MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 02/01/00 through 02/29/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 526 462 988
Davis 167 0 167
Irvine 82 0 82
Los Angeles 45 248 293
Riverside 39 1 40
San Diego 30 27 57
San Francisco 31 0 31
Santa Barbara 132 68 200
Santa Cruz 157 28 185
Other - UC 15 45 60
Other-Network UC n/a 167 167
_______ ______ _____
1,224 1,046 2,270
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 27 307
2-4 a.m. 5 16 31
4-6 a.m. 2 1 3
6-8 a.m. 26 68 598
8-10 a.m. 252 614 3,956
10-12 a.m. 363 925 9,928
12-2 p.m. 449 1,233 13,609
2-4 p.m. 500 1,619 17,162
4-6 p.m. 365 1,186 13,542
6-8 p.m. 160 723 6,937
8-10 p.m. 96 337 3,446
10-12 p.m. 39 123 1,500
__________ __________ __________ _________________
Total: 2,270 6,872 71,019
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,759 1,344 3,103
Davis 498 0 498
Irvine 272 0 272
Los Angeles 146 590 736
Riverside 132 2 134
San Diego 95 60 155
San Francisco 97 0 97
Santa Barbara 414 290 704
Santa Cruz 593 92 685
Other - UC 5 115 120
Other-Network UC n/a 368 368
_______ ______ _____
4,011 2,861 6,872
Number of FIND commands by database
RLIN Bibliographic File 1,842
Anthropological Literature 2,244
Avery Index to Architectural Per. 1,820
History of Science & Technology 241
Index to Foreign Legal Periodical 84
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 359
English Short Title Catalogue 282
Total number of FIND commands 6,872
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 22,341 12,083 34,424
Davis 4,153 0 4,153
Irvine 2,029 0 2,029
Los Angeles 920 7,193 8,113
Riverside 1,143 0 1,143
San Diego 890 254 1,144
San Francisco 695 0 695
Santa Barbara 3,300 3,212 6,512
Santa Cruz 6,749 959 7,708
Other - UC 33 1,574 1,607
Other-Network UC n/a 3,491 3,491
_______ ______ _____
42,253 28,766 71,019
Number of Records Displayed by database
RLIN Bibliographic File 18,361
Anthropological Literature 19,001
Avery Index to Architectural Per. 24,382
History of Science & Technology 3,250
Index to Foreign Legal Periodical 352
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 2,800
English Short Title Catalogue 2,873
Total number of Records Displayed 71,019
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 818 36.0%
Anthropological Literature 585 25.8%
Avery Index to Architectural Per. 527 23.2%
History of Science & Technology 105 4.6%
Index to Foreign Legal Periodical 22 1.0%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 133 5.9%
English Short Title Catalogue 80 3.5%
Percent of searches done in the RCAT database 26.8%
Percent of searches done in the ANTH database 32.7%
Percent of searches done in the ARCH database 26.5%
Percent of searches done in the HSCI database 3.5%
Percent of searches done in the FLEG database 1.2%
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 5.2%
Percent of searches done in the ESTC database 4.1%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 5.6
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) 11:10
Average session length (minutes:seconds) 13:08
Longest session recorded (minutes:seconds) 133:16
Average number of searches completed per session 2.2
Retrievals per search - median 3.0
Retrievals per search - average 371.8
Retrievals per search - standard deviation 5943.6
Percent of searches completed with 0 results 31.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,712 30.9%
DISPLAY (excluding automatic displays) 1,926 34.7%
HELP 58 1.0%
EXPLAIN 105 1.9%
SET/RESET 492 8.9%
SHOW 44 0.8%
ADD ON (AND, OR, AND NOT) 130 2.3%
LOGON or LOGOFF 793 14.3%
COMMENT 0 0.0%
USE 5 0.1%
OTHER 282 5.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.8%
SHORT 55.3%
LONG 13.8%
TAGS 0.0%
FIELDS 3.0%
PERIODICALS 3.1%
COMMENTS 0.0%
Other 14.0%
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 580 30.6% 140 24.1% 17 119.1 306.8
EXACT AUTHOR 14 0.7% 3 21.4% 34 40.0 30.3
CORPORATE AUTHOR 36 1.9% 11 30.6% 9 98.8 204.9
EXACT CORPORATE 1 0.1% 1 100% 0 0.0 0.0
TITLE WORD 769 40.6% 242 31.5% 8 380.9 1926.8
EXACT TITLE/SERI 221 11.7% 89 40.3% 4 187.8 926.1
EXACT JOURNAL 3 0.2% 2 66.7% 138 138.0 0.0
SUBJECT 63 3.3% 19 30.2% 75 8877.3 37014.6
EXACT SUBJECT 6 0.3% 2 33.3% 643 745.3 701.8
SERIES 41 2.2% 19 46.3% 20 176.6 349.2
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 3 0.2% 0 0.0% 53 71.3 71.3
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 6 0.3% 5 83.3% 1 1.0 0.0
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 1 0.1% 1 100% 0 0.0 0.0
PLACE OF PUBL. 2 0.1% 0 0.0% 19 19.0 24.0
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 64 3.4% 30 46.9% 3 26.9 80.5
EXACT PE 13 0.7% 7 53.8% 2 2.5 2.3
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 70 3.7% 28 40.0% 5 23.0 37.8
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 194 11.5% 69 35.6% 5 42.7 147.9
Single 1,498 88.5% 460 30.7% 12 645.3 7864.9
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 6:52
Average session length (minutes:seconds) 11:02
Longest session recorded (minutes:seconds) 65:13
Average number of searches completed per session 3.8
Retrievals per search - median 3.0
Retrievals per search - average 252.3
Retrievals per search - standard deviation 4757.0
Percent of searches completed with 0 results 34.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,190 39.6%
DISPLAY (excluding automatic displays) 1,578 28.5%
HELP 246 4.4%
EXPLAIN 255 4.6%
SET/RESET 194 3.5%
SHOW 21 0.4%
ADD ON (AND, OR, AND NOT) 54 1.0%
LOGON or LOGOFF 798 14.4%
COMMENT 1 0.0%
USE 1 0.0%
OTHER 194 3.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 7.8%
SHORT 75.0%
LONG 11.6%
TAGS 0.1%
FIELDS 1.4%
PERIODICALS 3.2%
COMMENTS 0.0%
Other 1.0%
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 594 26.2% 124 20.9% 15 46.1 104.8
EXACT AUTHOR 9 0.4% 4 44.4% 15 563.4 1235.2
TITLE WORD 546 24.1% 227 41.6% 8 77.2 276.7
EXACT TITLE 36 1.6% 22 61.1% 1 4.7 7.6
SUBJECT 907 40.1% 355 39.1% 31 871.0 9555.9
EXACT SUBJECT 32 1.4% 15 46.9% 5 142.1 265.8
EXACT JOURNAL 55 2.4% 21 38.2% 282 813.0 1257.5
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 36 1.6% 4 11.1% 18 152.7 371.0
EXACT PE 7 0.3% 0 0.0% 2 3.1 2.4
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 41 1.8% 12 29.3% 10 49.9 94.3
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 73 3.3% 32 43.8% 6 36.4 81.8
Single 2,115 96.7% 718 33.9% 17 403.3 6022.1
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 7:21
Average session length (minutes:seconds) 10:52
Longest session recorded (minutes:seconds) 104:44
Average number of searches completed per session 3.5
Retrievals per search - median 5.0
Retrievals per search - average 144.9
Retrievals per search - standard deviation 1158.5
Percent of searches completed with 0 results 31.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,784 32.2%
DISPLAY (excluding automatic displays) 2,132 38.5%
HELP 186 3.4%
EXPLAIN 161 2.9%
SET/RESET 139 2.5%
SHOW 17 0.3%
ADD ON (AND, OR, AND NOT) 36 0.6%
LOGON or LOGOFF 805 14.5%
COMMENT 1 0.0%
USE 1 0.0%
OTHER 281 5.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.6%
SHORT 87.7%
LONG 4.6%
TAGS 0.0%
FIELDS 1.1%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 1.6%
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 170 9.4% 58 34.1% 12 25.5 49.5
EXACT AUTHOR 2 0.1% 1 50.0% 21 21.0 0.0
CORPORATE AUTHOR 2 0.1% 2 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 392 21.6% 129 32.9% 10 78.2 559.7
EXACT TITLE 13 0.7% 6 46.2% 4 5.3 5.4
SUBJECT 1,088 59.8% 333 30.6% 36 252.2 1663.8
EXACT SUBJECT 17 0.9% 12 70.6% 16 60.0 113.1
EXACT JOURNAL 23 1.3% 13 56.5% 2,186 3510.3 3249.6
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
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 17 0.9% 3 17.6% 58 92.6 103.7
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 43 2.4% 11 25.6% 38 150.6 355.1
EXACT PE 42 2.3% 14 33.3% 4 276.8 1116.8
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 9 0.5% 5 55.6% 27 50.5 65.3
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 29 1.6% 13 44.8% 40 81.2 101.4
Single 1,755 98.4% 558 31.8% 22 217.8 1422.7
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 3:22
Average session length (minutes:seconds) 6:55
Longest session recorded (minutes:seconds) 43:22
Average number of searches completed per session 2.3
Retrievals per search - median 4.0
Retrievals per search - average 101.3
Retrievals per search - standard deviation 450.4
Percent of searches completed with 0 results 34.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 235 29.6%
DISPLAY (excluding automatic displays) 194 24.4%
HELP 66 8.3%
EXPLAIN 69 8.7%
SET/RESET 22 2.8%
SHOW 2 0.3%
ADD ON (AND, OR, AND NOT) 6 0.8%
LOGON or LOGOFF 173 21.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 27 3.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 86.3%
LONG 9.2%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.2%
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 52 21.8% 17 32.7% 24 50.8 86.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 88 37.0% 25 28.4% 12 113.3 549.8
EXACT TITLE 8 3.4% 2 25.0% 4 8.7 14.0
EXACT JOURNAL 1 0.4% 1 100% 0 0.0 0.0
SUBJECT 86 36.1% 36 41.9% 29 251.8 637.7
EXACT SUBJECT 2 0.8% 1 50.0% 2,857 2857.0 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 1 0.4% 1 100% 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 1.3% 1 33.3% 2,156 2155.5 3031.4
Single 232 98.7% 81 34.9% 16 104.5 289.1
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 4:44
Average session length (minutes:seconds) 6:19
Longest session recorded (minutes:seconds) 23:24
Average number of searches completed per session 3.8
Retrievals per search - median 1.0
Retrievals per search - average 43.5
Retrievals per search - standard deviation 243.5
Percent of searches completed with 0 results 49.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 81 41.1%
DISPLAY (excluding automatic displays) 32 16.2%
HELP 17 8.6%
EXPLAIN 15 7.6%
SET/RESET 3 1.5%
SHOW 2 1.0%
ADD ON (AND, OR, AND NOT) 3 1.5%
LOGON or LOGOFF 35 17.8%
COMMENT 0 0.0%
USE 1 0.5%
OTHER 8 4.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 86.7%
LONG 8.9%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 2.2%
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 41 47.1% 13 31.7% 7 13.9 23.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 19 21.8% 13 68.4% 3 4.5 5.0
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 5 5.7% 2 40.0% 116 121.0 8.7
SUBJECT 21 24.1% 14 66.7% 6 405.7 796.1
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 1 1.1% 0 0.0% 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 7 8.7% 3 42.9% 3 3.0 2.3
Single 73 91.2% 36 49.3% 8 97.2 360.1
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 3:48
Average session length (minutes:seconds) 7:20
Longest session recorded (minutes:seconds) 36:30
Average number of searches completed per session 2.7
Retrievals per search - median 2.0
Retrievals per search - average 92.5
Retrievals per search - standard deviation 373.0
Percent of searches completed with 0 results 38.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 355 30.7%
DISPLAY (excluding automatic displays) 289 25.0%
HELP 94 8.1%
EXPLAIN 108 9.3%
SET/RESET 24 2.1%
SHOW 11 1.0%
ADD ON (AND, OR, AND NOT) 4 0.3%
LOGON or LOGOFF 218 18.8%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 53 4.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.6%
SHORT 82.0%
LONG 6.5%
TAGS 0.0%
FIELDS 0.6%
PERIODICALS 8.2%
COMMENTS 0.0%
Other 2.3%
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 54 15.2% 16 29.6% 10 33.0 79.9
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 1 0.3% 1 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 79 22.2% 40 50.6% 7 83.6 202.0
EXACT TITLE 10 2.8% 7 70.0% 1 4.3 5.8
ABSTRACT 2 0.6% 1 50.0% 581 581.0 0.0
SUBJECT 179 50.3% 62 34.6% 19 214.2 614.5
EXACT SUBJECT 8 2.2% 4 50.0% 11 86.5 157.1
EXACT JOURNAL 5 1.4% 3 60.0% 546 545.5 98.3
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 1 0.3% 1 100% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 17 4.8% 4 23.5% 19 120.1 175.9
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 0.3% 1 100% 0 0.0 0.0
Single 354 99.7% 137 38.7% 17 152.8 470.4
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 11:03
Average session length (minutes:seconds) 15:43
Longest session recorded (minutes:seconds) 195:17
Average number of searches completed per session 3.5
Retrievals per search - median 3.0
Retrievals per search - average 259.8
Retrievals per search - standard deviation 2611.3
Percent of searches completed with 0 results 26.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 273 29.2%
DISPLAY (excluding automatic displays) 442 47.2%
HELP 13 1.4%
EXPLAIN 27 2.9%
SET/RESET 21 2.2%
SHOW 2 0.2%
ADD ON (AND, OR, AND NOT) 9 1.0%
LOGON or LOGOFF 130 13.9%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 18 1.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 17.9%
SHORT 39.5%
LONG 40.3%
TAGS 0.0%
FIELDS 0.8%
PERIODICALS 0.2%
COMMENTS 0.0%
Other 1.2%
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 38 9.7% 12 31.6% 10 40.1 62.3
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 49 12.6% 16 32.7% 29 125.4 443.6
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 169 43.3% 34 20.1% 4 182.0 764.2
EXACT TITLE 6 1.5% 5 83.3% 3 3.0 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 0 0.0% 0 0.0% 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 99 25.4% 24 24.2% 3 3.9 4.4
COUNTRY CODE 0 0.0% 0 0.0% 0 0.0 0.0
SHELFMARK 4 1.0% 4 100% 0 0.0 0.0
HOLDING LIBRARY 5 1.3% 3 60.0% 21,400 21399.5 30262.0
INDEXED BY 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 3 0.8% 2 66.7% 1 1.0 0.0
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 11 2.8% 0 0.0% 59 47.7 29.1
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 2 0.5% 0 0.0% 2 2.0 1.4
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 4 1.0% 3 75.0% 1,239 1239.0 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 119 43.9% 31 26.0% 3 23.4 132.3
Single 152 56.1% 41 27.0% 29 635.2 4128.6
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 15.1%
Ten most frequent errors:
1. First word of command is invalid 35.8%
2. NS command - no next screen 19.1%
3. FIND command with invalid index name 10.6%
4. Index invalid in current database 4.8%
5. Valid command at an inappropriate time 3.3%
6. PS command - no previous screen 3.2%
7. DISPLAY command contains invalid word 2.3%
8. Search term missing from search command 1.1%
9. Z39.50 host unable to process search 1.1%
10. 1188 1.1%
11. All others 17.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 26.5%
2. GUIDE (Z39.50 A&I DBS) 14.1%
3. FIND (Z39.50 DBS) 9.2%
4. INDEXES (ANTH DB) 6.5%
5. COMMANDS (Z39.50 DBS) 5.1%
6. Unrecognized term 4.7%
7. INDEXES (RCAT DB) 3.1%
8. DISPLAY (Z39.50 DBS) 2.2%
9. G971 2.2%
10. INDEXES (ARCH DB) 1.9%
11. All others 24.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.8%
2. First word of command is invalid 17.5%
3. DISPLAY command-complete in one screen 10.6%
4. FIND command with invalid index name 7.7%
5. F/BR with index invalid in current DB 6.1%
6. FIND command with zero results 6.1%
7. DISPLAY command-first of >1 screen 5.4%
8. DISPLAY command - middle of >1 screen 3.7%
9. FIND command retrieves 1 book 2.7%
10. NS command - no next screen 2.1%
11. All others 15.3%
Ten most frequent SHOW requests:
1. HISTORY 61.6%
2. SEARCH 21.2%
3. GLOSSARY 4.0%
4. FORM NAMES (RCAT DB) 3.0%
5. Z39.50 NEWS 3.0%
6. SETTINGS (Z39.50 DBS) 3.0%
7. IAC NEWS 1.0%
8. SYSTEM NEWS 1.0%
9. USE SYSTEMS 1.0%
10. DATABASES 1.0%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)