MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 10/01/01 through 10/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 397 415 812
Davis 95 17 112
Irvine 64 0 64
Los Angeles 0 200 200
Riverside 17 1 18
San Diego 25 12 37
San Francisco 30 0 30
Santa Barbara 77 31 108
Santa Cruz 6 8 14
Other - UC 3 22 25
Other-Network UC n/a 176 176
_______ ______ _____
714 882 1,596
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 365 56
2-4 a.m. 10 331 165
4-6 a.m. 3 77 90
6-8 a.m. 27 38 596
8-10 a.m. 141 339 3,175
10-12 a.m. 285 770 5,824
12-2 p.m. 319 870 8,025
2-4 p.m. 391 1,194 7,868
4-6 p.m. 254 852 18,279
6-8 p.m. 67 288 37,117
8-10 p.m. 58 200 90,206
10-12 p.m. 34 371 4,444
__________ __________ __________ _________________
Total: 1,596 5,695 175,845
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,593 1,177 2,770
Davis 171 28 199
Irvine 111 0 111
Los Angeles 0 1,704 1,704
Riverside 22 1 23
San Diego 62 17 79
San Francisco 46 0 46
Santa Barbara 250 90 340
Santa Cruz 20 28 48
Other - UC 3 54 57
Other-Network UC n/a 318 318
_______ ______ _____
2,278 3,417 5,695
Number of FIND commands by database
RLIN Bibliographic File 2,927
Anthropological Literature 631
Avery Index to Architectural Per. 487
History of Science & Technology 99
Index to Foreign Legal Periodical 31
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 122
English Short Title Catalogue 1,398
Total number of FIND commands 5,695
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,754 9,802 19,556
Davis 1,722 176 1,898
Irvine 823 0 823
Los Angeles 0 146,344 146,344
Riverside 266 17 283
San Diego 370 199 569
San Francisco 1,044 0 1,044
Santa Barbara 1,921 475 2,396
Santa Cruz 107 189 296
Other - UC 8 378 386
Other-Network UC n/a 2,250 2,250
_______ ______ _____
16,015 159,830 175,845
Number of Records Displayed by database
RLIN Bibliographic File 23,006
Anthropological Literature 5,118
Avery Index to Architectural Per. 4,013
History of Science & Technology 592
Index to Foreign Legal Periodical 372
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 549
English Short Title Catalogue 142,195
Total number of Records Displayed 175,845
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,004 62.9%
Anthropological Literature 250 15.7%
Avery Index to Architectural Per. 126 7.9%
History of Science & Technology 53 3.3%
Index to Foreign Legal Periodical 11 0.7%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 65 4.1%
English Short Title Catalogue 87 5.5%
Percent of searches done in the RCAT database 51.4%
Percent of searches done in the ANTH database 11.1%
Percent of searches done in the ARCH database 8.6%
Percent of searches done in the HSCI database 1.7%
Percent of searches done in the FLEG database 0.5%
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 2.1%
Percent of searches done in the ESTC database 24.5%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.9
Standard deviation in seconds 7.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:48
Average session length (minutes:seconds) 17:20
Longest session recorded (minutes:seconds) 226:14
Average number of searches completed per session 2.9
Retrievals per search - median 2.0
Retrievals per search - average 160.9
Retrievals per search - standard deviation 2197.6
Percent of searches completed with 0 results 29.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,725 31.5%
DISPLAY (excluding automatic displays) 3,771 43.5%
HELP 40 0.5%
EXPLAIN 72 0.8%
SET/RESET 669 7.7%
SHOW 20 0.2%
ADD ON (AND, OR, AND NOT) 202 2.3%
LOGON or LOGOFF 872 10.1%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 288 3.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.5%
SHORT 59.5%
LONG 12.9%
TAGS 0.3%
FIELDS 5.1%
PERIODICALS 3.3%
COMMENTS 0.0%
Other 10.5%
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 752 25.1% 157 20.9% 9 67.0 195.9
EXACT AUTHOR 28 0.9% 3 10.7% 79 99.6 127.0
CORPORATE AUTHOR 46 1.5% 12 26.1% 7 102.9 306.3
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 1,223 40.8% 354 28.9% 5 311.7 3298.7
EXACT TITLE/SERI 451 15.0% 164 36.4% 2 54.3 282.4
EXACT JOURNAL 1 0.0% 0 0.0% 15 15.0 0.0
SUBJECT 41 1.4% 7 17.1% 29 3479.8 11135.9
EXACT SUBJECT 5 0.2% 2 40.0% 1 2.0 1.7
SERIES 17 0.6% 6 35.3% 49 183.7 429.3
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 1 0.0% 0 0.0% 18 18.0 0.0
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 2 0.1% 2 100% 0 0.0 0.0
PLACE OF PUBL. 4 0.1% 4 100% 0 0.0 0.0
UNIFORM TITLE 1 0.0% 0 0.0% 11 11.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 74 2.5% 26 35.1% 4 29.1 110.9
EXACT PE 18 0.6% 5 27.8% 2 146.5 441.0
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 335 11.2% 145 43.3% 2 34.3 212.3
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 287 10.6% 83 28.9% 3 18.0 44.1
Single 2,419 89.4% 719 29.7% 6 267.7 2868.3
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 6:59
Average session length (minutes:seconds) 11:44
Longest session recorded (minutes:seconds) 117:29
Average number of searches completed per session 2.5
Retrievals per search - median 3.0
Retrievals per search - average 133.0
Retrievals per search - standard deviation 622.3
Percent of searches completed with 0 results 32.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 608 37.6%
DISPLAY (excluding automatic displays) 401 24.8%
HELP 61 3.8%
EXPLAIN 63 3.9%
SET/RESET 125 7.7%
SHOW 7 0.4%
ADD ON (AND, OR, AND NOT) 23 1.4%
LOGON or LOGOFF 263 16.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 64 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.4%
SHORT 83.4%
LONG 7.3%
TAGS 0.0%
FIELDS 3.4%
PERIODICALS 1.1%
COMMENTS 0.0%
Other 2.3%
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 170 26.4% 37 21.8% 11 28.8 69.5
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 271 42.1% 97 35.8% 7 113.5 354.1
EXACT TITLE 9 1.4% 4 44.4% 1 39.4 85.3
SUBJECT 168 26.1% 60 35.7% 21 401.1 1193.9
EXACT SUBJECT 4 0.6% 3 75.0% 48 48.0 0.0
EXACT JOURNAL 11 1.7% 5 45.5% 1,029 934.3 535.4
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 3 0.5% 1 33.3% 5,170 5170.0 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 8 1.2% 4 50.0% 2 4.8 6.2
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 36 5.9% 19 52.8% 2 5.8 7.8
Single 572 94.1% 173 30.2% 12 207.8 772.5
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 6:26
Average session length (minutes:seconds) 10:33
Longest session recorded (minutes:seconds) 93:08
Average number of searches completed per session 3.9
Retrievals per search - median 4.0
Retrievals per search - average 75.0
Retrievals per search - standard deviation 338.0
Percent of searches completed with 0 results 32.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 460 37.1%
DISPLAY (excluding automatic displays) 413 33.3%
HELP 35 2.8%
EXPLAIN 42 3.4%
SET/RESET 54 4.4%
SHOW 4 0.3%
ADD ON (AND, OR, AND NOT) 27 2.2%
LOGON or LOGOFF 158 12.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 46 3.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 79.1%
LONG 8.7%
TAGS 0.0%
FIELDS 8.7%
PERIODICALS 0.6%
COMMENTS 0.0%
Other 1.0%
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 53 10.8% 21 39.6% 14 41.5 49.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 3 0.6% 2 66.7% 1 1.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 85 17.2% 39 45.9% 16 44.4 77.1
EXACT TITLE 1 0.2% 1 100% 0 0.0 0.0
SUBJECT 318 64.5% 90 28.3% 22 137.8 484.0
EXACT SUBJECT 11 2.2% 7 63.6% 58 58.8 47.7
EXACT JOURNAL 2 0.4% 1 50.0% 15 15.0 0.0
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 15 3.0% 0 0.0% 18 156.2 381.7
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 1 0.2% 0 0.0% 9 9.0 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 4 0.8% 1 25.0% 54 75.7 86.6
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 33 7.2% 12 36.4% 18 123.9 325.2
Single 427 92.8% 138 32.3% 20 112.2 424.7
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 2:32
Average session length (minutes:seconds) 6:08
Longest session recorded (minutes:seconds) 38:37
Average number of searches completed per session 1.9
Retrievals per search - median 1.0
Retrievals per search - average 109.7
Retrievals per search - standard deviation 451.3
Percent of searches completed with 0 results 45.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 94 31.5%
DISPLAY (excluding automatic displays) 53 17.8%
HELP 17 5.7%
EXPLAIN 18 6.0%
SET/RESET 8 2.7%
SHOW 2 0.7%
ADD ON (AND, OR, AND NOT) 5 1.7%
LOGON or LOGOFF 88 29.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 13 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 92.3%
LONG 3.1%
TAGS 0.0%
FIELDS 3.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.5%
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 15 16.0% 6 40.0% 42 59.0 66.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 56 59.6% 20 35.7% 18 149.3 362.0
EXACT TITLE 3 3.2% 2 66.7% 1 1.0 0.0
EXACT JOURNAL 3 3.2% 3 100% 0 0.0 0.0
SUBJECT 13 13.8% 7 53.8% 116 745.5 1557.3
EXACT SUBJECT 2 2.1% 1 50.0% 482 482.0 0.0
SERIES 1 1.1% 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 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 1 1.1% 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 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 94 100% 41 43.6% 27 204.9 603.2
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 4:13
Average session length (minutes:seconds) 16:44
Longest session recorded (minutes:seconds) 146:00
Average number of searches completed per session 2.8
Retrievals per search - median 0.0
Retrievals per search - average 191.4
Retrievals per search - standard deviation 698.5
Percent of searches completed with 0 results 51.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 31 31.6%
DISPLAY (excluding automatic displays) 27 27.6%
HELP 9 9.2%
EXPLAIN 4 4.1%
SET/RESET 1 1.0%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 21 21.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 5 5.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 96.8%
LONG 0.0%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 3.2%
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 1 3.2% 0 0.0% 55 55.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 7 22.6% 3 42.9% 1 154.0 306.0
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 22 71.0% 12 54.5% 98 526.3 1184.4
EXACT SUBJECT 1 3.2% 1 100% 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 0 0.0% 0 0.0% 0 0.0 0.0
Single 31 100% 16 51.6% 55 395.6 979.3
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 2:06
Average session length (minutes:seconds) 4:40
Longest session recorded (minutes:seconds) 21:21
Average number of searches completed per session 1.9
Retrievals per search - median 1.0
Retrievals per search - average 122.9
Retrievals per search - standard deviation 475.7
Percent of searches completed with 0 results 43.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 121 30.3%
DISPLAY (excluding automatic displays) 71 17.8%
HELP 23 5.8%
EXPLAIN 25 6.3%
SET/RESET 7 1.8%
SHOW 3 0.8%
ADD ON (AND, OR, AND NOT) 1 0.3%
LOGON or LOGOFF 116 29.1%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 32 8.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 79.8%
LONG 12.1%
TAGS 0.0%
FIELDS 4.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 4.0%
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 44 36.1% 18 40.9% 11 183.5 395.2
EXACT AUTHOR 1 0.8% 1 100% 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 22 18.0% 7 31.8% 2 45.6 161.7
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 51 41.8% 23 45.1% 12 340.5 877.6
EXACT SUBJECT 2 1.6% 2 100% 0 0.0 0.0
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 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 2 1.6% 2 100% 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 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 0.8% 0 0.0% 3 3.0 0.0
Single 120 99.2% 53 44.2% 7 223.6 626.1
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 11:42
Average session length (minutes:seconds) 15:51
Longest session recorded (minutes:seconds) 179:46
Average number of searches completed per session 16.0
Retrievals per search - median 282.0
Retrievals per search - average 1258.7
Retrievals per search - standard deviation 9868.4
Percent of searches completed with 0 results 6.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,394 67.5%
DISPLAY (excluding automatic displays) 410 19.9%
HELP 13 0.6%
EXPLAIN 27 1.3%
SET/RESET 68 3.3%
SHOW 2 0.1%
ADD ON (AND, OR, AND NOT) 4 0.2%
LOGON or LOGOFF 109 5.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 38 1.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.1%
SHORT 21.1%
LONG 19.6%
TAGS 0.9%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 53.4%
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 4 0.3% 1 25.0% 5 6.7 5.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 37 2.6% 8 21.6% 17 46.4 88.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 7 0.5% 0 0.0% 34 58.4 49.3
EXACT CORP. AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 29 2.0% 12 41.4% 7 19.9 35.7
EXACT TITLE 1 0.1% 0 0.0% 2 2.0 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 1 0.1% 0 0.0% 81 81.0 0.0
PUBLICATION TYPE 3 0.2% 0 0.0% 21 5665.0 9789.6
PUBLISHER 3 0.2% 1 33.3% 724 723.5 903.0
IMPRINT YEAR 5 0.4% 0 0.0% 5 5.4 5.0
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 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 2 0.1% 0 0.0% 1,309 1309.0 1842.7
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 1,321 93.0% 64 4.8% 411 1380.8 10381.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 6 0.4% 0 0.0% 1 1.0 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 0.1% 0 0.0% 579 578.5 75.7
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 29 2.1% 2 6.9% 21 123.5 289.7
Single 1,363 97.9% 82 6.0% 352 1368.8 10294.9
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. First word of command is invalid 25.7%
2. NS command - no next screen 20.2%
3. Max. # of ports to a Z39 db are in use 10.4%
4. FIND command with invalid index name 9.5%
5. Index invalid in current database 3.7%
6. DISPLAY command contains invalid word 3.1%
7. Z39.50 host unable to process search 3.0%
8. PS command - no previous screen 1.6%
9. Z39.50 host cannot process command 1.5%
10. Valid command at an inappropriate time 1.4%
11. All others 19.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 17.9%
2. GUIDE (Z39.50 A&I DBS) 14.7%
3. FIND (Z39.50 DBS) 10.0%
4. LOCATE (Z39.50 DBS) 8.8%
5. COMMANDS (Z39.50 DBS) 6.0%
6. Unrecognized term 5.2%
7. GUIDE (Z39.50 non-A&I DBS) 4.0%
8. INDEXES (RCAT DB) 4.0%
9. INDEXES (ESTC DB) 2.8%
10. FORM (RCAT DB) 1.6%
11. All others 25.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.6%
2. First word of command is invalid 16.5%
3. FIND command with invalid index name 11.4%
4. FIND command with zero results 8.5%
5. DISPLAY command-complete in one screen 7.3%
6. DISPLAY command-first of >1 screen 6.7%
7. DISPLAY command - middle of >1 screen 5.6%
8. F/BR with index invalid in current DB 3.6%
9. FIND command retrieves 1 book 3.1%
10. MELVYL system could not process command 2.2%
11. All others 11.6%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. SEARCH 23.7%
3. FORM NAMES (RCAT DB) 13.2%
4. SETTINGS (Z39.50 DBS) 5.3%
5. Z39.50 NEWS 2.6%
6. GLOSSARY 2.6%
7. 0432 2.6%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)