 30.4
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 197 100% 56 28.4% 18 97.7 296.7
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 17:07
Average session length (minutes:seconds) 26:27
Longest session recorded (minutes:seconds) 123:01
Average number of searches completed per session 74.5
Retrievals per search - median 3.0
Retrievals per search - average 19.8
Retrievals per search - standard deviation 289.0
Percent of searches completed with 0 results 10.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,510 54.2%
DISPLAY (excluding automatic displays) 829 29.8%
HELP 7 0.3%
EXPLAIN 23 0.8%
SET/RESET 6 0.2%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 352 12.6%
LOGON or LOGOFF 44 1.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 14 0.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 99.3%
LONG 0.0%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.7%
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 1,389 85.9% 103 7.4% 6 12.5 25.2
EXACT AUTHOR 2 0.1% 2 100% 0 0.0 0.0
TITLE WORD 204 12.6% 41 20.1% 1 13.8 101.1
EXACT TITLE 1 0.1% 1 100% 0 0.0 0.0
EXACT JOURNAL 1 0.1% 0 0.0% 70 70.0 0.0
SUBJECT 15 0.9% 8 53.3% 580 534.1 507.9
EXACT SUBJECT 0 0.0% 0 0.0% 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 4 0.2% 0 0.0% 1,213 3610.3 5708.2
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 1 0.1% 1 100% 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 107 7.1% 12 11.2% 1 1.7 1.3
Single 1,403 92.9% 132 9.4% 6 28.5 349.5
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 4:58
Average session length (minutes:seconds) 7:55
Longest session recorded (minutes:seconds) 42:49
Average number of searches completed per session 2.5
Retrievals per search - median 1.0
Retrievals per search - average 61.0
Retrievals per search - standard deviation 215.8
Percent of searches completed with 0 results 38.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 295 33.6%
DISPLAY (excluding automatic displays) 198 22.6%
HELP 65 7.4%
EXPLAIN 53 6.0%
SET/RESET 18 2.1%
SHOW 6 0.7%
ADD ON (AND, OR, AND NOT) 15 1.7%
LOGON or LOGOFF 192 21.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 36 4.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.8%
SHORT 73.4%
LONG 24.0%
TAGS 0.0%
FIELDS 0.8%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.1%
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 39 13.0% 20 51.3% 12 24.5 26.8
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 61 20.4% 22 36.1% 3 13.7 29.1
EXACT TITLE 4 1.3% 2 50.0% 48 48.0 62.2
ABSTRACT 3 1.0% 2 66.7% 3 3.0 0.0
SUBJECT 183 61.2% 66 36.1% 23 149.4 332.5
EXACT SUBJECT 4 1.3% 2 50.0% 23 23.0 28.3
EXACT JOURNAL 2 0.7% 0 0.0% 20 19.5 10.6
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 3 1.0% 1 33.3% 1 1.0 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 4 1.4% 2 50.0% 8 7.5 9.2
Single 291 98.6% 111 38.1% 7 103.5 275.5
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 7:15
Average session length (minutes:seconds) 9:50
Longest session recorded (minutes:seconds) 40:07
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 166.4
Retrievals per search - standard deviation 797.9
Percent of searches completed with 0 results 30.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 114 27.2%
DISPLAY (excluding automatic displays) 130 31.0%
HELP 22 5.3%
EXPLAIN 32 7.6%
SET/RESET 14 3.3%
SHOW 2 0.5%
ADD ON (AND, OR, AND NOT) 6 1.4%
LOGON or LOGOFF 84 20.0%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 15 3.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 14.1%
SHORT 56.4%
LONG 26.9%
TAGS 0.0%
FIELDS 0.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.9%
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 20 16.1% 9 45.0% 28 245.2 381.5
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 41 33.1% 13 31.7% 34 83.0 153.1
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 42 33.9% 4 9.5% 16 330.7 1343.0
EXACT TITLE 12 9.7% 7 58.3% 3 4.6 4.1
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 3 2.4% 0 0.0% 24 23.7 6.5
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 1 0.8% 0 0.0% 1 1.0 0.0
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 2 1.6% 0 0.0% 1,145 1145.0 1617.9
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 2 1.6% 2 100% 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 1 0.8% 0 0.0% 42 42.0 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 9 7.9% 2 22.2% 9 10.4 9.8
Single 105 92.1% 31 29.5% 34 268.5 1005.0
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 12.4%
Ten most frequent errors:
1. First word of command is invalid 31.1%
2. NS command - no next screen 19.8%
3. FIND command with invalid index name 10.4%
4. Index invalid in current database 4.4%
5. Valid command at an inappropriate time 2.9%
6. DISPLAY command contains invalid word 2.8%
7. PS command - no previous screen 2.4%
8. Z39.50 host unable to process search 1.8%
9. Search term missing from search command 1.6%
10. Max. # of ports to a Z39 db are in use 1.1%
11. All others 21.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 19.0%
2. GUIDE (Z39.50 A&I DBS) 18.2%
3. FIND (Z39.50 DBS) 6.3%
4. COMMANDS (Z39.50 DBS) 6.0%
5. Unrecognized term 5.6%
6. INDEXES (ANTH DB) 5.4%
7. INDEXES (RCAT DB) 4.2%
8. GUIDE (Z39.50 non-A&I DBS) 3.5%
9. LOCATE (Z39.50 DBS) 2.7%
10. LOCATIONS (ESTC DB) 1.9%
11. All others 27.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.6%
2. First word of command is invalid 17.0%
3. FIND command with invalid index name 8.7%
4. DISPLAY command-complete in one screen 7.6%
5. FIND command with zero results 6.7%
6. F/BR with index invalid in current DB 6.0%
7. DISPLAY command - middle of >1 screen 5.8%
8. DISPLAY command-first of >1 screen 4.6%
9. DISPLAY command - last of >1 screen 1.8%
10. Valid command at an inappropriate time 1.6%
11. All others 15.7%
Ten most frequent SHOW requests:
1. HISTORY 62.5%
2. SEARCH 17.3%
3. FORM NAMES (RCAT DB) 5.8%
4. GLOSSARY 3.8%
5. Z39.50 NEWS 2.9%
6. SETTINGS (Z39.50 DBS) 1.9%
7. PAGESIZE 1.0%
8. DATABASES 1.0%
11. All others 3.8%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)