MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 02/01/02 through 02/28/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 431 421 852
Davis 106 10 116
Irvine 42 0 42
Los Angeles 2 250 252
Riverside 28 1 29
San Diego 49 26 75
San Francisco 12 0 12
Santa Barbara 161 49 210
Santa Cruz 6 12 18
Other - UC 0 40 40
Other-Network UC n/a 1,635 1,635
_______ ______ _____
837 2,444 3,281
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 34 516
2-4 a.m. 7 44 91
4-6 a.m. 6 45 121
6-8 a.m. 60 146 1,634
8-10 a.m. 508 1,069 8,468
10-12 a.m. 778 1,522 12,273
12-2 p.m. 609 1,371 9,892
2-4 p.m. 833 2,046 16,257
4-6 p.m. 337 1,035 8,645
6-8 p.m. 86 279 2,934
8-10 p.m. 31 84 954
10-12 p.m. 17 75 735
__________ __________ __________ _________________
Total: 3,281 7,750 62,520
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,329 1,331 2,660
Davis 156 16 172
Irvine 209 0 209
Los Angeles 11 618 629
Riverside 84 7 91
San Diego 112 67 179
San Francisco 18 0 18
Santa Barbara 449 121 570
Santa Cruz 38 34 72
Other - UC 0 160 160
Other-Network UC n/a 2,990 2,990
_______ ______ _____
2,406 5,344 7,750
Number of FIND commands by database
RLIN Bibliographic File 6,165
Anthropological Literature 705
Avery Index to Architectural Per. 386
History of Science & Technology 29
Index to Foreign Legal Periodical 6
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 235
English Short Title Catalogue 224
Total number of FIND commands 7,750
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,213 11,299 18,512
Davis 1,883 93 1,976
Irvine 1,799 0 1,799
Los Angeles 29 7,507 7,536
Riverside 679 20 699
San Diego 1,376 1,310 2,686
San Francisco 291 0 291
Santa Barbara 5,704 922 6,626
Santa Cruz 255 281 536
Other - UC 0 918 918
Other-Network UC n/a 20,941 20,941
_______ ______ _____
19,229 43,291 62,520
Number of Records Displayed by database
RLIN Bibliographic File 50,985
Anthropological Literature 4,810
Avery Index to Architectural Per. 2,909
History of Science & Technology 131
Index to Foreign Legal Periodical 65
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,906
English Short Title Catalogue 1,714
Total number of Records Displayed 62,520
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 2,686 81.9%
Anthropological Literature 299 9.1%
Avery Index to Architectural Per. 119 3.6%
History of Science & Technology 27 0.8%
Index to Foreign Legal Periodical 4 0.1%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 95 2.9%
English Short Title Catalogue 51 1.6%
Percent of searches done in the RCAT database 79.5%
Percent of searches done in the ANTH database 9.1%
Percent of searches done in the ARCH database 5.0%
Percent of searches done in the HSCI database 0.4%
Percent of searches done in the FLEG database 0.1%
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 3.0%
Percent of searches done in the ESTC database 2.9%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 4.7
Standard deviation in seconds 17.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 14:45
Average session length (minutes:seconds) 20:12
Longest session recorded (minutes:seconds) 195:33
Average number of searches completed per session 2.3
Retrievals per search - median 3.0
Retrievals per search - average 162.5
Retrievals per search - standard deviation 2748.5
Percent of searches completed with 0 results 26.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,718 30.1%
DISPLAY (excluding automatic displays) 7,889 41.6%
HELP 43 0.2%
EXPLAIN 67 0.4%
SET/RESET 1,783 9.4%
SHOW 42 0.2%
ADD ON (AND, OR, AND NOT) 447 2.4%
LOGON or LOGOFF 2,380 12.5%
COMMENT 0 0.0%
USE 7 0.0%
OTHER 594 3.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 7.3%
SHORT 48.7%
LONG 10.7%
TAGS 0.0%
FIELDS 6.4%
PERIODICALS 14.5%
COMMENTS 0.0%
Other 12.4%
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 837 13.8% 166 19.8% 12 93.4 390.4
EXACT AUTHOR 15 0.2% 2 13.3% 116 95.3 40.0
CORPORATE AUTHOR 78 1.3% 27 34.6% 5 134.4 466.3
EXACT CORPORATE 1 0.0% 0 0.0% 54 54.0 0.0
TITLE WORD 2,438 40.2% 633 26.0% 8 407.9 4882.3
EXACT TITLE/SERI 593 9.8% 171 28.8% 5 266.8 2422.7
EXACT JOURNAL 7 0.1% 3 42.9% 12 9.8 6.7
SUBJECT 112 1.8% 30 26.8% 39 426.8 1878.7
EXACT SUBJECT 3 0.0% 2 66.7% 4 4.0 0.0
SERIES 117 1.9% 43 36.8% 28 202.5 935.7
CONFERENCE 1 0.0% 0 0.0% 22 22.0 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 19 0.3% 8 42.1% 11 20.6 30.2
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 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 6 0.1% 3 50.0% 1 1.0 0.0
PLACE OF PUBL. 2 0.0% 1 50.0% 2 2.0 0.0
UNIFORM TITLE 1 0.0% 0 0.0% 1 1.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 655 10.8% 207 31.6% 4 21.0 94.9
EXACT PE 96 1.6% 17 17.7% 6 49.9 188.2
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 1,082 17.8% 326 30.1% 2 6.2 19.4
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 387 6.8% 103 26.6% 5 14.4 29.7
Single 5,278 93.2% 1,428 27.1% 6 254.4 3458.9
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 4:26
Average session length (minutes:seconds) 10:58
Longest session recorded (minutes:seconds) 407:29
Average number of searches completed per session 2.4
Retrievals per search - median 3.0
Retrievals per search - average 284.5
Retrievals per search - standard deviation 6078.0
Percent of searches completed with 0 results 32.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 696 32.5%
DISPLAY (excluding automatic displays) 577 26.9%
HELP 138 6.4%
EXPLAIN 125 5.8%
SET/RESET 100 4.7%
SHOW 33 1.5%
ADD ON (AND, OR, AND NOT) 9 0.4%
LOGON or LOGOFF 393 18.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 71 3.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.0%
SHORT 73.5%
LONG 15.4%
TAGS 0.8%
FIELDS 2.0%
PERIODICALS 5.4%
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 176 23.5% 43 24.4% 16 30.3 67.8
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 232 30.9% 87 37.5% 12 73.2 190.8
EXACT TITLE 21 2.8% 9 42.9% 1 20.6 64.7
SUBJECT 236 31.5% 72 30.5% 13 1078.4 12591.0
EXACT SUBJECT 13 1.7% 5 38.5% 223 168.9 133.9
EXACT JOURNAL 19 2.5% 12 63.2% 255 1022.7 1726.5
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 21 2.8% 9 42.9% 3 13.4 25.7
EXACT PE 15 2.0% 7 46.7% 1 1.1 0.4
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 17 2.3% 8 47.1% 3 25.4 47.9
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 54 7.8% 31 57.4% 2 6.2 10.6
Single 642 92.2% 190 29.6% 12 443.3 7589.1
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 5:00
Average session length (minutes:seconds) 9:11
Longest session recorded (minutes:seconds) 64:25
Average number of searches completed per session 3.2
Retrievals per search - median 4.0
Retrievals per search - average 97.4
Retrievals per search - standard deviation 485.7
Percent of searches completed with 0 results 30.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 365 36.8%
DISPLAY (excluding automatic displays) 316 31.9%
HELP 24 2.4%
EXPLAIN 42 4.2%
SET/RESET 51 5.1%
SHOW 6 0.6%
ADD ON (AND, OR, AND NOT) 21 2.1%
LOGON or LOGOFF 132 13.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 34 3.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.0%
SHORT 79.8%
LONG 7.2%
TAGS 0.0%
FIELDS 8.0%
PERIODICALS 3.0%
COMMENTS 0.0%
Other 1.0%
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 39 10.4% 8 20.5% 8 36.2 62.4
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 87 23.1% 39 44.8% 5 38.6 97.7
EXACT TITLE 4 1.1% 2 50.0% 4 3.5 3.5
SUBJECT 214 56.9% 62 29.0% 21 164.8 641.9
EXACT SUBJECT 4 1.1% 2 50.0% 90 90.0 108.9
EXACT JOURNAL 9 2.4% 3 33.3% 298 1174.3 1917.5
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 8 2.1% 1 12.5% 27 62.0 48.4
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 8 2.1% 0 0.0% 42 141.6 265.2
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 3 0.8% 1 33.3% 146 146.0 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 11 3.0% 3 27.3% 27 54.5 49.5
Single 354 97.0% 112 31.6% 12 149.8 607.5
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 3:01
Average session length (minutes:seconds) 5:58
Longest session recorded (minutes:seconds) 23:26
Average number of searches completed per session 1.1
Retrievals per search - median 5.0
Retrievals per search - average 462.0
Retrievals per search - standard deviation 1680.1
Percent of searches completed with 0 results 37.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 28 22.0%
DISPLAY (excluding automatic displays) 18 14.2%
HELP 8 6.3%
EXPLAIN 15 11.8%
SET/RESET 6 4.7%
SHOW 1 0.8%
ADD ON (AND, OR, AND NOT) 1 0.8%
LOGON or LOGOFF 40 31.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 10 7.9%
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%
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 5 17.9% 2 40.0% 8 7.7 6.5
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 11 39.3% 4 36.4% 8 25.0 32.6
EXACT TITLE 1 3.6% 0 0.0% 2 2.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 10 35.7% 4 40.0% 127 2198.3 3353.3
EXACT SUBJECT 1 3.6% 1 100% 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 0 0.0% 0 0.0% 0 0.0 0.0
Single 28 100% 11 39.3% 9 787.6 2160.5
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 2:43
Average session length (minutes:seconds) 6:12
Longest session recorded (minutes:seconds) 18:53
Average number of searches completed per session 1.5
Retrievals per search - median 4.0
Retrievals per search - average 11.5
Retrievals per search - standard deviation 17.5
Percent of searches completed with 0 results 33.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6 26.1%
DISPLAY (excluding automatic displays) 4 17.4%
HELP 2 8.7%
EXPLAIN 3 13.0%
SET/RESET 0 0.0%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 8 34.8%
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 0 0.0% 0 0.0% 0 0.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 1 16.7% 0 0.0% 6 6.0 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 5 83.3% 2 40.0% 16 21.0 21.9
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 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 6 100% 2 33.3% 11 17.3 19.4
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 7:30
Average session length (minutes:seconds) 10:24
Longest session recorded (minutes:seconds) 56:14
Average number of searches completed per session 2.5
Retrievals per search - median 3.0
Retrievals per search - average 102.4
Retrievals per search - standard deviation 796.7
Percent of searches completed with 0 results 35.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 230 32.9%
DISPLAY (excluding automatic displays) 174 24.9%
HELP 46 6.6%
EXPLAIN 43 6.2%
SET/RESET 23 3.3%
SHOW 6 0.9%
ADD ON (AND, OR, AND NOT) 5 0.7%
LOGON or LOGOFF 145 20.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 26 3.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
SHORT 58.7%
LONG 32.4%
TAGS 0.0%
FIELDS 0.9%
PERIODICALS 0.9%
COMMENTS 0.0%
Other 3.3%
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 37 16.0% 12 32.4% 10 22.3 29.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 3 1.3% 2 66.7% 1 1.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 34 14.7% 10 29.4% 5 10.2 15.0
EXACT TITLE 2 0.9% 1 50.0% 2 2.0 0.0
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 143 61.9% 52 36.4% 16 244.7 1269.6
EXACT SUBJECT 4 1.7% 3 75.0% 6 6.0 0.0
EXACT JOURNAL 6 2.6% 0 0.0% 78 163.0 234.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 1 0.4% 0 0.0% 3 3.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1 0.4% 0 0.0% 2 2.0 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 0.4% 0 0.0% 3 3.0 0.0
Single 229 99.6% 80 34.9% 11 161.4 997.0
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 12:01
Average session length (minutes:seconds) 12:04
Longest session recorded (minutes:seconds) 36:25
Average number of searches completed per session 4.4
Retrievals per search - median 2.0
Retrievals per search - average 61.1
Retrievals per search - standard deviation 421.8
Percent of searches completed with 0 results 18.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 223 33.1%
DISPLAY (excluding automatic displays) 334 49.6%
HELP 4 0.6%
EXPLAIN 7 1.0%
SET/RESET 4 0.6%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 0.1%
LOGON or LOGOFF 94 13.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 7 1.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.5%
SHORT 43.7%
LONG 54.5%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.3%
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 2 0.7% 1 50.0% 1,813 1813.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 111 37.9% 16 14.4% 5 16.1 49.5
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 114 38.9% 27 23.7% 2 19.0 54.5
EXACT TITLE 0 0.0% 0 0.0% 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 1 0.3% 0 0.0% 34 34.0 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 57 19.5% 11 19.3% 1 6.1 11.7
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 4 1.4% 1 25.0% 4,162 2890.0 2411.3
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 4 1.4% 1 25.0% 4,162 2854.3 2473.0
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 69 30.9% 15 21.7% 2 163.9 815.3
Single 154 69.1% 26 16.9% 6 37.8 169.5
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 9.7%
Ten most frequent errors:
1. NS command - no next screen 24.2%
2. First word of command is invalid 22.4%
3. FIND command with invalid index name 9.9%
4. Z39.50 host unable to process search 6.9%
5. DISPLAY command contains invalid word 3.1%
6. Search term missing from search command 2.0%
7. Index invalid in current database 1.7%
8. PS command - no previous screen 1.5%
9. DISPLAY command - no FIND results 1.3%
10. Z39.50 host cannot process command 1.0%
11. All others 25.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 28.8%
2. GUIDE (Z39.50 A&I DBS) 15.2%
3. FIND (Z39.50 DBS) 8.3%
4. INDEXES (RCAT DB) 6.6%
5. COMMANDS (Z39.50 DBS) 4.3%
6. Unrecognized term 4.0%
7. LOCATE (Z39.50 DBS) 3.6%
8. FORM (RCAT DB) 2.6%
9. INDEXES (ANTH DB) 2.6%
10. GUIDE (Z39.50 non-A&I DBS) 2.3%
11. All others 21.5%
Ten most frequent HELP situations:
1. First word of command is invalid 21.5%
2. Help requested from SET DB command 18.7%
3. FIND command with invalid index name 10.9%
4. DISPLAY command-complete in one screen 7.6%
5. FIND command with zero results 7.1%
6. DISPLAY command-first of >1 screen 5.6%
7. DISPLAY command - middle of >1 screen 5.6%
8. FIND command retrieves >1 book 3.4%
9. DISPLAY command - last of >1 screen 2.5%
10. FIND command retrieves 1 book 2.3%
11. All others 14.8%
Ten most frequent SHOW requests:
1. HISTORY 60.2%
2. SEARCH 31.8%
3. SETTINGS (Z39.50 DBS) 2.3%
4. SYSTEM NEWS 2.3%
5. GLOSSARY 1.1%
6. LIBRARY SETTINGS 1.1%
7. LOADING STATISTICS 1.1%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)