MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 03/01/00 through 03/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 489 593 1,082
Davis 157 0 157
Irvine 206 0 206
Los Angeles 12 214 226
Riverside 74 5 79
San Diego 37 110 147
San Francisco 28 0 28
Santa Barbara 229 90 319
Santa Cruz 128 16 144
Other - UC 4 43 47
Other-Network UC n/a 200 200
_______ ______ _____
1,364 1,271 2,635
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 34 171
2-4 a.m. 4 16 37
4-6 a.m. 5 9 46
6-8 a.m. 32 93 903
8-10 a.m. 276 703 6,129
10-12 a.m. 428 1,198 10,786
12-2 p.m. 474 1,303 12,760
2-4 p.m. 641 2,136 22,069
4-6 p.m. 393 1,459 16,058
6-8 p.m. 171 494 4,865
8-10 p.m. 141 418 4,535
10-12 p.m. 58 223 1,507
__________ __________ __________ _________________
Total: 2,635 8,086 79,866
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,838 1,920 3,758
Davis 371 0 371
Irvine 908 0 908
Los Angeles 33 589 622
Riverside 178 28 206
San Diego 90 179 269
San Francisco 72 0 72
Santa Barbara 666 232 898
Santa Cruz 304 30 334
Other - UC 6 121 127
Other-Network UC n/a 521 521
_______ ______ _____
4,466 3,620 8,086
Number of FIND commands by database
RLIN Bibliographic File 3,237
Anthropological Literature 2,358
Avery Index to Architectural Per. 1,308
History of Science & Technology 237
Index to Foreign Legal Periodical 47
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 544
English Short Title Catalogue 355
Total number of FIND commands 8,086
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17,969 31,246 49,215
Davis 3,723 0 3,723
Irvine 3,541 0 3,541
Los Angeles 213 3,759 3,972
Riverside 1,601 243 1,844
San Diego 690 1,401 2,091
San Francisco 784 0 784
Santa Barbara 4,017 2,160 6,177
Santa Cruz 2,657 171 2,828
Other - UC 135 1,126 1,261
Other-Network UC n/a 4,430 4,430
_______ ______ _____
35,330 44,536 79,866
Number of Records Displayed by database
RLIN Bibliographic File 40,257
Anthropological Literature 16,329
Avery Index to Architectural Per. 13,909
History of Science & Technology 1,669
Index to Foreign Legal Periodical 211
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 3,854
English Short Title Catalogue 3,637
Total number of Records Displayed 79,866
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,245 47.2%
Anthropological Literature 622 23.6%
Avery Index to Architectural Per. 321 12.2%
History of Science & Technology 105 4.0%
Index to Foreign Legal Periodical 29 1.1%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 211 8.0%
English Short Title Catalogue 102 3.9%
Percent of searches done in the RCAT database 40.0%
Percent of searches done in the ANTH database 29.2%
Percent of searches done in the ARCH database 16.2%
Percent of searches done in the HSCI database 2.9%
Percent of searches done in the FLEG database 0.6%
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 6.7%
Percent of searches done in the ESTC database 4.4%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.5
Standard deviation in seconds 6.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 9:37
Average session length (minutes:seconds) 13:09
Longest session recorded (minutes:seconds) 160:05
Average number of searches completed per session 2.6
Retrievals per search - median 3.0
Retrievals per search - average 302.6
Retrievals per search - standard deviation 3542.4
Percent of searches completed with 0 results 28.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,003 32.2%
DISPLAY (excluding automatic displays) 3,528 37.8%
HELP 73 0.8%
EXPLAIN 98 1.1%
SET/RESET 829 8.9%
SHOW 84 0.9%
ADD ON (AND, OR, AND NOT) 234 2.5%
LOGON or LOGOFF 1,105 11.9%
COMMENT 0 0.0%
USE 6 0.1%
OTHER 362 3.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.6%
SHORT 54.6%
LONG 15.7%
TAGS 0.1%
FIELDS 5.0%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 14.1%
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 1,063 30.9% 281 26.4% 13 275.1 2732.9
EXACT AUTHOR 15 0.4% 3 20.0% 47 81.4 151.5
CORPORATE AUTHOR 61 1.8% 15 24.6% 7 80.0 199.6
EXACT CORPORATE 1 0.0% 0 0.0% 8 8.0 0.0
TITLE WORD 1,423 41.4% 432 30.4% 6 542.4 5666.1
EXACT TITLE/SERI 460 13.4% 140 30.4% 4 186.6 1280.3
EXACT JOURNAL 4 0.1% 0 0.0% 106 137.5 77.8
SUBJECT 107 3.1% 22 20.6% 80 1648.5 4570.5
EXACT SUBJECT 5 0.1% 1 20.0% 241 545.8 778.1
SERIES 65 1.9% 27 41.5% 7 78.9 266.8
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 9 0.3% 3 33.3% 33 45.8 47.3
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 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 1 0.0% 1 100% 0 0.0 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 82 2.4% 34 41.5% 4 59.3 152.2
EXACT PE 10 0.3% 7 70.0% 12 18.7 19.9
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 129 3.8% 52 40.3% 4 24.1 53.6
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 445 15.0% 163 36.6% 3 19.5 89.8
Single 2,526 85.0% 684 27.1% 11 519.4 4661.0
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 5:09
Average session length (minutes:seconds) 9:36
Longest session recorded (minutes:seconds) 184:25
Average number of searches completed per session 3.8
Retrievals per search - median 1.0
Retrievals per search - average 225.6
Retrievals per search - standard deviation 1323.1
Percent of searches completed with 0 results 36.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,305 42.4%
DISPLAY (excluding automatic displays) 1,380 25.4%
HELP 226 4.2%
EXPLAIN 249 4.6%
SET/RESET 279 5.1%
SHOW 23 0.4%
ADD ON (AND, OR, AND NOT) 53 1.0%
LOGON or LOGOFF 765 14.1%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 157 2.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 80.3%
LONG 7.0%
TAGS 0.1%
FIELDS 3.0%
PERIODICALS 5.1%
COMMENTS 0.0%
Other 2.0%
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 542 22.7% 156 28.8% 11 35.9 83.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 447 18.8% 177 39.6% 9 188.2 727.9
EXACT TITLE 445 18.7% 193 43.4% 1 3.4 10.9
SUBJECT 710 29.8% 279 39.3% 26 749.8 2552.0
EXACT SUBJECT 12 0.5% 7 58.3% 26 70.4 63.6
EXACT JOURNAL 96 4.0% 30 31.3% 225 2147.5 3374.4
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 0.9% 4 19.0% 8 17.1 20.1
EXACT PE 58 2.4% 7 12.1% 3 9.9 33.3
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 52 2.2% 15 28.8% 4 17.0 31.9
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 80 3.5% 32 40.0% 3 26.1 60.2
Single 2,223 96.5% 804 36.2% 8 373.3 1688.9
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 6:52
Average session length (minutes:seconds) 12:11
Longest session recorded (minutes:seconds) 234:25
Average number of searches completed per session 4.1
Retrievals per search - median 4.0
Retrievals per search - average 188.7
Retrievals per search - standard deviation 1576.6
Percent of searches completed with 0 results 33.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,257 35.4%
DISPLAY (excluding automatic displays) 1,388 39.1%
HELP 69 1.9%
EXPLAIN 63 1.8%
SET/RESET 109 3.1%
SHOW 16 0.5%
ADD ON (AND, OR, AND NOT) 51 1.4%
LOGON or LOGOFF 459 12.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 139 3.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 75.9%
LONG 12.3%
TAGS 0.0%
FIELDS 3.3%
PERIODICALS 4.7%
COMMENTS 0.0%
Other 0.8%
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 157 12.3% 72 45.9% 11 36.2 79.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 13 1.0% 11 84.6% 74 74.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 231 18.0% 71 30.7% 11 123.0 660.1
EXACT TITLE 14 1.1% 4 28.6% 2 9.5 12.8
SUBJECT 782 61.1% 250 32.0% 23 405.4 2424.5
EXACT SUBJECT 7 0.5% 4 57.1% 7 12.0 11.4
EXACT JOURNAL 16 1.2% 7 43.8% 129 410.8 676.7
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 9 0.7% 0 0.0% 89 171.8 227.5
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 19 1.5% 6 31.6% 77 128.0 248.4
EXACT PE 26 2.0% 4 15.4% 8 14.3 36.3
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 6 0.5% 1 16.7% 48 69.6 44.8
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 21 1.7% 6 28.6% 48 106.9 190.8
Single 1,235 98.3% 418 33.8% 18 297.3 1984.8
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 2:38
Average session length (minutes:seconds) 5:12
Longest session recorded (minutes:seconds) 42:07
Average number of searches completed per session 2.3
Retrievals per search - median 3.0
Retrievals per search - average 219.7
Retrievals per search - standard deviation 1943.4
Percent of searches completed with 0 results 32.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 230 32.8%
DISPLAY (excluding automatic displays) 166 23.6%
HELP 39 5.6%
EXPLAIN 45 6.4%
SET/RESET 22 3.1%
SHOW 2 0.3%
ADD ON (AND, OR, AND NOT) 7 1.0%
LOGON or LOGOFF 163 23.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 28 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.0%
SHORT 78.5%
LONG 4.6%
TAGS 0.0%
FIELDS 2.3%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 2.7%
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 37 15.7% 15 40.5% 23 22.3 19.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 87 37.0% 21 24.1% 8 223.3 1657.4
EXACT TITLE 3 1.3% 2 66.7% 23 23.0 0.0
EXACT JOURNAL 2 0.9% 0 0.0% 129 128.5 136.5
SUBJECT 92 39.1% 33 35.9% 18 618.9 3469.8
EXACT SUBJECT 3 1.3% 2 66.7% 4 4.0 0.0
SERIES 1 0.4% 1 100% 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 7 3.0% 4 57.1% 2 1.7 0.6
EXACT PE 1 0.4% 0 0.0% 10 10.0 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 0.9% 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 5 2.2% 2 40.0% 1 3.7 4.6
Single 225 97.8% 75 33.3% 10 346.9 2436.8
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 1:52
Average session length (minutes:seconds) 4:44
Longest session recorded (minutes:seconds) 24:39
Average number of searches completed per session 1.6
Retrievals per search - median 0.0
Retrievals per search - average 114.5
Retrievals per search - standard deviation 485.2
Percent of searches completed with 0 results 59.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 47 32.4%
DISPLAY (excluding automatic displays) 19 13.1%
HELP 9 6.2%
EXPLAIN 11 7.6%
SET/RESET 5 3.4%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 47 32.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 7 4.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.8%
SHORT 80.9%
LONG 14.3%
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 27 55.1% 22 81.5% 12 18.8 22.6
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 7 14.3% 2 28.6% 46 548.2 1125.8
EXACT TITLE 1 2.0% 0 0.0% 24 24.0 0.0
EXACT JOURNAL 2 4.1% 1 50.0% 2 2.0 0.0
SUBJECT 9 18.4% 1 11.1% 53 315.4 762.9
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 3 6.1% 2 66.7% 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 2 4.3% 0 0.0% 2 1.5 0.7
Single 45 95.7% 28 62.2% 46 316.4 780.4
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 3:56
Average session length (minutes:seconds) 6:45
Longest session recorded (minutes:seconds) 44:38
Average number of searches completed per session 2.6
Retrievals per search - median 2.0
Retrievals per search - average 64.2
Retrievals per search - standard deviation 228.5
Percent of searches completed with 0 results 35.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 536 31.9%
DISPLAY (excluding automatic displays) 401 23.9%
HELP 150 8.9%
EXPLAIN 133 7.9%
SET/RESET 34 2.0%
SHOW 9 0.5%
ADD ON (AND, OR, AND NOT) 8 0.5%
LOGON or LOGOFF 337 20.1%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 72 4.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 81.0%
LONG 9.4%
TAGS 0.0%
FIELDS 0.6%
PERIODICALS 6.3%
COMMENTS 0.0%
Other 1.6%
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 50 9.2% 23 46.0% 7 29.1 55.8
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 1 0.2% 0 0.0% 1 1.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 146 26.9% 48 32.9% 10 93.3 292.5
EXACT TITLE 19 3.5% 12 63.2% 2 2.0 1.2
ABSTRACT 1 0.2% 1 100% 0 0.0 0.0
SUBJECT 277 51.0% 91 32.9% 15 124.5 307.1
EXACT SUBJECT 15 2.8% 10 66.7% 9 192.0 410.9
EXACT JOURNAL 13 2.4% 4 30.8% 6 10.0 7.5
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 7 1.3% 6 85.7% 1,511 1511.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 13 2.4% 4 30.8% 5 26.7 36.8
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 0.2% 0 0.0% 5 5.0 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 8 1.5% 6 75.0% 756 756.0 1067.7
Single 527 98.5% 187 35.5% 11 96.7 271.6
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 10:45
Average session length (minutes:seconds) 12:40
Longest session recorded (minutes:seconds) 197:43
Average number of searches completed per session 3.5
Retrievals per search - median 3.0
Retrievals per search - average 247.6
Retrievals per search - standard deviation 2317.5
Percent of searches completed with 0 results 33.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 345 32.4%
DISPLAY (excluding automatic displays) 421 39.5%
HELP 22 2.1%
EXPLAIN 29 2.7%
SET/RESET 52 4.9%
SHOW 1 0.1%
ADD ON (AND, OR, AND NOT) 10 0.9%
LOGON or LOGOFF 170 16.0%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 15 1.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.1%
SHORT 47.8%
LONG 43.7%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.2%
COMMENTS 0.0%
Other 0.2%
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 44 8.9% 17 38.6% 14 56.9 135.5
EXACT SUBJECT 1 0.2% 1 100% 0 0.0 0.0
AUTHOR 123 25.0% 47 38.2% 11 57.1 261.0
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 156 31.7% 48 30.8% 8 362.8 1801.1
EXACT TITLE 18 3.7% 5 27.8% 9 18.8 38.6
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 12 2.4% 3 25.0% 6 7.4 7.9
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 84 17.1% 22 26.2% 5 14.5 25.0
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 23 4.7% 4 17.4% 10 2247.5 8988.9
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 6 1.2% 3 50.0% 4 7.0 7.9
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 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 25 5.1% 10 40.0% 11 130.3 416.3
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 127 36.9% 36 28.3% 7 35.7 171.7
Single 217 63.1% 79 36.4% 15 611.3 3687.9
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 12.8%
Ten most frequent errors:
1. First word of command is invalid 30.4%
2. NS command - no next screen 22.0%
3. FIND command with invalid index name 11.8%
4. Index invalid in current database 5.2%
5. PS command - no previous screen 2.8%
6. Valid command at an inappropriate time 2.7%
7. DISPLAY command contains invalid word 2.4%
8. Search term missing from search command 1.5%
9. Z39.50 host unable to process search 1.3%
10. DISPLAY command - no FIND results 1.2%
11. All others 18.5%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 23.4%
2. GUIDE (Z39.50 A&I DBS) 17.4%
3. FIND (Z39.50 DBS) 10.2%
4. COMMANDS (Z39.50 DBS) 6.8%
5. INDEXES (ANTH DB) 5.9%
6. Unrecognized term 3.8%
7. INDEXES (RCAT DB) 3.2%
8. GUIDE (Z39.50 non-A&I DBS) 2.1%
9. LOCATE (Z39.50 DBS) 1.9%
10. INDEXES (CHI DB) 1.4%
11. All others 23.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.2%
2. First word of command is invalid 17.3%
3. FIND command with invalid index name 10.4%
4. DISPLAY command-complete in one screen 7.5%
5. F/BR with index invalid in current DB 6.2%
6. FIND command with zero results 5.8%
7. DISPLAY command-first of >1 screen 4.8%
8. DISPLAY command - middle of >1 screen 3.3%
9. DISPLAY command - last of >1 screen 2.7%
10. FIND command retrieves 1 book 2.6%
11. All others 14.3%
Ten most frequent SHOW requests:
1. HISTORY 73.3%
2. SEARCH 16.3%
3. GLOSSARY 3.7%
4. SETTINGS (Z39.50 DBS) 3.0%
5. Z39.50 NEWS 1.5%
6. SYSTEM NEWS 0.7%
7. LANGUAGE CODES 0.7%
8. DATABASES 0.7%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)