MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 05/01/01 through 05/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 242 750 992
Davis 141 6 147
Irvine 121 0 121
Los Angeles 3 138 141
Riverside 80 1 81
San Diego 63 41 104
San Francisco 8 0 8
Santa Barbara 84 65 149
Santa Cruz 41 3 44
Other - UC 1 82 83
Other-Network UC n/a 196 196
_______ ______ _____
784 1,282 2,066
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 45 347
2-4 a.m. 17 43 394
4-6 a.m. 8 11 47
6-8 a.m. 96 205 1,379
8-10 a.m. 205 532 4,602
10-12 a.m. 404 1,313 9,189
12-2 p.m. 398 1,295 9,583
2-4 p.m. 462 1,244 10,542
4-6 p.m. 255 739 5,187
6-8 p.m. 100 393 3,774
8-10 p.m. 83 184 1,806
10-12 p.m. 13 30 288
__________ __________ __________ _________________
Total: 2,066 6,034 47,138
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,085 1,807 2,892
Davis 291 7 298
Irvine 270 0 270
Los Angeles 5 318 323
Riverside 329 0 329
San Diego 170 73 243
San Francisco 15 0 15
Santa Barbara 413 195 608
Santa Cruz 368 6 374
Other - UC 0 230 230
Other-Network UC n/a 452 452
_______ ______ _____
2,946 3,088 6,034
Number of FIND commands by database
RLIN Bibliographic File 4,350
Anthropological Literature 836
Avery Index to Architectural Per. 310
History of Science & Technology 129
Index to Foreign Legal Periodical 15
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 237
English Short Title Catalogue 157
Total number of FIND commands 6,034
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,493 15,224 21,717
Davis 3,286 29 3,315
Irvine 2,665 0 2,665
Los Angeles 12 3,506 3,518
Riverside 718 0 718
San Diego 1,102 1,064 2,166
San Francisco 58 0 58
Santa Barbara 3,312 1,530 4,842
Santa Cruz 2,871 28 2,899
Other - UC 0 1,578 1,578
Other-Network UC n/a 3,662 3,662
_______ ______ _____
20,517 26,621 47,138
Number of Records Displayed by database
RLIN Bibliographic File 33,330
Anthropological Literature 6,324
Avery Index to Architectural Per. 2,582
History of Science & Technology 831
Index to Foreign Legal Periodical 12
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,961
English Short Title Catalogue 2,098
Total number of Records Displayed 47,138
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,458 70.6%
Anthropological Literature 308 14.9%
Avery Index to Architectural Per. 95 4.6%
History of Science & Technology 59 2.9%
Index to Foreign Legal Periodical 9 0.4%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 86 4.2%
English Short Title Catalogue 51 2.5%
Percent of searches done in the RCAT database 72.1%
Percent of searches done in the ANTH database 13.9%
Percent of searches done in the ARCH database 5.1%
Percent of searches done in the HSCI database 2.1%
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 3.9%
Percent of searches done in the ESTC database 2.6%
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 0.5
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 13:00
Average session length (minutes:seconds) 16:39
Longest session recorded (minutes:seconds) 317:37
Average number of searches completed per session 3.0
Retrievals per search - median 2.0
Retrievals per search - average 167.0
Retrievals per search - standard deviation 2571.6
Percent of searches completed with 0 results 31.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,094 35.7%
DISPLAY (excluding automatic displays) 4,528 39.5%
HELP 42 0.4%
EXPLAIN 64 0.6%
SET/RESET 1,083 9.5%
SHOW 29 0.3%
ADD ON (AND, OR, AND NOT) 256 2.2%
LOGON or LOGOFF 1,031 9.0%
COMMENT 0 0.0%
USE 3 0.0%
OTHER 323 2.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.7%
SHORT 55.4%
LONG 15.7%
TAGS 0.1%
FIELDS 5.6%
PERIODICALS 3.5%
COMMENTS 0.0%
Other 8.0%
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 1,234 28.1% 287 23.3% 14 91.9 439.7
EXACT AUTHOR 65 1.5% 26 40.0% 6 11.8 13.9
CORPORATE AUTHOR 45 1.0% 8 17.8% 25 236.6 585.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 1,456 33.1% 434 29.8% 6 467.0 4786.2
EXACT TITLE/SERI 772 17.6% 237 30.7% 3 122.3 979.1
EXACT JOURNAL 1 0.0% 0 0.0% 47 47.0 0.0
SUBJECT 64 1.5% 17 26.6% 12 1441.6 9582.8
EXACT SUBJECT 19 0.4% 14 73.7% 26 1673.4 3501.9
SERIES 47 1.1% 21 44.7% 4 85.1 275.0
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
FORM 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 16 0.4% 0 0.0% 21 51.1 51.0
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 57 1.3% 38 66.7% 1 1.0 0.0
PLACE OF PUBL. 1 0.0% 0 0.0% 8 8.0 0.0
UNIFORM TITLE 4 0.1% 1 25.0% 200 134.0 114.3
XOT 1 0.0% 0 0.0% 25 25.0 0.0
PERIODICAL 107 2.4% 40 37.4% 6 24.4 64.3
EXACT PE 23 0.5% 6 26.1% 6 187.5 587.6
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 482 11.0% 242 50.2% 1 5.2 17.7
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 321 7.9% 99 30.8% 6 18.5 45.1
Single 3,750 92.1% 1,173 31.3% 6 278.0 3328.0
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 3:25
Average session length (minutes:seconds) 7:00
Longest session recorded (minutes:seconds) 40:44
Average number of searches completed per session 2.7
Retrievals per search - median 2.0
Retrievals per search - average 106.1
Retrievals per search - standard deviation 656.4
Percent of searches completed with 0 results 36.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 816 39.4%
DISPLAY (excluding automatic displays) 491 23.7%
HELP 77 3.7%
EXPLAIN 89 4.3%
SET/RESET 128 6.2%
SHOW 8 0.4%
ADD ON (AND, OR, AND NOT) 20 1.0%
LOGON or LOGOFF 365 17.6%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 75 3.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 84.5%
LONG 9.1%
TAGS 0.3%
FIELDS 1.5%
PERIODICALS 0.6%
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 241 28.8% 58 24.1% 13 40.1 103.6
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 300 35.8% 108 36.0% 5 96.2 578.1
EXACT TITLE 23 2.7% 12 52.2% 1 54.6 138.5
SUBJECT 241 28.8% 115 47.7% 21 455.2 1460.9
EXACT SUBJECT 4 0.5% 3 75.0% 12 12.0 0.0
EXACT JOURNAL 12 1.4% 8 66.7% 1,600 1207.8 800.8
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 0.4% 2 66.7% 5 5.0 0.0
EXACT PE 2 0.2% 1 50.0% 2 2.0 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 12 1.4% 4 33.3% 3 4.1 2.9
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 23 2.8% 10 43.5% 6 13.5 19.8
Single 792 97.2% 291 36.7% 11 176.3 840.4
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 5:25
Average session length (minutes:seconds) 10:23
Longest session recorded (minutes:seconds) 111:46
Average number of searches completed per session 3.3
Retrievals per search - median 6.5
Retrievals per search - average 552.5
Retrievals per search - standard deviation 3417.2
Percent of searches completed with 0 results 30.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 298 36.1%
DISPLAY (excluding automatic displays) 289 35.0%
HELP 23 2.8%
EXPLAIN 18 2.2%
SET/RESET 43 5.2%
SHOW 2 0.2%
ADD ON (AND, OR, AND NOT) 12 1.5%
LOGON or LOGOFF 107 13.0%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 33 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.1%
SHORT 76.1%
LONG 21.1%
TAGS 0.0%
FIELDS 1.4%
PERIODICALS 0.3%
COMMENTS 0.0%
Other 0.0%
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 52 16.9% 18 34.6% 12 32.2 53.6
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 69 22.4% 28 40.6% 5 40.6 126.6
EXACT TITLE 1 0.3% 0 0.0% 120 120.0 0.0
SUBJECT 166 53.9% 47 28.3% 35 1339.3 5423.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 12 3.9% 3 25.0% 605 974.0 1051.4
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 0.3% 0 0.0% 10 10.0 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
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 0.3% 0 0.0% 2 2.0 0.0
EXACT PE 1 0.3% 0 0.0% 24 24.0 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 1.3% 3 75.0% 6 6.0 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 10 3.4% 8 80.0% 14 14.0 11.3
Single 288 96.6% 84 29.2% 22 838.3 4187.4
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 3:39
Average session length (minutes:seconds) 6:55
Longest session recorded (minutes:seconds) 41:36
Average number of searches completed per session 2.2
Retrievals per search - median 2.0
Retrievals per search - average 60.1
Retrievals per search - standard deviation 500.0
Percent of searches completed with 0 results 38.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 124 30.4%
DISPLAY (excluding automatic displays) 119 29.2%
HELP 23 5.6%
EXPLAIN 24 5.9%
SET/RESET 15 3.7%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 5 1.2%
LOGON or LOGOFF 83 20.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 15 3.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 92.5%
LONG 7.5%
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 32 25.8% 17 53.1% 8 15.0 17.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 54 43.5% 12 22.2% 5 153.0 870.4
EXACT TITLE 5 4.0% 4 80.0% 1 1.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 33 26.6% 15 45.5% 7 60.7 143.6
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 124 100% 48 38.7% 6 101.9 649.9
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 1:24
Average session length (minutes:seconds) 2:37
Longest session recorded (minutes:seconds) 6:08
Average number of searches completed per session 1.6
Retrievals per search - median 0.5
Retrievals per search - average 8.0
Retrievals per search - standard deviation 24.3
Percent of searches completed with 0 results 50.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 15 31.3%
DISPLAY (excluding automatic displays) 3 6.3%
HELP 6 12.5%
EXPLAIN 7 14.6%
SET/RESET 1 2.1%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 15 31.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 1 2.1%
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 2 14.3% 1 50.0% 7 7.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 7 50.0% 2 28.6% 2 20.8 39.8
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 5 35.7% 4 80.0% 1 1.0 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 14 100% 7 50.0% 2 16.0 33.6
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 3:57
Average session length (minutes:seconds) 7:15
Longest session recorded (minutes:seconds) 53:32
Average number of searches completed per session 2.8
Retrievals per search - median 0.0
Retrievals per search - average 85.9
Retrievals per search - standard deviation 320.8
Percent of searches completed with 0 results 50.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 237 37.4%
DISPLAY (excluding automatic displays) 112 17.7%
HELP 43 6.8%
EXPLAIN 57 9.0%
SET/RESET 16 2.5%
SHOW 7 1.1%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 142 22.4%
COMMENT 0 0.0%
USE 1 0.2%
OTHER 18 2.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 84.9%
LONG 6.9%
TAGS 0.0%
FIELDS 0.6%
PERIODICALS 0.6%
COMMENTS 0.0%
Other 5.0%
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 24 10.0% 11 45.8% 13 43.1 68.0
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 88 36.5% 44 50.0% 3 32.9 91.5
EXACT TITLE 9 3.7% 6 66.7% 2 1.7 0.6
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 102 42.3% 53 52.0% 45 175.8 350.4
EXACT SUBJECT 6 2.5% 3 50.0% 719 516.0 351.6
EXACT JOURNAL 9 3.7% 3 33.3% 1,148 1135.8 1223.9
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 1 0.4% 1 100% 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 1 0.4% 0 0.0% 24 24.0 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% 0 0.0% 1,366 1366.0 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 4 1.7% 2 50.0% 7 6.5 7.8
Single 233 98.3% 117 50.2% 14 175.5 442.0
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 7:31
Average session length (minutes:seconds) 10:46
Longest session recorded (minutes:seconds) 56:15
Average number of searches completed per session 3.1
Retrievals per search - median 5.0
Retrievals per search - average 217.0
Retrievals per search - standard deviation 2209.0
Percent of searches completed with 0 results 21.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 157 34.7%
DISPLAY (excluding automatic displays) 152 33.6%
HELP 9 2.0%
EXPLAIN 13 2.9%
SET/RESET 18 4.0%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 85 18.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 18 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 61.7%
LONG 35.6%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.1%
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 14 6.9% 5 35.7% 16 3113.9 9207.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 54 26.5% 11 20.4% 14 50.0 114.5
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 78 38.2% 15 19.2% 15 61.7 187.9
EXACT TITLE 13 6.4% 4 30.8% 1 1.2 0.4
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 27 13.2% 1 3.7% 17 47.0 77.2
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 3 1.5% 0 0.0% 5 4.3 1.2
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 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 15 7.4% 4 26.7% 6 6.5 4.3
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 47 29.9% 6 12.8% 9 31.9 64.3
Single 110 70.1% 28 25.5% 11 399.5 3053.7
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 25.2%
2. NS command - no next screen 20.9%
3. FIND command with invalid index name 12.0%
4. Index invalid in current database 3.9%
5. Max. # of ports to a Z39 db are in use 3.3%
6. Z39.50 host unable to process search 2.5%
7. DISPLAY command contains invalid word 2.2%
8. PS command - no previous screen 2.1%
9. Valid command at an inappropriate time 2.0%
10. Search term missing from search command 1.2%
11. All others 24.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 19.5%
2. GUIDE (Z39.50 A&I DBS) 18.0%
3. FIND (Z39.50 DBS) 8.8%
4. COMMANDS (Z39.50 DBS) 7.4%
5. Unrecognized term 5.5%
6. INDEXES (RCAT DB) 4.0%
7. INDEXES (ANTH DB) 3.7%
8. LOCATE (Z39.50 DBS) 2.9%
9. GUIDE (Z39.50 non-A&I DBS) 2.9%
10. DISPLAY (Z39.50 DBS) 2.2%
11. All others 25.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.5%
2. First word of command is invalid 19.4%
3. FIND command with zero results 10.3%
4. FIND command with invalid index name 8.9%
5. DISPLAY command-complete in one screen 6.5%
6. F/BR with index invalid in current DB 4.6%
7. FIND command retrieves 1 book 3.8%
8. DISPLAY command-first of >1 screen 3.8%
9. DISPLAY command - middle of >1 screen 2.2%
10. PS command - no previous screen 1.6%
11. All others 12.3%
Ten most frequent SHOW requests:
1. HISTORY 56.5%
2. SEARCH 32.6%
3. SETTINGS (Z39.50 DBS) 4.3%
4. SYSTEM NEWS 4.3%
5. GLOSSARY 2.2%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)