MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 04/01/99 through 04/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 964 1,005 1,969
Davis 317 5 322
Irvine 190 0 190
Los Angeles 119 361 480
Riverside 157 2 159
San Diego 53 104 157
San Francisco 28 1 29
Santa Barbara 331 91 422
Santa Cruz 196 80 276
Other - UC 25 96 121
Other-Network UC n/a 167 167
_______ ______ _____
2,380 1,912 4,292
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 33 87 793
2-4 a.m. 9 14 56
4-6 a.m. 5 15 31
6-8 a.m. 30 49 1,224
8-10 a.m. 351 901 8,276
10-12 a.m. 793 2,358 23,482
12-2 p.m. 838 2,806 30,021
2-4 p.m. 934 2,821 28,733
4-6 p.m. 678 2,184 20,350
6-8 p.m. 306 936 13,666
8-10 p.m. 217 809 8,914
10-12 p.m. 98 273 2,194
__________ __________ __________ _________________
Total: 4,292 13,253 137,740
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,675 2,959 6,634
Davis 917 3 920
Irvine 508 0 508
Los Angeles 384 1,029 1,413
Riverside 412 8 420
San Diego 173 178 351
San Francisco 66 1 67
Santa Barbara 1,081 275 1,356
Santa Cruz 662 248 910
Other - UC 36 268 304
Other-Network UC n/a 370 370
_______ ______ _____
7,914 5,339 13,253
Number of FIND commands by database
RLIN Bibliographic File 3,782
Anthropological Literature 3,699
Avery Index to Architectural Per. 3,431
History of Science & Technology 303
Index to Foreign Legal Periodical 110
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,336
English Short Title Catalogue 592
Total number of FIND commands 13,253
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 38,194 29,281 67,475
Davis 6,882 5 6,887
Irvine 7,345 0 7,345
Los Angeles 3,428 12,906 16,334
Riverside 4,930 246 5,176
San Diego 1,120 1,731 2,851
San Francisco 1,060 0 1,060
Santa Barbara 12,454 2,677 15,131
Santa Cruz 5,665 1,807 7,472
Other - UC 202 3,773 3,975
Other-Network UC n/a 4,034 4,034
_______ ______ _____
81,280 56,460 137,740
Number of Records Displayed by database
RLIN Bibliographic File 38,113
Anthropological Literature 35,859
Avery Index to Architectural Per. 36,520
History of Science & Technology 2,271
Index to Foreign Legal Periodical 554
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 16,564
English Short Title Catalogue 7,859
Total number of Records Displayed 137,740
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,445 33.7%
Anthropological Literature 1,160 27.0%
Avery Index to Architectural Per. 891 20.8%
History of Science & Technology 133 3.1%
Index to Foreign Legal Periodical 41 1.0%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 463 10.8%
English Short Title Catalogue 159 3.7%
Percent of searches done in the RCAT database 28.5%
Percent of searches done in the ANTH database 27.9%
Percent of searches done in the ARCH database 25.9%
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 10.1%
Percent of searches done in the ESTC database 4.5%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.9
Standard deviation in seconds 8.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 1.0
Standard deviation in seconds 2.6
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 9:22
Average session length (minutes:seconds) 13:47
Longest session recorded (minutes:seconds) 366:57
Average number of searches completed per session 2.6
Retrievals per search - median 3.0
Retrievals per search - average 191.3
Retrievals per search - standard deviation 2040.0
Percent of searches completed with 0 results 31.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,540 33.3%
DISPLAY (excluding automatic displays) 3,844 36.1%
HELP 146 1.4%
EXPLAIN 174 1.6%
SET/RESET 914 8.6%
SHOW 37 0.3%
ADD ON (AND, OR, AND NOT) 242 2.3%
LOGON or LOGOFF 1,274 12.0%
COMMENT 0 0.0%
USE 29 0.3%
OTHER 443 4.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.3%
SHORT 57.8%
LONG 16.2%
TAGS 0.3%
FIELDS 3.5%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 8.2%
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 1,203 31.2% 322 26.8% 17 163.9 658.8
EXACT AUTHOR 14 0.4% 4 28.6% 46 2621.2 7772.3
CORPORATE AUTHOR 57 1.5% 23 40.3% 10 67.8 156.7
EXACT CORPORATE 3 0.1% 1 33.3% 386 385.5 188.8
TITLE WORD 1,439 37.4% 489 34.0% 6 405.1 3525.8
EXACT TITLE/SERI 569 14.8% 228 40.1% 5 143.5 1236.6
EXACT JOURNAL 6 0.2% 4 66.7% 3 2.5 0.7
SUBJECT 181 4.7% 37 20.4% 21 414.1 1716.1
EXACT SUBJECT 5 0.1% 1 20.0% 2 10583.8 21164.8
SERIES 34 0.9% 13 38.2% 17 40.1 59.1
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 0.3% 1 10.0% 32 44.1 45.5
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 32 0.8% 4 12.5% 1 1.0 0.0
PLACE OF PUBL. 1 0.0% 0 0.0% 7 7.0 0.0
UNIFORM TITLE 2 0.1% 1 50.0% 226 226.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 67 1.7% 24 35.8% 4 37.7 114.6
EXACT PE 11 0.3% 3 27.3% 4 5.4 5.5
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 216 5.6% 77 35.6% 2 16.5 54.6
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 342 9.7% 118 34.5% 5 36.4 159.1
Single 3,167 90.3% 1,002 31.6% 11 322.7 2676.4
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 5:45
Average session length (minutes:seconds) 10:16
Longest session recorded (minutes:seconds) 130:34
Average number of searches completed per session 3.2
Retrievals per search - median 3.0
Retrievals per search - average 245.7
Retrievals per search - standard deviation 1773.6
Percent of searches completed with 0 results 35.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,593 38.5%
DISPLAY (excluding automatic displays) 2,249 24.1%
HELP 475 5.1%
EXPLAIN 552 5.9%
SET/RESET 385 4.1%
SHOW 44 0.5%
ADD ON (AND, OR, AND NOT) 106 1.1%
LOGON or LOGOFF 1,556 16.7%
COMMENT 0 0.0%
USE 2 0.0%
OTHER 380 4.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 83.9%
LONG 6.6%
TAGS 0.3%
FIELDS 1.4%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 3.1%
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 905 24.6% 231 25.5% 16 45.1 144.6
EXACT AUTHOR 2 0.1% 2 100% 0 0.0 0.0
TITLE WORD 1,043 28.4% 373 35.8% 9 95.7 339.2
EXACT TITLE 81 2.2% 52 64.2% 2 119.9 358.4
SUBJECT 1,465 39.8% 575 39.2% 34 878.8 3518.6
EXACT SUBJECT 52 1.4% 29 55.8% 27 422.3 534.2
EXACT JOURNAL 26 0.7% 11 42.3% 274 596.9 1150.1
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 61 1.7% 15 24.6% 7 154.1 342.8
EXACT PE 16 0.4% 7 43.8% 2 3.1 2.7
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 26 0.7% 6 23.1% 20 42.7 67.7
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 89 2.5% 40 44.9% 4 16.1 39.9
Single 3,499 97.5% 1,221 34.9% 18 397.4 2245.1
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 7:25
Average session length (minutes:seconds) 11:49
Longest session recorded (minutes:seconds) 298:22
Average number of searches completed per session 3.8
Retrievals per search - median 3.0
Retrievals per search - average 142.1
Retrievals per search - standard deviation 1276.8
Percent of searches completed with 0 results 36.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,356 38.7%
DISPLAY (excluding automatic displays) 2,746 31.6%
HELP 238 2.7%
EXPLAIN 194 2.2%
SET/RESET 573 6.6%
SHOW 73 0.8%
ADD ON (AND, OR, AND NOT) 75 0.9%
LOGON or LOGOFF 966 11.1%
COMMENT 0 0.0%
USE 2 0.0%
OTHER 459 5.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.9%
SHORT 83.2%
LONG 4.9%
TAGS 0.0%
FIELDS 1.3%
PERIODICALS 8.3%
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 323 9.4% 155 48.0% 6 23.5 52.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 5 0.1% 4 80.0% 1 1.0 0.0
EXACT CORPORATE 1 0.0% 1 100% 0 0.0 0.0
TITLE WORD 837 24.3% 353 42.2% 12 66.4 224.6
EXACT TITLE 28 0.8% 12 42.9% 17 30.4 43.4
SUBJECT 1,876 54.5% 626 33.4% 29 262.0 1702.0
EXACT SUBJECT 23 0.7% 17 73.9% 8 63.5 91.0
EXACT JOURNAL 57 1.7% 31 54.4% 191 596.5 902.4
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 14 0.4% 7 50.0% 7 32.7 74.7
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 41 1.2% 2 4.9% 28 94.5 151.4
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 174 5.1% 36 20.7% 32 691.2 3631.6
EXACT PE 42 1.2% 9 21.4% 4 18.2 43.0
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 18 0.5% 5 27.8% 7 50.2 94.1
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 89 2.7% 25 28.1% 15 69.1 129.4
Single 3,260 97.3% 1,207 37.0% 18 229.8 1640.7
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 9:00
Average session length (minutes:seconds) 10:49
Longest session recorded (minutes:seconds) 70:06
Average number of searches completed per session 2.3
Retrievals per search - median 3.0
Retrievals per search - average 87.2
Retrievals per search - standard deviation 347.0
Percent of searches completed with 0 results 36.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 296 28.4%
DISPLAY (excluding automatic displays) 299 28.7%
HELP 53 5.1%
EXPLAIN 90 8.6%
SET/RESET 39 3.7%
SHOW 8 0.8%
ADD ON (AND, OR, AND NOT) 7 0.7%
LOGON or LOGOFF 207 19.9%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 42 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.9%
SHORT 66.9%
LONG 11.1%
TAGS 3.8%
FIELDS 4.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 12.9%
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 66 22.3% 34 51.5% 19 19.8 16.5
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 94 31.8% 27 28.7% 14 54.8 127.8
EXACT TITLE 4 1.4% 0 0.0% 1 1.3 0.5
EXACT JOURNAL 1 0.3% 1 100% 0 0.0 0.0
SUBJECT 113 38.2% 43 38.1% 25 264.0 665.0
EXACT SUBJECT 11 3.7% 3 27.3% 54 261.8 326.8
SERIES 4 1.4% 1 25.0% 188 152.0 62.4
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 1 0.3% 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 2 0.7% 0 0.0% 36 35.5 30.4
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 2 0.7% 1 50.0% 57 57.0 0.0
Single 292 99.3% 108 37.0% 21 137.5 434.7
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 2:31
Average session length (minutes:seconds) 5:42
Longest session recorded (minutes:seconds) 40:16
Average number of searches completed per session 2.7
Retrievals per search - median 0.0
Retrievals per search - average 78.5
Retrievals per search - standard deviation 267.5
Percent of searches completed with 0 results 64.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 107 40.5%
DISPLAY (excluding automatic displays) 37 14.0%
HELP 14 5.3%
EXPLAIN 19 7.2%
SET/RESET 9 3.4%
SHOW 1 0.4%
ADD ON (AND, OR, AND NOT) 3 1.1%
LOGON or LOGOFF 63 23.9%
COMMENT 0 0.0%
USE 1 0.4%
OTHER 10 3.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 74.1%
LONG 18.5%
TAGS 0.0%
FIELDS 1.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 3.7%
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 10 8.4% 8 80.0% 5 4.5 4.9
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 39 32.8% 24 61.5% 5 90.7 167.9
EXACT TITLE 4 3.4% 4 100% 0 0.0 0.0
EXACT JOURNAL 5 4.2% 3 60.0% 659 658.5 789.8
SUBJECT 57 47.9% 39 68.4% 29 325.9 513.2
EXACT SUBJECT 4 3.4% 4 100% 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 13 12.3% 13 100% 0 0.0 0.0
Single 93 87.7% 56 60.2% 8 231.2 422.3
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 5:01
Average session length (minutes:seconds) 9:14
Longest session recorded (minutes:seconds) 123:02
Average number of searches completed per session 2.9
Retrievals per search - median 2.0
Retrievals per search - average 113.5
Retrievals per search - standard deviation 403.3
Percent of searches completed with 0 results 38.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,306 30.7%
DISPLAY (excluding automatic displays) 1,130 26.6%
HELP 327 7.7%
EXPLAIN 353 8.3%
SET/RESET 74 1.7%
SHOW 51 1.2%
ADD ON (AND, OR, AND NOT) 30 0.7%
LOGON or LOGOFF 773 18.2%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 206 4.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 79.5%
LONG 8.1%
TAGS 5.1%
FIELDS 1.2%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 2.9%
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 127 9.6% 52 40.9% 16 37.1 67.6
EXACT AUTHOR 2 0.2% 2 100% 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 282 21.4% 122 43.3% 6 81.4 266.2
EXACT TITLE 38 2.9% 26 68.4% 1 7.5 20.3
ABSTRACT 10 0.8% 2 20.0% 2 2.6 1.3
SUBJECT 786 59.7% 283 36.0% 31 257.1 606.2
EXACT SUBJECT 34 2.6% 20 58.8% 69 204.8 263.8
EXACT JOURNAL 5 0.4% 3 60.0% 18 18.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 3 0.2% 0 0.0% 6 20.7 26.3
LANGUAGE 1 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 24 1.8% 2 8.3% 12 124.2 267.0
EXACT PE 2 0.2% 1 50.0% 31 31.0 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 0.2% 1 33.3% 22 22.0 28.3
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 11 0.8% 1 9.1% 3 7.9 15.2
Single 1,292 99.2% 512 39.6% 17 193.4 512.6
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 9:03
Average session length (minutes:seconds) 11:43
Longest session recorded (minutes:seconds) 90:37
Average number of searches completed per session 3.7
Retrievals per search - median 5.0
Retrievals per search - average 1018.8
Retrievals per search - standard deviation 5890.8
Percent of searches completed with 0 results 31.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 578 32.6%
DISPLAY (excluding automatic displays) 659 37.2%
HELP 60 3.4%
EXPLAIN 110 6.2%
SET/RESET 32 1.8%
SHOW 6 0.3%
ADD ON (AND, OR, AND NOT) 14 0.8%
LOGON or LOGOFF 256 14.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 58 3.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.0%
SHORT 50.2%
LONG 24.3%
TAGS 7.6%
FIELDS 1.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 11.2%
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 70 10.0% 41 58.6% 102 145.8 158.8
EXACT SUBJECT 3 0.4% 2 66.7% 1 1.0 0.0
AUTHOR 103 14.7% 32 31.1% 11 56.3 112.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 5 0.7% 1 20.0% 892 2150.5 3137.1
EXACT CORP. AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 253 36.0% 75 29.6% 9 350.0 1730.7
EXACT TITLE 19 2.7% 10 52.6% 9 22.8 39.1
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 37 5.3% 18 48.6% 75 2526.0 8672.2
PUBLICATION TYPE 14 2.0% 1 7.1% 1,355 5038.7 5585.5
PUBLISHER 22 3.1% 2 9.1% 9 11.5 12.2
IMPRINT YEAR 95 13.5% 30 31.6% 9 72.1 288.6
COUNTRY CODE 9 1.3% 5 55.6% 263 1031.0 1724.8
SHELFMARK 3 0.4% 1 33.3% 33 33.0 45.3
HOLDING LIBRARY 1 0.1% 0 0.0% 2,621 2621.0 0.0
INDEXED BY 8 1.1% 0 0.0% 15,021 31072.8 34644.6
NOTES 0 0.0% 0 0.0% 0 0.0 0.0
PLACE OF PUBL 25 3.6% 1 4.0% 356 2546.0 5794.4
DATE 11 1.6% 1 9.1% 19 1494.1 3388.6
LANGUAGE 24 3.4% 3 12.5% 171 3772.4 6378.1
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 122 21.1% 38 31.1% 9 99.4 422.0
Single 455 78.9% 144 31.6% 26 1902.6 8020.6
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 14.7%
Ten most frequent errors:
1. First word of command is invalid 34.4%
2. NS command - no next screen 16.9%
3. FIND command with invalid index name 11.0%
4. Index invalid in current database 5.8%
5. Valid command at an inappropriate time 3.1%
6. PS command - no previous screen 3.0%
7. DISPLAY command contains invalid word 2.2%
8. Search term missing from search command 1.5%
9. SAVE command issued from a Z39.50 db 1.4%
10. Add-on search with no previous result 1.1%
11. All others 19.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 22.9%
2. GUIDE (Z39.50 A&I DBS) 17.2%
3. FIND (Z39.50 DBS) 6.9%
4. COMMANDS (Z39.50 DBS) 5.7%
5. Unrecognized term 5.5%
6. INDEXES (ANTH DB) 4.6%
7. LOCATE (Z39.50 DBS) 3.1%
8. GUIDE (Z39.50 non-A&I DBS) 2.8%
9. INDEXES (RCAT DB) 2.6%
10. INDEXES (CHI DB) 2.2%
11. All others 26.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.0%
2. First word of command is invalid 16.3%
3. DISPLAY command-complete in one screen 8.4%
4. FIND command with invalid index name 8.4%
5. FIND command with zero results 6.6%
6. DISPLAY command-first of >1 screen 5.8%
7. F/BR with index invalid in current DB 5.8%
8. DISPLAY command - middle of >1 screen 4.2%
9. DISPLAY command - last of >1 screen 2.3%
10. FIND command retrieves 1 book 2.1%
11. All others 15.1%
Ten most frequent SHOW requests:
1. HISTORY 40.0%
2. SEARCH 30.5%
3. GLOSSARY 8.2%
4. SETTINGS (Z39.50 DBS) 5.5%
5. Z39.50 NEWS 4.1%
6. SYSTEM NEWS 3.6%
7. LIBRARY NEWS 1.8%
8. 0408 1.4%
9. UCI NEWS 0.9%
10. LOCATION 0.5%
11. All others 3.6%