MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 03/01/02 through 03/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 361 336 697
Davis 104 12 116
Irvine 34 0 34
Los Angeles 1 236 237
Riverside 3 2 5
San Diego 42 29 71
San Francisco 13 0 13
Santa Barbara 92 26 118
Santa Cruz 53 5 58
Other - UC 0 35 35
Other-Network UC n/a 1,741 1,741
_______ ______ _____
703 2,422 3,125
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 42 211
2-4 a.m. 4 25 194
4-6 a.m. 6 14 119
6-8 a.m. 63 128 1,353
8-10 a.m. 461 991 8,708
10-12 a.m. 734 1,598 12,800
12-2 p.m. 610 1,490 12,576
2-4 p.m. 777 2,112 15,675
4-6 p.m. 333 1,089 7,671
6-8 p.m. 80 366 2,984
8-10 p.m. 33 179 1,713
10-12 p.m. 15 51 455
__________ __________ __________ _________________
Total: 3,125 8,085 64,459
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,544 1,255 2,799
Davis 231 21 252
Irvine 135 0 135
Los Angeles 1 534 535
Riverside 6 37 43
San Diego 96 51 147
San Francisco 11 0 11
Santa Barbara 260 92 352
Santa Cruz 677 29 706
Other - UC 0 77 77
Other-Network UC n/a 3,028 3,028
_______ ______ _____
2,961 5,124 8,085
Number of FIND commands by database
RLIN Bibliographic File 6,932
Anthropological Literature 495
Avery Index to Architectural Per. 311
History of Science & Technology 67
Index to Foreign Legal Periodical 5
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 103
English Short Title Catalogue 172
Total number of FIND commands 8,085
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,057 12,896 20,953
Davis 1,595 219 1,814
Irvine 1,344 0 1,344
Los Angeles 4 7,640 7,644
Riverside 33 121 154
San Diego 657 924 1,581
San Francisco 388 0 388
Santa Barbara 3,106 827 3,933
Santa Cruz 5,478 467 5,945
Other - UC 0 333 333
Other-Network UC n/a 20,370 20,370
_______ ______ _____
20,662 43,797 64,459
Number of Records Displayed by database
RLIN Bibliographic File 55,388
Anthropological Literature 3,282
Avery Index to Architectural Per. 2,771
History of Science & Technology 402
Index to Foreign Legal Periodical 3
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,128
English Short Title Catalogue 1,485
Total number of Records Displayed 64,459
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 2,759 88.3%
Anthropological Literature 160 5.1%
Avery Index to Architectural Per. 82 2.6%
History of Science & Technology 37 1.2%
Index to Foreign Legal Periodical 11 0.4%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 42 1.3%
English Short Title Catalogue 34 1.1%
Percent of searches done in the RCAT database 85.7%
Percent of searches done in the ANTH database 6.1%
Percent of searches done in the ARCH database 3.8%
Percent of searches done in the HSCI database 0.8%
Percent of searches done in the FLEG database 0.1%
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 1.3%
Percent of searches done in the ESTC database 2.1%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 3.0
Standard deviation in seconds 11.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 16:06
Average session length (minutes:seconds) 21:35
Longest session recorded (minutes:seconds) 495:04
Average number of searches completed per session 2.5
Retrievals per search - median 2.0
Retrievals per search - average 204.1
Retrievals per search - standard deviation 5651.8
Percent of searches completed with 0 results 24.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,452 31.4%
DISPLAY (excluding automatic displays) 8,859 43.1%
HELP 27 0.1%
EXPLAIN 39 0.2%
SET/RESET 1,898 9.2%
SHOW 16 0.1%
ADD ON (AND, OR, AND NOT) 480 2.3%
LOGON or LOGOFF 2,217 10.8%
COMMENT 0 0.0%
USE 8 0.0%
OTHER 546 2.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.0%
SHORT 52.4%
LONG 8.8%
TAGS 0.0%
FIELDS 6.7%
PERIODICALS 15.0%
COMMENTS 0.0%
Other 9.0%
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 1,325 19.4% 196 14.8% 13 73.2 356.8
EXACT AUTHOR 8 0.1% 0 0.0% 116 92.5 44.1
CORPORATE AUTHOR 43 0.6% 19 44.2% 5 147.1 391.9
EXACT CORPORATE 24 0.4% 9 37.5% 6 75.2 188.9
TITLE WORD 2,293 33.6% 586 25.6% 7 624.7 11154.9
EXACT TITLE/SERI 985 14.5% 230 23.3% 2 41.7 313.9
EXACT JOURNAL 1 0.0% 1 100% 0 0.0 0.0
SUBJECT 56 0.8% 15 26.8% 38 2582.1 10552.4
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 64 0.9% 27 42.2% 11 85.9 203.5
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 20 0.3% 4 20.0% 6 48.6 77.1
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 5 0.1% 4 80.0% 1 1.0 0.0
PLACE OF PUBL. 2 0.0% 1 50.0% 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 704 10.3% 206 29.3% 4 207.6 2246.7
EXACT PE 119 1.7% 23 19.3% 6 12.2 17.2
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 1,165 17.1% 365 31.3% 2 5.3 15.2
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 395 6.2% 94 23.8% 3 16.8 42.5
Single 6,022 93.8% 1,498 24.9% 5 308.2 6974.4
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 3:42
Average session length (minutes:seconds) 6:53
Longest session recorded (minutes:seconds) 53:02
Average number of searches completed per session 3.1
Retrievals per search - median 3.0
Retrievals per search - average 80.2
Retrievals per search - standard deviation 433.7
Percent of searches completed with 0 results 33.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 487 40.2%
DISPLAY (excluding automatic displays) 272 22.5%
HELP 60 5.0%
EXPLAIN 60 5.0%
SET/RESET 57 4.7%
SHOW 4 0.3%
ADD ON (AND, OR, AND NOT) 8 0.7%
LOGON or LOGOFF 216 17.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 46 3.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 7.3%
SHORT 74.1%
LONG 2.0%
TAGS 14.3%
FIELDS 0.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.5%
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 32.7% 29 16.8% 12 44.1 72.6
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 182 34.4% 76 41.8% 10 81.6 270.0
EXACT TITLE 24 4.5% 15 62.5% 1 3.7 5.5
SUBJECT 134 25.3% 53 39.6% 10 257.0 979.2
EXACT SUBJECT 2 0.4% 1 50.0% 58 58.0 0.0
EXACT JOURNAL 10 1.9% 3 30.0% 228 556.6 642.3
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 0.2% 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 3 0.6% 1 33.3% 16 16.0 2.8
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 42 8.6% 16 38.1% 4 5.8 5.7
Single 445 91.4% 147 33.0% 18 132.7 553.1
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 5:47
Average session length (minutes:seconds) 9:46
Longest session recorded (minutes:seconds) 65:44
Average number of searches completed per session 3.8
Retrievals per search - median 4.0
Retrievals per search - average 83.3
Retrievals per search - standard deviation 437.6
Percent of searches completed with 0 results 36.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 299 37.6%
DISPLAY (excluding automatic displays) 274 34.5%
HELP 21 2.6%
EXPLAIN 18 2.3%
SET/RESET 32 4.0%
SHOW 3 0.4%
ADD ON (AND, OR, AND NOT) 12 1.5%
LOGON or LOGOFF 104 13.1%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 32 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 87.0%
LONG 4.4%
TAGS 0.0%
FIELDS 2.7%
PERIODICALS 2.4%
COMMENTS 0.0%
Other 1.5%
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 59 18.7% 19 32.2% 9 15.9 21.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 2 0.6% 1 50.0% 1 1.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 50 15.9% 17 34.0% 17 49.5 94.2
EXACT TITLE 1 0.3% 1 100% 0 0.0 0.0
SUBJECT 172 54.6% 71 41.3% 35 122.4 267.8
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 5 1.6% 2 40.0% 3,126 3332.7 3066.2
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 10 3.2% 4 40.0% 92 145.2 177.2
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.3% 0 0.0% 379 379.0 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 5 1.6% 3 60.0% 51 50.5 65.8
EXACT PE 7 2.2% 0 0.0% 5 8.1 10.1
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 3 1.0% 0 0.0% 8 10.7 9.3
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 16 5.4% 8 50.0% 6 53.1 131.8
Single 283 94.6% 102 36.0% 22 139.3 566.9
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 4:08
Average session length (minutes:seconds) 5:05
Longest session recorded (minutes:seconds) 18:11
Average number of searches completed per session 1.8
Retrievals per search - median 1.0
Retrievals per search - average 31.3
Retrievals per search - standard deviation 116.4
Percent of searches completed with 0 results 37.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 66 30.7%
DISPLAY (excluding automatic displays) 39 18.1%
HELP 22 10.2%
EXPLAIN 18 8.4%
SET/RESET 13 6.0%
SHOW 1 0.5%
ADD ON (AND, OR, AND NOT) 1 0.5%
LOGON or LOGOFF 48 22.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 7 3.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.3%
SHORT 89.5%
LONG 5.3%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
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 21 30.9% 8 38.1% 36 40.7 30.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 32 47.1% 10 31.3% 3 48.7 180.8
EXACT TITLE 1 1.5% 0 0.0% 1 1.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 11 16.2% 6 54.5% 1 91.6 190.5
EXACT SUBJECT 3 4.4% 2 66.7% 36 36.0 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 2 3.0% 1 50.0% 1 1.0 0.0
Single 64 97.0% 24 37.5% 9 52.3 147.6
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 1:56
Average session length (minutes:seconds) 2:53
Longest session recorded (minutes:seconds) 13:36
Average number of searches completed per session 0.5
Retrievals per search - median 0.0
Retrievals per search - average 0.6
Retrievals per search - standard deviation 1.3
Percent of searches completed with 0 results 80.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5 12.5%
DISPLAY (excluding automatic displays) 1 2.5%
HELP 5 12.5%
EXPLAIN 4 10.0%
SET/RESET 0 0.0%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 22 55.0%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 3 7.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 100%
LONG 0.0%
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 0 0.0% 0 0.0% 0 0.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 0 0.0% 0 0.0% 0 0.0 0.0
EXACT TITLE 1 20.0% 1 100% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 4 80.0% 3 75.0% 3 3.0 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 5 100% 4 80.0% 3 3.0 0.0
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 3:26
Average session length (minutes:seconds) 7:05
Longest session recorded (minutes:seconds) 34:44
Average number of searches completed per session 2.5
Retrievals per search - median 2.0
Retrievals per search - average 69.1
Retrievals per search - standard deviation 230.3
Percent of searches completed with 0 results 37.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 103 28.7%
DISPLAY (excluding automatic displays) 93 25.9%
HELP 39 10.9%
EXPLAIN 29 8.1%
SET/RESET 3 0.8%
SHOW 3 0.8%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 74 20.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 15 4.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 82.2%
LONG 13.6%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 4.2%
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 12 10.3% 3 25.0% 8 29.4 55.8
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 28 24.1% 12 42.9% 14 107.6 383.2
EXACT TITLE 3 2.6% 0 0.0% 2 4.7 4.6
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 40 34.5% 11 27.5% 14 149.2 309.4
EXACT SUBJECT 18 15.5% 11 61.1% 44 113.0 102.9
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 13 11.2% 3 23.1% 8 11.0 9.3
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 2 1.7% 2 100% 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 13 12.6% 3 23.1% 8 11.0 9.3
Single 90 87.4% 36 40.0% 14 129.8 306.8
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 13:54
Average session length (minutes:seconds) 14:23
Longest session recorded (minutes:seconds) 67:40
Average number of searches completed per session 5.1
Retrievals per search - median 2.0
Retrievals per search - average 14.2
Retrievals per search - standard deviation 37.4
Percent of searches completed with 0 results 26.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 163 33.8%
DISPLAY (excluding automatic displays) 236 49.0%
HELP 7 1.5%
EXPLAIN 5 1.0%
SET/RESET 9 1.9%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 9 1.9%
LOGON or LOGOFF 51 10.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 2 0.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.7%
SHORT 42.0%
LONG 57.3%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
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 5 2.2% 2 40.0% 13 61.0 89.3
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 79 35.3% 25 31.6% 5 25.0 38.1
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 89 39.7% 17 19.1% 2 12.5 41.8
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 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 48 21.4% 13 27.1% 3 10.7 28.3
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 0 0.0% 0 0.0% 0 0.0 0.0
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 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
PERIODICAL 3 1.3% 2 66.7% 22 22.0 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 61 37.4% 16 26.2% 2 9.1 25.2
Single 102 62.6% 27 26.5% 5 26.8 50.4
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 24.6%
2. First word of command is invalid 20.1%
3. FIND command with invalid index name 8.3%
4. Z39.50 host unable to process search 5.2%
5. DISPLAY command contains invalid word 3.9%
6. PS command - no previous screen 2.0%
7. Index invalid in current database 1.9%
8. Search term missing from search command 1.8%
9. DISPLAY command - no FIND results 1.2%
10. Valid command at an inappropriate time 1.1%
11. All others 30.1%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 22.5%
2. LOCATE (Z39.50 DBS) 16.2%
3. FIND (Z39.50 DBS) 9.2%
4. INDEXES (RCAT DB) 5.8%
5. FORM (RCAT DB) 4.0%
6. COMMANDS (Z39.50 DBS) 4.0%
7. DATABASES 3.5%
8. GUIDE (Z39.50 non-A&I DBS) 2.9%
9. INDEXES (ANTH DB) 2.9%
10. G971 2.9%
11. All others 26.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.3%
2. First word of command is invalid 19.8%
3. FIND command with invalid index name 11.0%
4. DISPLAY command-complete in one screen 6.5%
5. FIND command with zero results 5.6%
6. DISPLAY command - middle of >1 screen 4.8%
7. F/BR with index invalid in current DB 3.7%
8. FIND command retrieves 1 book 3.4%
9. MELVYL system could not process command 3.1%
10. DISPLAY command-first of >1 screen 3.1%
11. All others 14.7%
Ten most frequent SHOW requests:
1. HISTORY 51.9%
2. SEARCH 33.3%
3. SETTINGS (Z39.50 DBS) 3.7%
4. GLOSSARY 3.7%
5. SYSTEM NEWS 3.7%
6. LOCAL INFORMATION 3.7%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)