MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 09/01/01 through 09/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 395 352 747
Davis 49 0 49
Irvine 62 0 62
Los Angeles 8 72 80
Riverside 13 0 13
San Diego 20 15 35
San Francisco 25 0 25
Santa Barbara 50 16 66
Santa Cruz 28 5 33
Other - UC 0 23 23
Other-Network UC n/a 133 133
_______ ______ _____
650 616 1,266
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 10 313
2-4 a.m. 1 1 0
4-6 a.m. 5 10 42
6-8 a.m. 38 70 1,068
8-10 a.m. 110 245 1,988
10-12 a.m. 235 568 5,447
12-2 p.m. 243 758 6,061
2-4 p.m. 358 1,196 9,953
4-6 p.m. 187 579 4,468
6-8 p.m. 44 173 1,577
8-10 p.m. 23 43 363
10-12 p.m. 18 65 811
__________ __________ __________ _________________
Total: 1,266 3,718 32,091
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,566 913 2,479
Davis 96 0 96
Irvine 162 0 162
Los Angeles 16 170 186
Riverside 20 0 20
San Diego 42 26 68
San Francisco 29 0 29
Santa Barbara 122 45 167
Santa Cruz 218 31 249
Other - UC 0 48 48
Other-Network UC n/a 214 214
_______ ______ _____
2,271 1,447 3,718
Number of FIND commands by database
RLIN Bibliographic File 2,266
Anthropological Literature 374
Avery Index to Architectural Per. 769
History of Science & Technology 54
Index to Foreign Legal Periodical 34
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 47
English Short Title Catalogue 174
Total number of FIND commands 3,718
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,382 10,455 20,837
Davis 946 0 946
Irvine 1,472 0 1,472
Los Angeles 95 1,616 1,711
Riverside 74 0 74
San Diego 125 428 553
San Francisco 692 0 692
Santa Barbara 1,049 364 1,413
Santa Cruz 1,647 469 2,116
Other - UC 0 328 328
Other-Network UC n/a 1,949 1,949
_______ ______ _____
16,482 15,609 32,091
Number of Records Displayed by database
RLIN Bibliographic File 18,460
Anthropological Literature 3,493
Avery Index to Architectural Per. 6,159
History of Science & Technology 593
Index to Foreign Legal Periodical 72
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 279
English Short Title Catalogue 3,035
Total number of Records Displayed 32,091
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 777 61.4%
Anthropological Literature 168 13.3%
Avery Index to Architectural Per. 206 16.3%
History of Science & Technology 30 2.4%
Index to Foreign Legal Periodical 8 0.6%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 23 1.8%
English Short Title Catalogue 54 4.3%
Percent of searches done in the RCAT database 60.9%
Percent of searches done in the ANTH database 10.1%
Percent of searches done in the ARCH database 20.7%
Percent of searches done in the HSCI database 1.5%
Percent of searches done in the FLEG database 0.9%
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 4.7%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.7
Standard deviation in seconds 5.9
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) 13:17
Average session length (minutes:seconds) 18:07
Longest session recorded (minutes:seconds) 108:14
Average number of searches completed per session 2.9
Retrievals per search - median 2.0
Retrievals per search - average 329.4
Retrievals per search - standard deviation 7766.6
Percent of searches completed with 0 results 30.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,149 34.1%
DISPLAY (excluding automatic displays) 2,585 41.1%
HELP 25 0.4%
EXPLAIN 27 0.4%
SET/RESET 556 8.8%
SHOW 13 0.2%
ADD ON (AND, OR, AND NOT) 117 1.9%
LOGON or LOGOFF 606 9.6%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 217 3.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.7%
SHORT 60.2%
LONG 12.7%
TAGS 0.1%
FIELDS 5.3%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 7.4%
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 586 25.3% 113 19.3% 17 76.7 192.2
EXACT AUTHOR 23 1.0% 1 4.3% 62 57.3 8.5
CORPORATE AUTHOR 34 1.5% 12 35.3% 10 182.4 352.4
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 874 37.7% 240 27.5% 5 911.2 14406.5
EXACT TITLE/SERI 415 17.9% 165 39.8% 3 219.6 2557.4
EXACT JOURNAL 1 0.0% 0 0.0% 514 514.0 0.0
SUBJECT 35 1.5% 6 17.1% 29 473.0 1570.4
EXACT SUBJECT 1 0.0% 0 0.0% 51,218 51218.0 0.0
SERIES 14 0.6% 6 42.9% 29 51.9 65.5
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 10 0.4% 1 10.0% 33 57.1 61.2
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 3 0.1% 2 66.7% 1 1.0 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 67 2.9% 17 25.4% 5 38.3 115.6
EXACT PE 16 0.7% 6 37.5% 1 27.7 56.7
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 237 10.2% 124 52.3% 2 12.6 47.1
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 171 8.0% 45 26.3% 6 22.4 51.3
Single 1,968 92.0% 601 30.5% 6 540.2 9973.2
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 3:25
Average session length (minutes:seconds) 7:47
Longest session recorded (minutes:seconds) 38:07
Average number of searches completed per session 2.2
Retrievals per search - median 2.0
Retrievals per search - average 136.2
Retrievals per search - standard deviation 625.1
Percent of searches completed with 0 results 41.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 364 34.9%
DISPLAY (excluding automatic displays) 219 21.0%
HELP 60 5.8%
EXPLAIN 61 5.9%
SET/RESET 62 5.9%
SHOW 1 0.1%
ADD ON (AND, OR, AND NOT) 10 1.0%
LOGON or LOGOFF 216 20.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 49 4.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 85.8%
LONG 7.3%
TAGS 0.4%
FIELDS 1.8%
PERIODICALS 0.7%
COMMENTS 0.0%
Other 1.8%
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 93 24.5% 26 28.0% 11 32.7 106.6
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 141 37.2% 60 42.6% 6 79.2 308.9
EXACT TITLE 16 4.2% 12 75.0% 2 2.5 1.9
SUBJECT 112 29.6% 51 45.5% 49 671.5 1388.5
EXACT SUBJECT 5 1.3% 5 100% 0 0.0 0.0
EXACT JOURNAL 8 2.1% 4 50.0% 416 312.8 206.5
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 1 0.3% 0 0.0% 2 2.0 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 0.8% 3 100% 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 15 4.1% 9 60.0% 4 9.3 13.1
Single 349 95.9% 143 41.0% 13 246.2 826.9
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 4:55
Average session length (minutes:seconds) 13:39
Longest session recorded (minutes:seconds) 496:52
Average number of searches completed per session 3.7
Retrievals per search - median 5.0
Retrievals per search - average 95.1
Retrievals per search - standard deviation 699.8
Percent of searches completed with 0 results 32.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 730 34.7%
DISPLAY (excluding automatic displays) 693 33.0%
HELP 88 4.2%
EXPLAIN 75 3.6%
SET/RESET 55 2.6%
SHOW 21 1.0%
ADD ON (AND, OR, AND NOT) 39 1.9%
LOGON or LOGOFF 308 14.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 92 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.5%
SHORT 73.0%
LONG 9.8%
TAGS 0.0%
FIELDS 9.7%
PERIODICALS 6.0%
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 72 9.2% 30 41.7% 11 18.4 23.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 5 0.6% 5 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 135 17.2% 48 35.6% 7 66.3 161.7
EXACT TITLE 2 0.3% 0 0.0% 3 2.5 2.1
SUBJECT 459 58.6% 138 30.1% 17 186.3 1066.5
EXACT SUBJECT 16 2.0% 11 68.8% 5 50.8 106.3
EXACT JOURNAL 9 1.1% 6 66.7% 506 368.7 237.9
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 1 0.1% 0 0.0% 1 1.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 47 6.0% 2 4.3% 25 242.5 361.7
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 32 4.1% 6 18.8% 16 82.4 270.1
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 5 0.6% 4 80.0% 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 57 7.9% 8 14.0% 25 223.1 352.4
Single 669 92.1% 234 35.0% 12 135.4 915.8
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 3:23
Average session length (minutes:seconds) 6:40
Longest session recorded (minutes:seconds) 23:49
Average number of searches completed per session 1.8
Retrievals per search - median 3.0
Retrievals per search - average 249.6
Retrievals per search - standard deviation 1499.1
Percent of searches completed with 0 results 40.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 54 23.6%
DISPLAY (excluding automatic displays) 71 31.0%
HELP 31 13.5%
EXPLAIN 9 3.9%
SET/RESET 5 2.2%
SHOW 1 0.4%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 48 21.0%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 10 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 71.1%
LONG 28.9%
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 9 16.7% 3 33.3% 43 42.2 29.8
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 17 31.5% 7 41.2% 20 138.6 278.9
EXACT TITLE 2 3.7% 1 50.0% 7 7.0 0.0
EXACT JOURNAL 1 1.9% 1 100% 0 0.0 0.0
SUBJECT 25 46.3% 10 40.0% 13 788.9 2831.3
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 54 100% 22 40.7% 25 421.2 1941.0
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 4:29
Average session length (minutes:seconds) 7:02
Longest session recorded (minutes:seconds) 18:08
Average number of searches completed per session 4.3
Retrievals per search - median 0.5
Retrievals per search - average 57.7
Retrievals per search - standard deviation 228.8
Percent of searches completed with 0 results 50.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 34 46.6%
DISPLAY (excluding automatic displays) 8 11.0%
HELP 7 9.6%
EXPLAIN 3 4.1%
SET/RESET 1 1.4%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 16 21.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 4 5.5%
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 19 55.9% 8 42.1% 16 44.1 70.9
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 8 23.5% 4 50.0% 38 37.8 40.7
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 7 20.6% 5 71.4% 664 663.5 936.9
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 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 34 100% 17 50.0% 16 115.5 317.6
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 3:04
Average session length (minutes:seconds) 11:51
Longest session recorded (minutes:seconds) 83:11
Average number of searches completed per session 2.0
Retrievals per search - median 1.0
Retrievals per search - average 49.9
Retrievals per search - standard deviation 209.4
Percent of searches completed with 0 results 36.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 46 33.6%
DISPLAY (excluding automatic displays) 27 19.7%
HELP 8 5.8%
EXPLAIN 5 3.6%
SET/RESET 5 3.6%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 0.7%
LOGON or LOGOFF 36 26.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 9 6.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 74.4%
LONG 23.1%
TAGS 0.0%
FIELDS 2.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
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 15 31.9% 7 46.7% 12 16.0 15.3
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 9 19.1% 3 33.3% 2 79.0 178.1
EXACT TITLE 2 4.3% 1 50.0% 1 1.0 0.0
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 20 42.6% 5 25.0% 18 114.5 352.2
EXACT SUBJECT 1 2.1% 1 100% 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 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 2.2% 0 0.0% 2 2.0 0.0
Single 45 97.8% 17 37.8% 14 82.8 268.1
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 3:34
Average session length (minutes:seconds) 11:05
Longest session recorded (minutes:seconds) 115:10
Average number of searches completed per session 3.2
Retrievals per search - median 5.0
Retrievals per search - average 255.6
Retrievals per search - standard deviation 1742.6
Percent of searches completed with 0 results 19.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 165 32.5%
DISPLAY (excluding automatic displays) 186 36.7%
HELP 6 1.2%
EXPLAIN 9 1.8%
SET/RESET 13 2.6%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 9 1.8%
LOGON or LOGOFF 90 17.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 29 5.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 59.3%
LONG 28.8%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 8.8%
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 1 0.6% 0 0.0% 21 21.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 65 36.9% 16 24.6% 16 55.0 106.8
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 CORP. AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 66 37.5% 14 21.2% 3 599.7 3170.0
EXACT TITLE 1 0.6% 0 0.0% 420 420.0 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 36 20.5% 5 13.9% 327 327.1 209.4
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 5 2.8% 1 20.0% 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 1.1% 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 11 6.7% 6 54.5% 2 3.8 4.1
Single 154 93.3% 26 16.9% 16 347.0 2026.0
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. First word of command is invalid 30.9%
2. NS command - no next screen 20.8%
3. FIND command with invalid index name 12.2%
4. Index invalid in current database 2.9%
5. Max. # of ports to a Z39 db are in use 2.8%
6. DISPLAY command contains invalid word 2.4%
7. PS command - no previous screen 2.4%
8. Valid command at an inappropriate time 1.4%
9. Z39.50 host unable to process search 1.1%
10. Search term missing from search command 1.0%
11. All others 22.1%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 17.5%
2. LOCATE (Z39.50 DBS) 16.9%
3. INDEXES (ANTH DB) 11.1%
4. FIND (Z39.50 DBS) 9.5%
5. COMMANDS (Z39.50 DBS) 7.4%
6. Unrecognized term 5.3%
7. GUIDE (Z39.50 non-A&I DBS) 2.6%
8. DISPLAY (Z39.50 A&I DBS) 2.1%
9. FORM (RCAT DB) 2.1%
10. INDEXES (RCAT DB) 2.1%
11. All others 23.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.1%
2. First word of command is invalid 18.4%
3. FIND command with invalid index name 9.7%
4. DISPLAY command-complete in one screen 6.8%
5. DISPLAY command-first of >1 screen 6.5%
6. FIND command with zero results 6.0%
7. F/BR with index invalid in current DB 5.3%
8. DISPLAY command - middle of >1 screen 4.6%
9. PS command - no previous screen 2.4%
10. NS command - no next screen 1.9%
11. All others 13.3%
Ten most frequent SHOW requests:
1. HISTORY 55.6%
2. SEARCH 38.9%
3. Z39.50 NEWS 2.8%
4. LIBRARY LOCATIONS 2.8%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)