MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 09/01/00 through 09/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 570 600 1,170
Davis 101 3 104
Irvine 66 0 66
Los Angeles 10 181 191
Riverside 42 0 42
San Diego 67 86 153
San Francisco 12 0 12
Santa Barbara 123 101 224
Santa Cruz 31 26 57
Other - UC 2 58 60
Other-Network UC n/a 402 402
_______ ______ _____
1,024 1,457 2,481
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 30 127 957
2-4 a.m. 4 10 66
4-6 a.m. 9 32 463
6-8 a.m. 26 154 1,112
8-10 a.m. 246 690 4,948
10-12 a.m. 488 1,248 12,441
12-2 p.m. 483 1,295 10,351
2-4 p.m. 630 1,748 16,210
4-6 p.m. 370 1,065 10,123
6-8 p.m. 111 374 5,594
8-10 p.m. 57 199 3,135
10-12 p.m. 27 90 1,092
__________ __________ __________ _________________
Total: 2,481 7,032 66,492
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,904 1,662 3,566
Davis 207 7 214
Irvine 177 0 177
Los Angeles 76 392 468
Riverside 117 0 117
San Diego 193 207 400
San Francisco 31 0 31
Santa Barbara 533 389 922
Santa Cruz 70 95 165
Other - UC 1 171 172
Other-Network UC n/a 800 800
_______ ______ _____
3,309 3,723 7,032
Number of FIND commands by database
RLIN Bibliographic File 3,844
Anthropological Literature 1,054
Avery Index to Architectural Per. 1,476
History of Science & Technology 140
Index to Foreign Legal Periodical 19
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 203
English Short Title Catalogue 296
Total number of FIND commands 7,032
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 19,870 16,660 36,530
Davis 1,445 13 1,458
Irvine 1,906 0 1,906
Los Angeles 532 3,333 3,865
Riverside 911 0 911
San Diego 1,436 1,281 2,717
San Francisco 690 0 690
Santa Barbara 5,127 5,017 10,144
Santa Cruz 788 758 1,546
Other - UC 41 1,676 1,717
Other-Network UC n/a 5,008 5,008
_______ ______ _____
32,746 33,746 66,492
Number of Records Displayed by database
RLIN Bibliographic File 35,078
Anthropological Literature 8,987
Avery Index to Architectural Per. 15,772
History of Science & Technology 1,338
Index to Foreign Legal Periodical 49
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,598
English Short Title Catalogue 3,670
Total number of Records Displayed 66,492
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,529 61.6%
Anthropological Literature 370 14.9%
Avery Index to Architectural Per. 360 14.5%
History of Science & Technology 56 2.3%
Index to Foreign Legal Periodical 8 0.3%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 75 3.0%
English Short Title Catalogue 83 3.3%
Percent of searches done in the RCAT database 54.7%
Percent of searches done in the ANTH database 15.0%
Percent of searches done in the ARCH database 21.0%
Percent of searches done in the HSCI database 2.0%
Percent of searches done in the FLEG database 0.3%
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 2.9%
Percent of searches done in the ESTC database 4.2%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.0
Standard deviation in seconds 8.7
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) 12:14
Average session length (minutes:seconds) 14:27
Longest session recorded (minutes:seconds) 506:49
Average number of searches completed per session 2.5
Retrievals per search - median 3.0
Retrievals per search - average 175.6
Retrievals per search - standard deviation 2631.9
Percent of searches completed with 0 results 24.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,594 30.8%
DISPLAY (excluding automatic displays) 4,775 40.9%
HELP 54 0.5%
EXPLAIN 110 0.9%
SET/RESET 1,021 8.7%
SHOW 56 0.5%
ADD ON (AND, OR, AND NOT) 250 2.1%
LOGON or LOGOFF 1,399 12.0%
COMMENT 0 0.0%
USE 5 0.0%
OTHER 410 3.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 7.4%
SHORT 55.6%
LONG 17.9%
TAGS 0.0%
FIELDS 2.8%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 11.8%
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 1,189 30.1% 196 16.5% 17 277.4 2628.0
EXACT AUTHOR 27 0.7% 6 22.2% 42 39.7 36.9
CORPORATE AUTHOR 56 1.4% 24 42.9% 16 210.7 714.9
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 1,488 37.7% 421 28.3% 5 248.1 4142.8
EXACT TITLE/SERI 557 14.1% 137 24.6% 3 117.3 944.7
EXACT JOURNAL 10 0.3% 3 30.0% 1 7.9 11.7
SUBJECT 136 3.4% 30 22.1% 15 595.0 2799.6
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 40 1.0% 17 42.5% 6 141.8 484.9
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
FORM 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 7 0.2% 3 42.9% 10 17.0 18.9
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 1 0.0% 0 0.0% 23 23.0 0.0
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PLACE OF PUBL. 5 0.1% 1 20.0% 106 106.0 121.2
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 114 2.9% 34 29.8% 5 33.2 155.7
EXACT PE 29 0.7% 8 27.6% 2 13.4 27.8
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 292 7.4% 82 28.1% 2 6.0 15.3
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 378 10.6% 84 22.2% 4 16.5 36.6
Single 3,191 89.4% 793 24.8% 8 274.6 3317.0
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 4:33
Average session length (minutes:seconds) 10:35
Longest session recorded (minutes:seconds) 338:40
Average number of searches completed per session 2.8
Retrievals per search - median 3.0
Retrievals per search - average 98.3
Retrievals per search - standard deviation 787.4
Percent of searches completed with 0 results 31.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,027 39.2%
DISPLAY (excluding automatic displays) 677 25.9%
HELP 103 3.9%
EXPLAIN 61 2.3%
SET/RESET 138 5.3%
SHOW 4 0.2%
ADD ON (AND, OR, AND NOT) 27 1.0%
LOGON or LOGOFF 477 18.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 104 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.0%
SHORT 81.2%
LONG 8.6%
TAGS 0.0%
FIELDS 1.6%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 1.1%
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 460 41.4% 100 21.7% 11 35.1 82.5
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 294 26.5% 114 38.8% 9 67.0 215.6
EXACT TITLE 10 0.9% 6 60.0% 1 1.3 0.5
SUBJECT 257 23.2% 97 37.7% 18 487.9 1963.1
EXACT SUBJECT 9 0.8% 8 88.9% 2 2.0 0.0
EXACT JOURNAL 6 0.5% 4 66.7% 50 50.0 56.6
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 5 0.5% 1 20.0% 49 75.3 82.6
EXACT PE 3 0.3% 0 0.0% 3 7.0 6.9
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 66 5.9% 21 31.8% 3 4.1 4.5
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 83 8.1% 31 37.3% 3 7.8 25.3
Single 944 91.9% 289 30.6% 14 156.5 994.5
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 8:31
Average session length (minutes:seconds) 12:22
Longest session recorded (minutes:seconds) 120:50
Average number of searches completed per session 4.1
Retrievals per search - median 4.0
Retrievals per search - average 219.7
Retrievals per search - standard deviation 2125.0
Percent of searches completed with 0 results 36.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,405 38.0%
DISPLAY (excluding automatic displays) 1,199 32.4%
HELP 118 3.2%
EXPLAIN 110 3.0%
SET/RESET 121 3.3%
SHOW 20 0.5%
ADD ON (AND, OR, AND NOT) 71 1.9%
LOGON or LOGOFF 510 13.8%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 142 3.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 86.8%
LONG 5.5%
TAGS 0.0%
FIELDS 2.1%
PERIODICALS 3.2%
COMMENTS 0.0%
Other 0.8%
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 115 7.8% 50 43.5% 11 29.4 69.9
EXACT AUTHOR 1 0.1% 1 100% 0 0.0 0.0
CORPORATE AUTHOR 7 0.5% 6 85.7% 5 5.0 0.0
EXACT CORPORATE 5 0.3% 5 100% 0 0.0 0.0
TITLE WORD 289 19.6% 108 37.4% 11 186.8 826.4
EXACT TITLE 9 0.6% 7 77.8% 1 1.0 0.0
SUBJECT 880 59.8% 302 34.3% 25 472.6 3342.0
EXACT SUBJECT 7 0.5% 5 71.4% 62 62.0 79.2
EXACT JOURNAL 60 4.1% 33 55.0% 128 401.0 609.4
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 2 0.1% 1 50.0% 5 5.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 34 2.3% 1 2.9% 67 237.1 382.2
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 29 2.0% 8 27.6% 20 28.2 29.9
EXACT PE 13 0.9% 10 76.9% 3 6.3 6.7
RPE 8 0.5% 4 50.0% 8 11.3 6.5
XRP 2 0.1% 2 100% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 10 0.7% 1 10.0% 52 78.8 41.3
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 59 4.2% 17 28.8% 51 191.0 349.5
Single 1,345 95.8% 510 37.9% 18 374.1 2811.8
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 4:04
Average session length (minutes:seconds) 9:27
Longest session recorded (minutes:seconds) 58:40
Average number of searches completed per session 2.5
Retrievals per search - median 1.0
Retrievals per search - average 180.8
Retrievals per search - standard deviation 1572.1
Percent of searches completed with 0 results 42.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 139 31.8%
DISPLAY (excluding automatic displays) 100 22.9%
HELP 37 8.5%
EXPLAIN 34 7.8%
SET/RESET 11 2.5%
SHOW 1 0.2%
ADD ON (AND, OR, AND NOT) 1 0.2%
LOGON or LOGOFF 90 20.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 24 5.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
SHORT 90.8%
LONG 1.5%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 2.3%
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 51 35.7% 22 43.1% 30 37.4 38.2
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 30 21.0% 12 40.0% 4 128.4 361.8
EXACT TITLE 4 2.8% 2 50.0% 1 1.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 53 37.1% 23 43.4% 46 722.4 3372.3
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 2 1.4% 0 0.0% 117 116.5 163.3
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 2.1% 1 33.3% 8 8.0 9.9
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 4 2.9% 2 50.0% 8 8.0 9.9
Single 135 97.1% 56 41.5% 30 320.1 2087.9
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 2:18
Average session length (minutes:seconds) 4:02
Longest session recorded (minutes:seconds) 13:06
Average number of searches completed per session 2.4
Retrievals per search - median 0.0
Retrievals per search - average 3.1
Retrievals per search - standard deviation 4.6
Percent of searches completed with 0 results 52.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 19 34.5%
DISPLAY (excluding automatic displays) 9 16.4%
HELP 5 9.1%
EXPLAIN 2 3.6%
SET/RESET 1 1.8%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 15 27.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 4 7.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.1%
SHORT 90.9%
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 13 68.4% 6 46.2% 6 7.1 5.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 2 10.5% 2 100% 0 0.0 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 4 21.1% 2 50.0% 5 4.5 3.5
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 19 100% 10 52.6% 6 6.6 4.8
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 3:56
Average session length (minutes:seconds) 8:14
Longest session recorded (minutes:seconds) 35:50
Average number of searches completed per session 2.7
Retrievals per search - median 3.0
Retrievals per search - average 182.8
Retrievals per search - standard deviation 575.3
Percent of searches completed with 0 results 35.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 190 33.6%
DISPLAY (excluding automatic displays) 120 21.2%
HELP 46 8.1%
EXPLAIN 36 6.4%
SET/RESET 12 2.1%
SHOW 2 0.4%
ADD ON (AND, OR, AND NOT) 13 2.3%
LOGON or LOGOFF 124 21.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 22 3.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.3%
SHORT 78.6%
LONG 14.5%
TAGS 0.0%
FIELDS 0.6%
PERIODICALS 1.3%
COMMENTS 0.0%
Other 3.8%
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 35 18.2% 8 22.9% 5 19.1 37.6
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 60 31.3% 28 46.7% 13 202.3 302.3
EXACT TITLE 1 0.5% 1 100% 0 0.0 0.0
ABSTRACT 1 0.5% 1 100% 0 0.0 0.0
SUBJECT 77 40.1% 27 35.1% 106 537.5 1044.2
EXACT SUBJECT 12 6.3% 6 50.0% 406 330.2 259.2
EXACT JOURNAL 3 1.6% 1 33.3% 373 373.0 523.3
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 2 1.0% 0 0.0% 92 91.5 47.4
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 0.5% 0 0.0% 3 3.0 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 1.1% 0 0.0% 92 91.5 47.4
Single 188 98.9% 72 38.3% 17 313.9 735.2
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 8:43
Average session length (minutes:seconds) 11:55
Longest session recorded (minutes:seconds) 93:02
Average number of searches completed per session 3.5
Retrievals per search - median 8.0
Retrievals per search - average 102.3
Retrievals per search - standard deviation 351.9
Percent of searches completed with 0 results 22.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 270 28.8%
DISPLAY (excluding automatic displays) 401 42.8%
HELP 11 1.2%
EXPLAIN 23 2.5%
SET/RESET 39 4.2%
SHOW 3 0.3%
ADD ON (AND, OR, AND NOT) 26 2.8%
LOGON or LOGOFF 135 14.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 29 3.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 7.3%
SHORT 50.4%
LONG 41.0%
TAGS 0.2%
FIELDS 0.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.4%
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 7 1.9% 1 14.3% 140 167.7 128.4
EXACT SUBJECT 3 0.8% 2 66.7% 80 80.0 0.0
AUTHOR 73 19.3% 16 21.9% 14 52.1 155.9
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 176 46.6% 42 23.9% 14 159.8 431.6
EXACT TITLE 9 2.4% 3 33.3% 66 112.5 107.5
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 3 0.8% 0 0.0% 277 1132.0 1633.9
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 2 0.5% 0 0.0% 1 1.0 0.0
IMPRINT YEAR 67 17.7% 13 19.4% 4 15.1 27.7
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 1 0.3% 0 0.0% 1 1.0 0.0
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 28 7.4% 1 3.6% 48 70.0 89.1
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 9 2.4% 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 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 110 41.0% 17 15.5% 8 31.3 58.1
Single 158 59.0% 44 27.8% 43 232.0 538.3
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 13.8%
Ten most frequent errors:
1. First word of command is invalid 27.5%
2. NS command - no next screen 19.5%
3. Max. # of ports to a Z39 db are in use 11.2%
4. FIND command with invalid index name 9.4%
5. Index invalid in current database 3.1%
6. PS command - no previous screen 2.1%
7. DISPLAY command contains invalid word 2.0%
8. Valid command at an inappropriate time 1.8%
9. Z39.50 host unable to process search 1.7%
10. Search term missing from search command 1.1%
11. All others 20.7%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 18.6%
2. LOCATE (Z39.50 DBS) 18.1%
3. INDEXES (RCAT DB) 7.2%
4. LOCATE (Z39.50 DBS) 6.1%
5. FIND (Z39.50 DBS) 5.6%
6. GUIDE (Z39.50 non-A&I DBS) 5.3%
7. COMMANDS (Z39.50 DBS) 4.3%
8. Unrecognized term 4.0%
9. INDEXES (ARCH DB) 2.9%
10. G960 2.4%
11. All others 25.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.4%
2. First word of command is invalid 17.3%
3. FIND command with invalid index name 10.8%
4. DISPLAY command-complete in one screen 8.9%
5. FIND command with zero results 6.0%
6. F/BR with index invalid in current DB 5.2%
7. DISPLAY command - middle of >1 screen 4.0%
8. FIND command retrieves 1 book 2.1%
9. FIND command retrieves >1 book 2.1%
10. DISPLAY command-first of >1 screen 2.1%
11. All others 12.9%
Ten most frequent SHOW requests:
1. HISTORY 69.8%
2. SEARCH 22.1%
3. GLOSSARY 3.5%
4. SETTINGS (Z39.50 DBS) 2.3%
5. SYSTEM NEWS 1.2%
6. PUBLICATIONS 1.2%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)