MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 08/01/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 199 366 565
Davis 56 1 57
Irvine 73 0 73
Los Angeles 1 67 68
Riverside 41 0 41
San Diego 28 24 52
San Francisco 25 0 25
Santa Barbara 70 17 87
Santa Cruz 7 1 8
Other - UC 4 33 37
Other-Network UC n/a 333 333
_______ ______ _____
504 842 1,346
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1 2 7
2-4 a.m. 2 3 12
4-6 a.m. 1 1 8
6-8 a.m. 26 51 985
8-10 a.m. 165 383 3,582
10-12 a.m. 273 792 4,663
12-2 p.m. 265 706 6,960
2-4 p.m. 327 785 6,319
4-6 p.m. 199 705 8,173
6-8 p.m. 53 206 2,462
8-10 p.m. 26 122 1,986
10-12 p.m. 8 25 423
__________ __________ __________ _________________
Total: 1,346 3,781 35,580
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 876 991 1,867
Davis 109 1 110
Irvine 161 0 161
Los Angeles 1 150 151
Riverside 62 0 62
San Diego 96 51 147
San Francisco 36 0 36
Santa Barbara 229 42 271
Santa Cruz 36 0 36
Other - UC 1 461 462
Other-Network UC n/a 478 478
_______ ______ _____
1,607 2,174 3,781
Number of FIND commands by database
RLIN Bibliographic File 2,823
Anthropological Literature 380
Avery Index to Architectural Per. 374
History of Science & Technology 59
Index to Foreign Legal Periodical 7
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 26
English Short Title Catalogue 112
Total number of FIND commands 3,781
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,799 8,293 13,092
Davis 2,192 0 2,192
Irvine 1,454 0 1,454
Los Angeles 12 1,857 1,869
Riverside 246 0 246
San Diego 784 1,658 2,442
San Francisco 1,002 0 1,002
Santa Barbara 2,198 280 2,478
Santa Cruz 264 0 264
Other - UC 12 6,300 6,312
Other-Network UC n/a 4,229 4,229
_______ ______ _____
12,963 22,617 35,580
Number of Records Displayed by database
RLIN Bibliographic File 29,041
Anthropological Literature 2,424
Avery Index to Architectural Per. 2,212
History of Science & Technology 236
Index to Foreign Legal Periodical 1
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 89
English Short Title Catalogue 1,577
Total number of Records Displayed 35,580
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 985 73.2%
Anthropological Literature 134 10.0%
Avery Index to Architectural Per. 132 9.8%
History of Science & Technology 31 2.3%
Index to Foreign Legal Periodical 4 0.3%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 22 1.6%
English Short Title Catalogue 38 2.8%
Percent of searches done in the RCAT database 74.7%
Percent of searches done in the ANTH database 10.1%
Percent of searches done in the ARCH database 9.9%
Percent of searches done in the HSCI database 1.6%
Percent of searches done in the FLEG database 0.2%
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 0.7%
Percent of searches done in the ESTC database 3.0%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.0
Standard deviation in seconds 5.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 2.6
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:54
Average session length (minutes:seconds) 17:27
Longest session recorded (minutes:seconds) 132:24
Average number of searches completed per session 2.8
Retrievals per search - median 3.0
Retrievals per search - average 93.2
Retrievals per search - standard deviation 1313.8
Percent of searches completed with 0 results 26.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,630 32.1%
DISPLAY (excluding automatic displays) 3,543 43.2%
HELP 27 0.3%
EXPLAIN 44 0.5%
SET/RESET 721 8.8%
SHOW 19 0.2%
ADD ON (AND, OR, AND NOT) 193 2.4%
LOGON or LOGOFF 727 8.9%
COMMENT 0 0.0%
USE 5 0.1%
OTHER 283 3.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.7%
SHORT 56.1%
LONG 18.1%
TAGS 0.0%
FIELDS 3.6%
PERIODICALS 4.2%
COMMENTS 0.0%
Other 7.3%
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 663 23.9% 123 18.6% 26 113.3 306.2
EXACT AUTHOR 21 0.8% 2 9.5% 49 150.3 314.4
CORPORATE AUTHOR 27 1.0% 8 29.6% 17 78.3 211.7
EXACT CORPORATE 2 0.1% 0 0.0% 2 2.0 1.4
TITLE WORD 1,050 37.9% 289 27.5% 7 178.7 2386.2
EXACT TITLE/SERI 581 21.0% 120 20.7% 3 84.5 901.3
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 34 1.2% 13 38.2% 19 224.0 333.0
EXACT SUBJECT 4 0.1% 2 50.0% 1,902 1901.5 2655.2
SERIES 15 0.5% 2 13.3% 37 81.8 124.6
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 10 0.4% 1 10.0% 15 44.7 70.8
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 0 0.0% 0 0.0% 0 0.0 0.0
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 29 1.0% 10 34.5% 1 1.0 0.0
PLACE OF PUBL. 0 0.0% 0 0.0% 0 0.0 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 104 3.8% 24 23.1% 5 102.4 558.4
EXACT PE 21 0.8% 5 23.8% 3 34.1 61.7
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 207 7.5% 99 47.8% 2 9.9 25.4
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 165 6.4% 42 25.5% 7 20.8 45.5
Single 2,432 93.6% 614 25.2% 7 140.3 1624.7
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 8:55
Average session length (minutes:seconds) 11:17
Longest session recorded (minutes:seconds) 71:23
Average number of searches completed per session 2.8
Retrievals per search - median 3.0
Retrievals per search - average 95.0
Retrievals per search - standard deviation 444.3
Percent of searches completed with 0 results 30.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 369 42.8%
DISPLAY (excluding automatic displays) 188 21.8%
HELP 25 2.9%
EXPLAIN 21 2.4%
SET/RESET 74 8.6%
SHOW 7 0.8%
ADD ON (AND, OR, AND NOT) 11 1.3%
LOGON or LOGOFF 134 15.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 33 3.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.7%
SHORT 88.4%
LONG 3.8%
TAGS 4.1%
FIELDS 1.4%
PERIODICALS 0.3%
COMMENTS 0.0%
Other 1.4%
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 150 37.4% 39 26.0% 12 31.7 87.6
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 127 31.7% 36 28.3% 9 99.5 311.6
EXACT TITLE 7 1.7% 2 28.6% 1 1.0 0.0
SUBJECT 79 19.7% 37 46.8% 17 426.3 1119.7
EXACT SUBJECT 2 0.5% 1 50.0% 27 27.0 0.0
EXACT JOURNAL 7 1.7% 0 0.0% 982 811.0 818.2
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 1.0% 2 50.0% 10 10.0 7.1
EXACT PE 1 0.2% 1 100% 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 24 6.0% 9 37.5% 2 4.7 7.0
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 29 7.9% 11 37.9% 2 12.9 37.0
Single 340 92.1% 102 30.0% 14 150.5 554.3
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 5:53
Average session length (minutes:seconds) 7:33
Longest session recorded (minutes:seconds) 30:18
Average number of searches completed per session 2.8
Retrievals per search - median 4.0
Retrievals per search - average 91.9
Retrievals per search - standard deviation 748.3
Percent of searches completed with 0 results 32.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 358 32.1%
DISPLAY (excluding automatic displays) 423 37.9%
HELP 8 0.7%
EXPLAIN 16 1.4%
SET/RESET 43 3.9%
SHOW 3 0.3%
ADD ON (AND, OR, AND NOT) 16 1.4%
LOGON or LOGOFF 182 16.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 66 5.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 53.1%
LONG 42.4%
TAGS 0.0%
FIELDS 1.0%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 0.0%
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 49 12.9% 17 34.7% 14 33.0 51.2
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 60 15.7% 28 46.7% 15 692.6 2493.4
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 240 63.0% 72 30.0% 14 55.7 124.1
EXACT SUBJECT 1 0.3% 1 100% 0 0.0 0.0
EXACT JOURNAL 3 0.8% 1 33.3% 322 321.5 400.9
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 6 1.6% 3 50.0% 428 3629.7 5726.5
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 6 1.6% 1 16.7% 91 90.6 0.9
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 3 0.8% 0 0.0% 1 2.0 1.7
EXACT PE 5 1.3% 0 0.0% 4 4.6 4.2
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 8 2.1% 0 0.0% 8 8.8 5.9
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 23 6.4% 7 30.4% 28 689.8 2547.7
Single 335 93.6% 109 32.5% 13 99.9 681.8
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 1:49
Average session length (minutes:seconds) 4:24
Longest session recorded (minutes:seconds) 19:33
Average number of searches completed per session 1.9
Retrievals per search - median 0.0
Retrievals per search - average 40.6
Retrievals per search - standard deviation 139.0
Percent of searches completed with 0 results 52.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 56 34.1%
DISPLAY (excluding automatic displays) 23 14.0%
HELP 11 6.7%
EXPLAIN 8 4.9%
SET/RESET 9 5.5%
SHOW 1 0.6%
ADD ON (AND, OR, AND NOT) 3 1.8%
LOGON or LOGOFF 44 26.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 9 5.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 97.0%
LONG 0.0%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
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 23 40.3% 15 65.2% 8 64.9 143.8
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 26 45.6% 9 34.6% 8 55.6 102.2
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 8 14.0% 5 62.5% 23 309.7 515.7
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 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 1 1.8% 1 100% 0 0.0 0.0
Single 55 98.2% 27 49.1% 9 85.5 193.7
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 1:15
Average session length (minutes:seconds) 2:28
Longest session recorded (minutes:seconds) 5:38
Average number of searches completed per session 1.8
Retrievals per search - median 1.0
Retrievals per search - average 303.6
Retrievals per search - standard deviation 514.9
Percent of searches completed with 0 results 42.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 7 41.2%
DISPLAY (excluding automatic displays) 0 0.0%
HELP 2 11.8%
EXPLAIN 1 5.9%
SET/RESET 1 5.9%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 6 35.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 0 0.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 100%
LONG 0.0%
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 1 14.3% 0 0.0% 14 14.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 2 28.6% 2 100% 0 0.0 0.0
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 4 57.1% 1 25.0% 986 703.7 612.4
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 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 7 100% 3 42.9% 500 531.3 607.4
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 1:59
Average session length (minutes:seconds) 2:21
Longest session recorded (minutes:seconds) 5:40
Average number of searches completed per session 1.2
Retrievals per search - median 0.0
Retrievals per search - average 55.8
Retrievals per search - standard deviation 262.1
Percent of searches completed with 0 results 61.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 26 25.5%
DISPLAY (excluding automatic displays) 8 7.8%
HELP 11 10.8%
EXPLAIN 11 10.8%
SET/RESET 4 3.9%
SHOW 2 2.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 35 34.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 5 4.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 100%
LONG 0.0%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
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 7 26.9% 4 57.1% 8 13.3 15.7
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 CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 4 15.4% 3 75.0% 5 5.0 0.0
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 13 50.0% 8 61.5% 7 278.2 593.8
EXACT SUBJECT 2 7.7% 1 50.0% 16 16.0 0.0
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 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 26 100% 16 61.5% 8 145.2 420.0
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 10:43
Average session length (minutes:seconds) 10:23
Longest session recorded (minutes:seconds) 30:07
Average number of searches completed per session 2.9
Retrievals per search - median 3.0
Retrievals per search - average 63.0
Retrievals per search - standard deviation 191.2
Percent of searches completed with 0 results 38.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 112 30.9%
DISPLAY (excluding automatic displays) 132 36.4%
HELP 7 1.9%
EXPLAIN 22 6.1%
SET/RESET 11 3.0%
SHOW 3 0.8%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 60 16.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 16 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 44.8%
LONG 39.6%
TAGS 0.0%
FIELDS 3.2%
PERIODICALS 1.3%
COMMENTS 0.0%
Other 8.4%
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 12 9.2% 5 41.7% 263 202.6 103.3
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 28 21.5% 16 57.1% 11 25.4 25.9
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 51 39.2% 14 27.4% 9 90.1 297.9
EXACT TITLE 2 1.5% 2 100% 0 0.0 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 2 1.5% 2 100% 0 0.0 0.0
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 15 11.5% 3 20.0% 5 12.3 20.8
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 1 0.8% 1 100% 0 0.0 0.0
INDEXED BY 4 3.1% 1 25.0% 3 4.0 3.6
NOTES 11 8.5% 3 27.3% 322 247.3 148.3
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 1 0.8% 1 100% 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 1 0.8% 0 0.0% 13 13.0 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 2 1.5% 1 50.0% 1 1.0 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 18 16.1% 6 33.3% 5 12.3 20.8
Single 94 83.9% 37 39.4% 12 121.3 255.6
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 25.3%
2. First word of command is invalid 24.0%
3. FIND command with invalid index name 6.9%
4. Max. # of ports to a Z39 db are in use 4.1%
5. DISPLAY command contains invalid word 3.7%
6. Index invalid in current database 3.6%
7. Z39.50 host unable to process search 2.2%
8. PS command - no previous screen 1.9%
9. Search term missing from search command 1.2%
10. Valid command at an inappropriate time 1.1%
11. All others 25.9%
Ten most frequent EXPLAIN requests:
1. FIND (Z39.50 DBS) 10.6%
2. GUIDE (Z39.50 A&I DBS) 8.9%
3. GUIDE (Z39.50 non-A&I DBS) 8.9%
4. INDEXES (RCAT DB) 7.3%
5. LOCATE (Z39.50 DBS) 6.5%
6. Unrecognized term 5.7%
7. DISPLAY (Z39.50 DBS) 4.9%
8. LOCATE (Z39.50 DBS) 4.1%
9. FORM (RCAT DB) 3.3%
10. INDEXES (ESTC DB) 3.3%
11. All others 36.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.7%
2. First word of command is invalid 15.4%
3. FIND command with zero results 8.4%
4. F/BR with index invalid in current DB 7.9%
5. DISPLAY command-complete in one screen 6.5%
6. DISPLAY command - middle of >1 screen 6.5%
7. NS command - no next screen 4.7%
8. FIND command with invalid index name 3.7%
9. DISPLAY command-first of >1 screen 2.8%
10. DISPLAY command contains invalid word 2.3%
11. All others 15.9%
Ten most frequent SHOW requests:
1. HISTORY 67.6%
2. SEARCH 11.8%
3. SETTINGS (Z39.50 DBS) 8.8%
4. GLOSSARY 5.9%
5. 9903 2.9%
11. All others 2.9%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)