MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 01/01/02 through 01/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 300 350 650
Davis 100 12 112
Irvine 37 0 37
Los Angeles 0 229 229
Riverside 57 1 58
San Diego 48 40 88
San Francisco 7 0 7
Santa Barbara 131 45 176
Santa Cruz 8 13 21
Other - UC 14 15 29
Other-Network UC n/a 1,906 1,906
_______ ______ _____
702 2,611 3,313
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 33 151
2-4 a.m. 4 6 26
4-6 a.m. 7 24 224
6-8 a.m. 50 167 1,455
8-10 a.m. 491 1,202 9,265
10-12 a.m. 863 2,023 17,110
12-2 p.m. 655 1,381 11,321
2-4 p.m. 784 2,022 14,115
4-6 p.m. 323 792 7,554
6-8 p.m. 82 270 2,886
8-10 p.m. 37 100 1,171
10-12 p.m. 9 34 617
__________ __________ __________ _________________
Total: 3,313 8,054 65,895
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,164 1,159 2,323
Davis 218 14 232
Irvine 93 0 93
Los Angeles 0 776 776
Riverside 129 2 131
San Diego 68 76 144
San Francisco 10 0 10
Santa Barbara 356 102 458
Santa Cruz 81 42 123
Other - UC 0 70 70
Other-Network UC n/a 3,694 3,694
_______ ______ _____
2,119 5,935 8,054
Number of FIND commands by database
RLIN Bibliographic File 6,830
Anthropological Literature 459
Avery Index to Architectural Per. 301
History of Science & Technology 106
Index to Foreign Legal Periodical 13
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 161
English Short Title Catalogue 184
Total number of FIND commands 8,054
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,446 12,621 20,067
Davis 1,675 36 1,711
Irvine 1,046 0 1,046
Los Angeles 0 9,205 9,205
Riverside 1,232 7 1,239
San Diego 497 1,187 1,684
San Francisco 151 0 151
Santa Barbara 3,066 1,378 4,444
Santa Cruz 750 355 1,105
Other - UC 0 1,280 1,280
Other-Network UC n/a 23,963 23,963
_______ ______ _____
15,863 50,032 65,895
Number of Records Displayed by database
RLIN Bibliographic File 53,996
Anthropological Literature 3,502
Avery Index to Architectural Per. 2,903
History of Science & Technology 1,341
Index to Foreign Legal Periodical 44
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,346
English Short Title Catalogue 2,763
Total number of Records Displayed 65,895
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 2,858 86.3%
Anthropological Literature 205 6.2%
Avery Index to Architectural Per. 81 2.4%
History of Science & Technology 35 1.1%
Index to Foreign Legal Periodical 6 0.2%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 69 2.1%
English Short Title Catalogue 59 1.8%
Percent of searches done in the RCAT database 84.8%
Percent of searches done in the ANTH database 5.7%
Percent of searches done in the ARCH database 3.7%
Percent of searches done in the HSCI database 1.3%
Percent of searches done in the FLEG database 0.2%
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 2.0%
Percent of searches done in the ESTC database 2.3%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 4.5
Standard deviation in seconds 12.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 2.3
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 16:06
Average session length (minutes:seconds) 21:39
Longest session recorded (minutes:seconds) 395:41
Average number of searches completed per session 2.4
Retrievals per search - median 3.0
Retrievals per search - average 212.7
Retrievals per search - standard deviation 3289.6
Percent of searches completed with 0 results 23.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,274 31.1%
DISPLAY (excluding automatic displays) 8,308 41.2%
HELP 51 0.3%
EXPLAIN 69 0.3%
SET/RESET 1,981 9.8%
SHOW 38 0.2%
ADD ON (AND, OR, AND NOT) 556 2.8%
LOGON or LOGOFF 2,301 11.4%
COMMENT 0 0.0%
USE 4 0.0%
OTHER 593 2.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.1%
SHORT 53.1%
LONG 8.4%
TAGS 0.2%
FIELDS 7.7%
PERIODICALS 12.8%
COMMENTS 0.0%
Other 12.9%
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 1,277 18.7% 262 20.5% 11 175.1 2050.8
EXACT AUTHOR 8 0.1% 0 0.0% 76 66.4 54.0
CORPORATE AUTHOR 38 0.6% 12 31.6% 17 28.1 36.1
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 2,929 42.9% 683 23.3% 8 480.4 5391.2
EXACT TITLE/SERI 563 8.2% 137 24.3% 3 47.3 322.6
EXACT JOURNAL 6 0.1% 0 0.0% 12 182.0 356.3
SUBJECT 83 1.2% 13 15.7% 31 1108.4 4306.7
EXACT SUBJECT 6 0.1% 5 83.3% 1,200 1200.0 0.0
SERIES 98 1.4% 40 40.8% 46 185.3 548.3
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 19 0.3% 3 15.8% 10 77.9 217.4
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 7 0.1% 6 85.7% 1 1.0 0.0
PLACE OF PUBL. 5 0.1% 2 40.0% 1 1.0 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 650 9.5% 179 27.5% 4 135.0 2036.7
EXACT PE 77 1.1% 6 7.8% 5 65.0 180.2
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 1,062 15.6% 315 29.7% 2 15.4 94.2
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 599 9.7% 149 24.9% 4 47.4 311.6
Single 5,608 90.3% 1,358 24.2% 6 331.0 4142.4
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 4:10
Average session length (minutes:seconds) 7:56
Longest session recorded (minutes:seconds) 47:58
Average number of searches completed per session 2.2
Retrievals per search - median 3.0
Retrievals per search - average 206.6
Retrievals per search - standard deviation 1456.2
Percent of searches completed with 0 results 33.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 447 37.9%
DISPLAY (excluding automatic displays) 272 23.1%
HELP 37 3.1%
EXPLAIN 32 2.7%
SET/RESET 80 6.8%
SHOW 8 0.7%
ADD ON (AND, OR, AND NOT) 12 1.0%
LOGON or LOGOFF 240 20.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 50 4.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.1%
SHORT 78.9%
LONG 8.2%
TAGS 0.0%
FIELDS 2.2%
PERIODICALS 3.8%
COMMENTS 0.0%
Other 2.7%
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 173 37.7% 45 26.0% 15 45.1 90.2
EXACT AUTHOR 1 0.2% 0 0.0% 15 15.0 0.0
TITLE WORD 162 35.3% 74 45.7% 10 47.4 82.3
EXACT TITLE 8 1.7% 5 62.5% 2 79.7 135.4
SUBJECT 65 14.2% 14 21.5% 25 970.0 3345.4
EXACT SUBJECT 12 2.6% 5 41.7% 8 460.6 774.3
EXACT JOURNAL 9 2.0% 7 77.8% 2,482 2481.5 3474.0
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 19 4.1% 8 42.1% 2 2405.9 5346.1
EXACT PE 3 0.7% 0 0.0% 67 45.0 38.1
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 7 1.5% 1 14.3% 2 26.0 58.8
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 13 2.9% 6 46.2% 1 2.4 2.1
Single 433 97.1% 147 33.9% 14 330.7 1832.9
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 8:07
Average session length (minutes:seconds) 29:05
Longest session recorded (minutes:seconds) 1063
Average number of searches completed per session 3.7
Retrievals per search - median 5.5
Retrievals per search - average 156.7
Retrievals per search - standard deviation 1098.4
Percent of searches completed with 0 results 25.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 280 35.9%
DISPLAY (excluding automatic displays) 260 33.3%
HELP 28 3.6%
EXPLAIN 30 3.8%
SET/RESET 29 3.7%
SHOW 1 0.1%
ADD ON (AND, OR, AND NOT) 21 2.7%
LOGON or LOGOFF 108 13.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 23 2.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 81.4%
LONG 9.0%
TAGS 0.0%
FIELDS 1.3%
PERIODICALS 6.1%
COMMENTS 0.0%
Other 0.3%
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 34 11.0% 12 35.3% 7 16.3 19.6
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 CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 104 33.7% 24 23.1% 29 56.2 65.1
EXACT TITLE 2 0.6% 1 50.0% 2 2.0 0.0
SUBJECT 124 40.1% 31 25.0% 19 406.9 1949.6
EXACT SUBJECT 8 2.6% 4 50.0% 328 348.8 350.5
EXACT JOURNAL 9 2.9% 3 33.3% 58 109.0 163.2
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
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 5 1.6% 1 20.0% 361 673.0 877.2
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 5 1.6% 1 20.0% 4 13.3 18.5
EXACT PE 10 3.2% 0 0.0% 6 5.9 4.2
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 8 2.6% 2 25.0% 72 364.7 774.9
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 24 8.6% 5 20.8% 19 164.3 449.6
Single 256 91.4% 68 26.6% 13 220.8 1374.7
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 2:52
Average session length (minutes:seconds) 7:40
Longest session recorded (minutes:seconds) 41:35
Average number of searches completed per session 3.0
Retrievals per search - median 2.0
Retrievals per search - average 31.5
Retrievals per search - standard deviation 94.7
Percent of searches completed with 0 results 41.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 105 36.2%
DISPLAY (excluding automatic displays) 97 33.4%
HELP 7 2.4%
EXPLAIN 19 6.6%
SET/RESET 12 4.1%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 0.3%
LOGON or LOGOFF 45 15.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 4 1.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 96.5%
LONG 0.9%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.9%
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 25 23.8% 7 28.0% 16 18.4 13.4
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 71 67.6% 33 46.5% 17 66.0 140.6
EXACT TITLE 3 2.9% 0 0.0% 1 1.0 0.0
EXACT JOURNAL 1 1.0% 0 0.0% 346 346.0 0.0
SUBJECT 5 4.8% 4 80.0% 147 147.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 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 105 100% 44 41.9% 15 54.7 120.1
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 1:44
Average session length (minutes:seconds) 2:56
Longest session recorded (minutes:seconds) 9:13
Average number of searches completed per session 2.2
Retrievals per search - median 0.0
Retrievals per search - average 8.1
Retrievals per search - standard deviation 14.4
Percent of searches completed with 0 results 69.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 13 38.2%
DISPLAY (excluding automatic displays) 4 11.8%
HELP 0 0.0%
EXPLAIN 4 11.8%
SET/RESET 1 2.9%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 10 29.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 2 5.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 80.0%
LONG 20.0%
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 11 84.6% 8 72.7% 20 21.3 12.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 2 15.4% 1 50.0% 41 41.0 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 0 0.0% 0 0.0% 0 0.0 0.0
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 13 100% 9 69.2% 27 26.3 13.9
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 11:36
Average session length (minutes:seconds) 13:49
Longest session recorded (minutes:seconds) 134:56
Average number of searches completed per session 2.3
Retrievals per search - median 6.0
Retrievals per search - average 145.5
Retrievals per search - standard deviation 440.9
Percent of searches completed with 0 results 28.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 152 33.9%
DISPLAY (excluding automatic displays) 103 22.9%
HELP 15 3.3%
EXPLAIN 14 3.1%
SET/RESET 9 2.0%
SHOW 3 0.7%
ADD ON (AND, OR, AND NOT) 9 2.0%
LOGON or LOGOFF 120 26.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 24 5.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.8%
SHORT 44.2%
LONG 50.4%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 4.7%
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 19 12.5% 7 36.8% 18 112.3 311.8
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 16 10.5% 8 50.0% 7 14.9 21.9
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 98 64.5% 26 26.5% 19 173.4 373.6
EXACT SUBJECT 2 1.3% 1 50.0% 1 1.0 0.0
EXACT JOURNAL 17 11.2% 2 11.8% 164 532.6 1037.3
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 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 152 100% 44 28.9% 23 203.2 513.0
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 10:21
Average session length (minutes:seconds) 13:05
Longest session recorded (minutes:seconds) 79:43
Average number of searches completed per session 3.1
Retrievals per search - median 5.0
Retrievals per search - average 183.5
Retrievals per search - standard deviation 1706.6
Percent of searches completed with 0 results 25.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 175 27.6%
DISPLAY (excluding automatic displays) 261 41.2%
HELP 11 1.7%
EXPLAIN 56 8.8%
SET/RESET 22 3.5%
SHOW 10 1.6%
ADD ON (AND, OR, AND NOT) 9 1.4%
LOGON or LOGOFF 79 12.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 10 1.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.9%
SHORT 46.2%
LONG 43.1%
TAGS 0.7%
FIELDS 0.0%
PERIODICALS 1.0%
COMMENTS 0.0%
Other 2.1%
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 11 4.7% 6 54.5% 15 16.6 18.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 55 23.7% 14 25.5% 17 73.6 120.6
EXACT AUTHOR 1 0.4% 0 0.0% 48 48.0 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 104 44.8% 18 17.3% 11 328.1 2484.4
EXACT TITLE 5 2.2% 1 20.0% 480 576.3 245.8
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 14 6.0% 1 7.1% 6 23.6 42.1
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 2 0.9% 1 50.0% 10 10.0 0.0
INDEXED BY 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 10 4.3% 5 50.0% 5 7.2 9.6
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 29 12.5% 3 10.3% 16 27.4 28.1
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 1 0.4% 0 0.0% 21 21.0 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 57 32.8% 10 17.5% 9 25.0 33.6
Single 117 67.2% 28 23.9% 18 364.1 2441.0
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 9.6%
Ten most frequent errors:
1. NS command - no next screen 24.5%
2. First word of command is invalid 15.4%
3. Z39.50 host unable to process search 8.3%
4. FIND command with invalid index name 6.2%
5. DISPLAY command contains invalid word 3.0%
6. Search term missing from search command 2.2%
7. Index invalid in current database 2.1%
8. DISPLAY command - no FIND results 1.4%
9. PS command - no previous screen 1.2%
10. Valid command at an inappropriate time 1.1%
11. All others 34.5%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 8.9%
2. FIND (Z39.50 DBS) 8.5%
3. GUIDE (Z39.50 A&I DBS) 8.0%
4. LOCATE (Z39.50 DBS) 6.3%
5. LOCATIONS (ESTC DB) 6.3%
6. COMMANDS (Z39.50 DBS) 6.3%
7. Unrecognized term 5.4%
8. INDEXES (RCAT DB) 4.9%
9. G577 2.7%
10. INDEXES (CHI DB) 2.2%
11. All others 40.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.9%
2. First word of command is invalid 15.3%
3. DISPLAY command - middle of >1 screen 12.9%
4. DISPLAY command-complete in one screen 7.5%
5. F/BR with index invalid in current DB 5.4%
6. FIND command with zero results 4.8%
7. DISPLAY command-first of >1 screen 4.8%
8. FIND command with invalid index name 4.6%
9. FIND command retrieves 1 book 2.4%
10. MELVYL system could not process command 2.1%
11. All others 19.3%
Ten most frequent SHOW requests:
1. HISTORY 83.3%
2. SEARCH 8.3%
3. SETTINGS (Z39.50 DBS) 5.0%
4. LOCATION 1.7%
11. All others 1.7%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)