MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 10/01/99 through 10/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 620 820 1,440
Davis 173 3 176
Irvine 117 0 117
Los Angeles 196 322 518
Riverside 79 2 81
San Diego 34 24 58
San Francisco 38 0 38
Santa Barbara 222 78 300
Santa Cruz 143 62 205
Other - UC 4 59 63
Other-Network UC n/a 245 245
_______ ______ _____
1,626 1,615 3,241
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 22 118 721
2-4 a.m. 5 18 36
4-6 a.m. 17 81 363
6-8 a.m. 27 93 1,091
8-10 a.m. 240 621 5,550
10-12 a.m. 560 1,559 13,140
12-2 p.m. 620 1,919 26,719
2-4 p.m. 702 2,276 19,663
4-6 p.m. 540 1,910 15,183
6-8 p.m. 246 1,020 7,608
8-10 p.m. 198 511 4,119
10-12 p.m. 64 217 1,565
__________ __________ __________ _________________
Total: 3,241 10,343 95,758
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,510 2,509 5,019
Davis 295 4 299
Irvine 345 0 345
Los Angeles 1,191 906 2,097
Riverside 188 3 191
San Diego 86 36 122
San Francisco 126 0 126
Santa Barbara 621 267 888
Santa Cruz 389 197 586
Other - UC 5 179 184
Other-Network UC n/a 486 486
_______ ______ _____
5,756 4,587 10,343
Number of FIND commands by database
RLIN Bibliographic File 4,067
Anthropological Literature 1,931
Avery Index to Architectural Per. 2,535
History of Science & Technology 242
Index to Foreign Legal Periodical 80
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 970
English Short Title Catalogue 518
Total number of FIND commands 10,343
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 22,647 29,779 52,426
Davis 2,639 10 2,649
Irvine 1,894 0 1,894
Los Angeles 7,135 7,833 14,968
Riverside 1,941 3 1,944
San Diego 640 440 1,080
San Francisco 1,769 0 1,769
Santa Barbara 4,925 3,049 7,974
Santa Cruz 4,585 1,965 6,550
Other - UC 77 1,427 1,504
Other-Network UC n/a 3,000 3,000
_______ ______ _____
48,252 47,506 95,758
Number of Records Displayed by database
RLIN Bibliographic File 31,843
Anthropological Literature 27,846
Avery Index to Architectural Per. 22,776
History of Science & Technology 1,730
Index to Foreign Legal Periodical 324
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 8,085
English Short Title Catalogue 3,154
Total number of Records Displayed 95,758
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,334 41.2%
Anthropological Literature 714 22.0%
Avery Index to Architectural Per. 571 17.6%
History of Science & Technology 70 2.2%
Index to Foreign Legal Periodical 32 1.0%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 372 11.5%
English Short Title Catalogue 148 4.6%
Percent of searches done in the RCAT database 39.3%
Percent of searches done in the ANTH database 18.7%
Percent of searches done in the ARCH database 24.5%
Percent of searches done in the HSCI database 2.3%
Percent of searches done in the FLEG database 0.8%
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 9.4%
Percent of searches done in the ESTC database 5.0%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.1
Standard deviation in seconds 9.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.4
Standard deviation in seconds 2.3
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 11:19
Average session length (minutes:seconds) 14:08
Longest session recorded (minutes:seconds) 111:48
Average number of searches completed per session 3.0
Retrievals per search - median 3.0
Retrievals per search - average 131.9
Retrievals per search - standard deviation 1507.6
Percent of searches completed with 0 results 25.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,845 33.0%
DISPLAY (excluding automatic displays) 4,815 41.4%
HELP 96 0.8%
EXPLAIN 157 1.3%
SET/RESET 840 7.2%
SHOW 52 0.4%
ADD ON (AND, OR, AND NOT) 222 1.9%
LOGON or LOGOFF 1,220 10.5%
COMMENT 0 0.0%
USE 2 0.0%
OTHER 391 3.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.6%
SHORT 54.3%
LONG 11.3%
TAGS 0.1%
FIELDS 2.0%
PERIODICALS 2.6%
COMMENTS 0.0%
Other 24.0%
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 1,038 24.5% 267 25.7% 17 126.1 563.6
EXACT AUTHOR 10 0.2% 3 30.0% 11 15.1 15.8
CORPORATE AUTHOR 36 0.8% 12 33.3% 17 520.2 1219.0
EXACT CORPORATE 5 0.1% 2 40.0% 4 12.3 17.1
TITLE WORD 1,300 30.7% 400 30.8% 6 325.5 2805.6
EXACT TITLE/SERI 586 13.8% 181 30.9% 3 79.5 528.7
EXACT JOURNAL 3 0.1% 1 33.3% 37 37.0 45.3
SUBJECT 118 2.8% 36 30.5% 29 1099.0 4374.0
EXACT SUBJECT 8 0.2% 4 50.0% 3 2.8 2.1
SERIES 48 1.1% 21 43.8% 24 44.9 54.2
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 0.2% 1 14.3% 28 78.8 103.7
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 0.0% 1 50.0% 1 1.0 0.0
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 2 0.0% 2 100% 0 0.0 0.0
PLACE OF PUBL. 6 0.1% 2 33.3% 7 13.5 17.9
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 113 2.7% 42 37.2% 5 71.6 211.1
EXACT PE 25 0.6% 9 36.0% 5 10.6 13.9
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 929 21.9% 128 13.8% 3 6.7 12.8
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 399 10.5% 131 32.8% 3 28.7 125.3
Single 3,411 89.5% 840 24.6% 6 202.4 1883.8
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 5:07
Average session length (minutes:seconds) 9:53
Longest session recorded (minutes:seconds) 107:50
Average number of searches completed per session 2.7
Retrievals per search - median 2.0
Retrievals per search - average 213.3
Retrievals per search - standard deviation 3679.3
Percent of searches completed with 0 results 36.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,898 36.3%
DISPLAY (excluding automatic displays) 1,201 23.0%
HELP 313 6.0%
EXPLAIN 332 6.4%
SET/RESET 240 4.6%
SHOW 22 0.4%
ADD ON (AND, OR, AND NOT) 33 0.6%
LOGON or LOGOFF 963 18.4%
COMMENT 1 0.0%
USE 1 0.0%
OTHER 219 4.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 83.1%
LONG 6.1%
TAGS 2.0%
FIELDS 1.8%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 3.0%
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 582 29.5% 149 25.6% 11 42.4 107.5
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 518 26.3% 214 41.3% 8 147.3 724.0
EXACT TITLE 44 2.2% 28 63.6% 2 21.4 35.0
SUBJECT 720 36.5% 274 38.1% 19 749.9 7600.8
EXACT SUBJECT 38 1.9% 24 63.2% 110 473.4 1023.6
EXACT JOURNAL 21 1.1% 13 61.9% 2,161 2538.4 2541.8
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 13 0.7% 7 53.8% 13 17.8 21.2
EXACT PE 12 0.6% 6 50.0% 2 3.0 2.8
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 22 1.1% 8 36.4% 6 6.4 4.3
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 75 4.0% 27 36.0% 4 302.9 1402.7
Single 1,819 96.0% 668 36.7% 14 344.1 4747.0
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 9:04
Average session length (minutes:seconds) 11:57
Longest session recorded (minutes:seconds) 82:39
Average number of searches completed per session 4.4
Retrievals per search - median 3.0
Retrievals per search - average 144.6
Retrievals per search - standard deviation 1286.6
Percent of searches completed with 0 results 36.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,486 37.4%
DISPLAY (excluding automatic displays) 2,538 38.2%
HELP 165 2.5%
EXPLAIN 114 1.7%
SET/RESET 173 2.6%
SHOW 25 0.4%
ADD ON (AND, OR, AND NOT) 49 0.7%
LOGON or LOGOFF 831 12.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 266 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.7%
SHORT 88.8%
LONG 3.8%
TAGS 0.0%
FIELDS 1.4%
PERIODICALS 4.5%
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 279 10.9% 132 47.3% 7 22.2 46.6
EXACT AUTHOR 1 0.0% 0 0.0% 15 15.0 0.0
CORPORATE AUTHOR 9 0.4% 9 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 589 23.0% 221 37.5% 8 75.9 246.4
EXACT TITLE 27 1.1% 15 55.6% 9 20.8 29.1
SUBJECT 1,405 54.8% 475 33.8% 18 269.5 1574.4
EXACT SUBJECT 23 0.9% 16 69.6% 97 189.9 218.9
EXACT JOURNAL 84 3.3% 39 46.4% 69 1652.2 6244.7
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 30 1.2% 8 26.7% 29 462.0 1573.4
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 32 1.2% 11 34.4% 59 271.3 567.7
EXACT PE 64 2.5% 9 14.1% 5 17.1 40.3
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 23 0.9% 8 34.8% 13 33.3 39.0
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 2.8% 26 37.7% 14 308.6 1189.1
Single 2,413 97.2% 884 36.6% 14 227.8 1636.6
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 3:32
Average session length (minutes:seconds) 6:56
Longest session recorded (minutes:seconds) 24:26
Average number of searches completed per session 3.5
Retrievals per search - median 0.0
Retrievals per search - average 104.0
Retrievals per search - standard deviation 939.6
Percent of searches completed with 0 results 50.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 241 39.9%
DISPLAY (excluding automatic displays) 147 24.3%
HELP 34 5.6%
EXPLAIN 31 5.1%
SET/RESET 13 2.2%
SHOW 4 0.7%
ADD ON (AND, OR, AND NOT) 1 0.2%
LOGON or LOGOFF 111 18.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 22 3.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.7%
SHORT 85.8%
LONG 3.4%
TAGS 0.0%
FIELDS 1.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 4.0%
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 57 23.4% 24 42.1% 16 27.2 31.9
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 71 29.1% 27 38.0% 12 64.0 160.6
EXACT TITLE 1 0.4% 0 0.0% 1 1.0 0.0
EXACT JOURNAL 1 0.4% 0 0.0% 2 2.0 0.0
SUBJECT 110 45.1% 72 65.5% 56 556.6 2337.5
EXACT SUBJECT 4 1.6% 3 75.0% 292 292.0 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 3 1.2% 3 100% 0 0.0 0.0
Single 238 98.8% 120 50.4% 16 213.2 1339.7
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 3:54
Average session length (minutes:seconds) 7:44
Longest session recorded (minutes:seconds) 68:07
Average number of searches completed per session 2.5
Retrievals per search - median 0.0
Retrievals per search - average 44.7
Retrievals per search - standard deviation 253.1
Percent of searches completed with 0 results 62.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 80 37.7%
DISPLAY (excluding automatic displays) 27 12.7%
HELP 18 8.5%
EXPLAIN 16 7.5%
SET/RESET 2 0.9%
SHOW 1 0.5%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 56 26.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 12 5.7%
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 8 9.9% 6 75.0% 23 22.5 9.2
EXACT AUTHOR 1 1.2% 1 100% 0 0.0 0.0
TITLE WORD 27 33.3% 17 63.0% 14 37.2 58.1
EXACT TITLE 1 1.2% 1 100% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 44 54.3% 26 59.1% 15 175.3 521.3
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 1 1.2% 1 100% 0 0.0 0.0
Single 79 98.7% 49 62.0% 16 119.1 406.6
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 4:47
Average session length (minutes:seconds) 8:18
Longest session recorded (minutes:seconds) 58:31
Average number of searches completed per session 2.6
Retrievals per search - median 2.0
Retrievals per search - average 90.3
Retrievals per search - standard deviation 373.3
Percent of searches completed with 0 results 36.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 963 30.9%
DISPLAY (excluding automatic displays) 824 26.4%
HELP 253 8.1%
EXPLAIN 237 7.6%
SET/RESET 103 3.3%
SHOW 43 1.4%
ADD ON (AND, OR, AND NOT) 7 0.2%
LOGON or LOGOFF 550 17.6%
COMMENT 1 0.0%
USE 2 0.1%
OTHER 136 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.3%
SHORT 84.0%
LONG 8.2%
TAGS 0.4%
FIELDS 1.3%
PERIODICALS 3.6%
COMMENTS 0.0%
Other 2.2%
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 151 15.6% 50 33.1% 12 40.9 61.1
EXACT AUTHOR 4 0.4% 2 50.0% 7 6.5 4.9
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 192 19.8% 67 34.9% 7 22.7 57.6
EXACT TITLE 21 2.2% 12 57.1% 1 1.3 0.5
ABSTRACT 4 0.4% 2 50.0% 3 3.0 2.8
SUBJECT 530 54.6% 191 36.0% 26 229.3 603.6
EXACT SUBJECT 26 2.7% 13 50.0% 28 25.6 17.9
EXACT JOURNAL 7 0.7% 6 85.7% 528 528.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 2 0.2% 2 100% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 27 2.8% 5 18.5% 5 53.5 120.6
EXACT PE 2 0.2% 0 0.0% 279 279.0 0.0
RPE 1 0.1% 0 0.0% 1 1.0 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 4 0.4% 3 75.0% 43 43.0 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 0.9% 4 44.4% 1 3.2 4.4
Single 953 99.1% 345 36.2% 17 143.7 463.2
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 8:23
Average session length (minutes:seconds) 14:39
Longest session recorded (minutes:seconds) 151:14
Average number of searches completed per session 3.5
Retrievals per search - median 4.0
Retrievals per search - average 1045.2
Retrievals per search - standard deviation 15357
Percent of searches completed with 0 results 28.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 454 35.4%
DISPLAY (excluding automatic displays) 328 25.6%
HELP 45 3.5%
EXPLAIN 57 4.4%
SET/RESET 98 7.6%
SHOW 9 0.7%
ADD ON (AND, OR, AND NOT) 64 5.0%
LOGON or LOGOFF 203 15.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 24 1.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.6%
SHORT 66.4%
LONG 23.5%
TAGS 0.0%
FIELDS 0.2%
PERIODICALS 1.2%
COMMENTS 0.0%
Other 3.0%
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 53 9.8% 23 43.4% 9 226.7 889.5
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 124 23.0% 42 33.9% 8 102.9 273.1
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 255 47.2% 76 29.8% 15 361.4 782.1
EXACT TITLE 41 7.6% 17 41.5% 2 22.9 56.5
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 21 3.9% 6 28.6% 51 575.5 1519.7
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 2 0.4% 0 0.0% 4 4.0 4.2
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 0.2% 0 0.0% 3,156 3156.0 0.0
INDEXED BY 2 0.4% 0 0.0% 3 2.5 0.7
NOTES 1 0.2% 0 0.0% 655 655.0 0.0
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 36 6.7% 14 38.9% 14 19845.1 73472.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 2 0.4% 1 50.0% 1 1.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 2 0.4% 0 0.0% 12 11.5 13.4
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 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 80 17.7% 28 35.0% 6 26.3 83.2
Single 373 82.3% 117 31.4% 20 2057.9 21797.1
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 14.2%
Ten most frequent errors:
1. First word of command is invalid 34.5%
2. NS command - no next screen 18.4%
3. FIND command with invalid index name 11.8%
4. Index invalid in current database 4.6%
5. DISPLAY command contains invalid word 3.4%
6. PS command - no previous screen 2.8%
7. Valid command at an inappropriate time 2.7%
8. Search term missing from search command 1.8%
9. Command contains escape or arrow key 1.3%
10. 1188 0.8%
11. All others 17.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 22.9%
2. GUIDE (Z39.50 A&I DBS) 19.7%
3. FIND (Z39.50 DBS) 6.4%
4. COMMANDS (Z39.50 DBS) 5.7%
5. INDEXES (ANTH DB) 5.1%
6. Unrecognized term 4.8%
7. GUIDE (Z39.50 non-A&I DBS) 4.6%
8. INDEXES (RCAT DB) 4.2%
9. LOCATE (Z39.50 DBS) 2.9%
10. INDEXES (ESTC DB) 1.9%
11. All others 21.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.1%
2. First word of command is invalid 19.6%
3. FIND command with invalid index name 10.0%
4. DISPLAY command-complete in one screen 7.7%
5. FIND command with zero results 6.3%
6. F/BR with index invalid in current DB 5.4%
7. DISPLAY command - middle of >1 screen 4.6%
8. DISPLAY command-first of >1 screen 4.4%
9. FIND command retrieves 1 book 2.8%
10. MELVYL system could not process command 1.8%
11. All others 14.2%
Ten most frequent SHOW requests:
1. HISTORY 42.3%
2. SEARCH 24.4%
3. FORM NAMES (RCAT DB) 9.6%
4. Z39.50 NEWS 5.8%
5. SYSTEM NEWS 4.5%
6. GLOSSARY 3.2%
7. SETTINGS (Z39.50 DBS) 1.9%
8. LIBRARY NEWS 1.3%
9. PAGESIZE 1.3%
10. DATABASES 1.3%
11. All others 4.5%