MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 10/01/00 through 10/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 396 664 1,060
Davis 151 5 156
Irvine 126 0 126
Los Angeles 10 217 227
Riverside 39 5 44
San Diego 56 36 92
San Francisco 10 0 10
Santa Barbara 136 124 260
Santa Cruz 59 19 78
Other - UC 16 54 70
Other-Network UC n/a 275 275
_______ ______ _____
999 1,399 2,398
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 21 151 1,111
2-4 a.m. 1 0 0
4-6 a.m. 5 7 7
6-8 a.m. 22 132 818
8-10 a.m. 254 563 5,227
10-12 a.m. 454 1,306 10,979
12-2 p.m. 477 1,154 9,008
2-4 p.m. 545 1,506 15,779
4-6 p.m. 373 1,027 8,933
6-8 p.m. 113 389 4,094
8-10 p.m. 84 299 2,700
10-12 p.m. 49 108 752
__________ __________ __________ _________________
Total: 2,398 6,642 59,408
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,230 1,964 3,194
Davis 296 15 311
Irvine 341 0 341
Los Angeles 29 509 538
Riverside 77 15 92
San Diego 184 68 252
San Francisco 36 0 36
Santa Barbara 483 421 904
Santa Cruz 109 41 150
Other - UC 13 179 192
Other-Network UC n/a 632 632
_______ ______ _____
2,798 3,844 6,642
Number of FIND commands by database
RLIN Bibliographic File 3,605
Anthropological Literature 1,349
Avery Index to Architectural Per. 732
History of Science & Technology 120
Index to Foreign Legal Periodical 61
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 443
English Short Title Catalogue 332
Total number of FIND commands 6,642
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,456 18,041 28,497
Davis 3,690 254 3,944
Irvine 2,778 0 2,778
Los Angeles 211 7,125 7,336
Riverside 643 30 673
San Diego 939 868 1,807
San Francisco 372 0 372
Santa Barbara 3,840 3,968 7,808
Santa Cruz 974 407 1,381
Other - UC 31 1,188 1,219
Other-Network UC n/a 3,593 3,593
_______ ______ _____
23,934 35,474 59,408
Number of Records Displayed by database
RLIN Bibliographic File 33,020
Anthropological Literature 10,698
Avery Index to Architectural Per. 7,393
History of Science & Technology 1,057
Index to Foreign Legal Periodical 259
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 3,951
English Short Title Catalogue 3,030
Total number of Records Displayed 59,408
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,324 55.2%
Anthropological Literature 486 20.3%
Avery Index to Architectural Per. 223 9.3%
History of Science & Technology 74 3.1%
Index to Foreign Legal Periodical 27 1.1%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 155 6.5%
English Short Title Catalogue 109 4.5%
Percent of searches done in the RCAT database 54.3%
Percent of searches done in the ANTH database 20.3%
Percent of searches done in the ARCH database 11.0%
Percent of searches done in the HSCI database 1.8%
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 6.7%
Percent of searches done in the ESTC database 5.0%
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 10.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:27
Average session length (minutes:seconds) 17:34
Longest session recorded (minutes:seconds) 415:05
Average number of searches completed per session 2.7
Retrievals per search - median 2.0
Retrievals per search - average 227.0
Retrievals per search - standard deviation 6100.5
Percent of searches completed with 0 results 28.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,420 32.8%
DISPLAY (excluding automatic displays) 4,272 40.9%
HELP 64 0.6%
EXPLAIN 115 1.1%
SET/RESET 830 7.9%
SHOW 42 0.4%
ADD ON (AND, OR, AND NOT) 185 1.8%
LOGON or LOGOFF 1,203 11.5%
COMMENT 0 0.0%
USE 2 0.0%
OTHER 308 2.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.3%
SHORT 51.7%
LONG 17.1%
TAGS 0.0%
FIELDS 3.5%
PERIODICALS 7.8%
COMMENTS 0.0%
Other 13.6%
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 985 26.1% 220 22.3% 16 173.8 1868.8
EXACT AUTHOR 84 2.2% 25 29.8% 11 57.3 120.3
CORPORATE AUTHOR 73 1.9% 32 43.8% 19 212.9 529.6
EXACT CORPORATE 2 0.1% 0 0.0% 9 9.0 11.3
TITLE WORD 1,216 32.2% 367 30.2% 7 681.6 12349.1
EXACT TITLE/SERI 752 19.9% 185 24.6% 2 68.0 724.6
EXACT JOURNAL 5 0.1% 5 100% 0 0.0 0.0
SUBJECT 105 2.8% 32 30.5% 16 519.7 2125.3
EXACT SUBJECT 6 0.2% 0 0.0% 2 30.5 47.0
SERIES 32 0.8% 13 40.6% 8 59.5 134.2
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
FORM 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 8 0.2% 1 12.5% 11 16.9 21.8
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 31 0.8% 11 35.5% 12 19.0 17.4
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 12 0.3% 11 91.7% 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 169 4.5% 60 35.5% 4 75.9 405.5
EXACT PE 36 1.0% 19 52.8% 14 20.0 28.3
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 265 7.0% 108 40.8% 2 12.1 37.6
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 362 10.7% 116 32.0% 5 21.5 50.1
Single 3,025 89.3% 847 28.0% 6 367.8 7809.9
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 4:31
Average session length (minutes:seconds) 9:54
Longest session recorded (minutes:seconds) 179:36
Average number of searches completed per session 2.8
Retrievals per search - median 3.0
Retrievals per search - average 209.3
Retrievals per search - standard deviation 1678.8
Percent of searches completed with 0 results 33.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,300 37.9%
DISPLAY (excluding automatic displays) 774 22.6%
HELP 174 5.1%
EXPLAIN 171 5.0%
SET/RESET 174 5.1%
SHOW 17 0.5%
ADD ON (AND, OR, AND NOT) 49 1.4%
LOGON or LOGOFF 642 18.7%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 128 3.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 85.2%
LONG 5.5%
TAGS 1.0%
FIELDS 1.5%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 2.0%
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 446 33.3% 101 22.6% 13 33.5 62.9
EXACT AUTHOR 5 0.4% 3 60.0% 39 39.0 0.0
TITLE WORD 352 26.3% 104 29.5% 8 119.7 559.2
EXACT TITLE 23 1.7% 12 52.2% 1 46.7 143.5
SUBJECT 428 32.0% 192 44.9% 17 963.2 3860.8
EXACT SUBJECT 17 1.3% 6 35.3% 7 465.1 1394.7
EXACT JOURNAL 16 1.2% 7 43.8% 56 679.3 1539.2
DATE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 2 0.1% 2 100% 0 0.0 0.0
PERIODICAL 13 1.0% 3 23.1% 8 41.0 61.3
EXACT PE 3 0.2% 0 0.0% 3 4.3 3.2
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 34 2.5% 19 55.9% 27 424.3 858.6
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 41 3.2% 14 34.1% 3 240.8 664.2
Single 1,257 96.8% 421 33.5% 13 327.9 2118.2
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 8:42
Average session length (minutes:seconds) 10:38
Longest session recorded (minutes:seconds) 70:59
Average number of searches completed per session 3.3
Retrievals per search - median 4.0
Retrievals per search - average 86.2
Retrievals per search - standard deviation 331.3
Percent of searches completed with 0 results 33.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 708 35.4%
DISPLAY (excluding automatic displays) 634 31.7%
HELP 78 3.9%
EXPLAIN 63 3.2%
SET/RESET 70 3.5%
SHOW 14 0.7%
ADD ON (AND, OR, AND NOT) 24 1.2%
LOGON or LOGOFF 315 15.8%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 91 4.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 82.5%
LONG 5.3%
TAGS 0.1%
FIELDS 2.0%
PERIODICALS 5.4%
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 83 11.3% 29 34.9% 8 16.8 25.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 2 0.3% 2 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 195 26.6% 71 36.4% 6 55.0 207.4
EXACT TITLE 2 0.3% 0 0.0% 524 523.5 738.9
SUBJECT 379 51.8% 120 31.7% 24 146.2 421.9
EXACT SUBJECT 13 1.8% 7 53.8% 5 124.2 260.8
EXACT JOURNAL 13 1.8% 5 38.5% 1,920 1503.5 1024.7
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 11 1.5% 0 0.0% 82 104.3 94.9
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 4 0.5% 2 50.0% 475 475.0 664.7
EXACT PE 24 3.3% 2 8.3% 41 101.0 117.9
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 6 0.8% 3 50.0% 64 72.7 34.8
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 22 3.1% 8 36.4% 73 92.4 88.8
Single 686 96.9% 225 32.8% 15 132.7 409.6
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 2:43
Average session length (minutes:seconds) 4:23
Longest session recorded (minutes:seconds) 16:26
Average number of searches completed per session 1.6
Retrievals per search - median 1.0
Retrievals per search - average 33.4
Retrievals per search - standard deviation 142.2
Percent of searches completed with 0 results 46.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 120 27.8%
DISPLAY (excluding automatic displays) 93 21.5%
HELP 37 8.6%
EXPLAIN 22 5.1%
SET/RESET 18 4.2%
SHOW 2 0.5%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 116 26.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 24 5.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 13.4%
SHORT 70.5%
LONG 11.6%
TAGS 0.0%
FIELDS 2.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.8%
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 34 28.3% 12 35.3% 9 21.4 22.8
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 27 22.5% 12 44.4% 5 105.1 255.9
EXACT TITLE 13 10.8% 9 69.2% 5 4.5 2.1
EXACT JOURNAL 1 0.8% 0 0.0% 2 2.0 0.0
SUBJECT 44 36.7% 22 50.0% 22 88.3 245.6
EXACT SUBJECT 1 0.8% 1 100% 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 120 100% 56 46.7% 9 62.6 190.7
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 1:07
Average session length (minutes:seconds) 3:54
Longest session recorded (minutes:seconds) 22:44
Average number of searches completed per session 2.3
Retrievals per search - median 1.0
Retrievals per search - average 147.8
Retrievals per search - standard deviation 655.9
Percent of searches completed with 0 results 47.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 61 35.1%
DISPLAY (excluding automatic displays) 22 12.6%
HELP 4 2.3%
EXPLAIN 21 12.1%
SET/RESET 6 3.4%
SHOW 5 2.9%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 43 24.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 12 6.9%
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 12 19.7% 2 16.7% 4 11.0 12.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 11 18.0% 3 27.3% 20 58.8 110.1
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 1 1.6% 1 100% 0 0.0 0.0
SUBJECT 37 60.7% 23 62.2% 7 602.4 1299.3
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 61 100% 29 47.5% 9 281.7 890.9
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 5:38
Average session length (minutes:seconds) 9:37
Longest session recorded (minutes:seconds) 82:39
Average number of searches completed per session 2.9
Retrievals per search - median 1.0
Retrievals per search - average 52.4
Retrievals per search - standard deviation 219.0
Percent of searches completed with 0 results 43.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 439 31.9%
DISPLAY (excluding automatic displays) 342 24.8%
HELP 137 9.9%
EXPLAIN 95 6.9%
SET/RESET 34 2.5%
SHOW 9 0.7%
ADD ON (AND, OR, AND NOT) 4 0.3%
LOGON or LOGOFF 254 18.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 63 4.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.2%
SHORT 81.3%
LONG 11.5%
TAGS 0.2%
FIELDS 1.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.0%
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 91 20.7% 28 30.8% 10 49.8 64.9
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 CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 103 23.4% 45 43.7% 6 34.7 159.8
EXACT TITLE 9 2.0% 4 44.4% 2 3.6 4.2
ABSTRACT 2 0.5% 1 50.0% 59 59.0 0.0
SUBJECT 207 47.0% 95 45.9% 28 115.4 326.1
EXACT SUBJECT 22 5.0% 15 68.2% 16 176.0 281.1
EXACT JOURNAL 4 0.9% 2 50.0% 1,225 1224.5 1276.3
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 2 0.5% 1 50.0% 1,357 1357.0 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 0.2% 1 100% 0 0.0 0.0
Single 438 99.8% 189 43.1% 10 93.1 285.7
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 7:20
Average session length (minutes:seconds) 10:25
Longest session recorded (minutes:seconds) 57:05
Average number of searches completed per session 3.0
Retrievals per search - median 3.0
Retrievals per search - average 404.3
Retrievals per search - standard deviation 4962.7
Percent of searches completed with 0 results 26.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 319 30.7%
DISPLAY (excluding automatic displays) 408 39.3%
HELP 21 2.0%
EXPLAIN 27 2.6%
SET/RESET 45 4.3%
SHOW 4 0.4%
ADD ON (AND, OR, AND NOT) 13 1.3%
LOGON or LOGOFF 184 17.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 18 1.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.9%
SHORT 52.8%
LONG 39.8%
TAGS 0.0%
FIELDS 0.0%
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 9 2.2% 4 44.4% 12 21.4 23.4
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 138 33.5% 45 32.6% 5 34.3 150.7
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 141 34.2% 34 24.1% 6 76.2 292.0
EXACT TITLE 12 2.9% 2 16.7% 15 54.5 124.0
UNIFORM TITLE 5 1.2% 0 0.0% 2 4.8 3.8
EXACT UNIFORM TI 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 8 1.9% 1 12.5% 83 137.7 194.4
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 72 17.5% 21 29.2% 2 3.1 3.1
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 4 1.0% 2 50.0% 44,266 44266.0 62550.7
INDEXED BY 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 4 1.0% 2 50.0% 64 64.0 0.0
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 10 2.4% 0 0.0% 93 1959.1 5037.9
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 9 2.2% 3 33.3% 20 28.2 26.4
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 94 29.6% 27 28.7% 3 19.4 60.4
Single 224 70.4% 60 26.8% 10 725.4 7016.2
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 12.7%
Ten most frequent errors:
1. First word of command is invalid 29.7%
2. NS command - no next screen 18.9%
3. FIND command with invalid index name 12.9%
4. Index invalid in current database 4.6%
5. PS command - no previous screen 2.4%
6. DISPLAY command contains invalid word 2.2%
7. Valid command at an inappropriate time 2.0%
8. Search term missing from search command 1.6%
9. Z39.50 host unable to process search 1.3%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 23.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 19.1%
2. GUIDE (Z39.50 A&I DBS) 19.1%
3. FIND (Z39.50 DBS) 7.8%
4. INDEXES (RCAT DB) 7.0%
5. COMMANDS (Z39.50 DBS) 6.8%
6. Unrecognized term 5.1%
7. GUIDE (Z39.50 non-A&I DBS) 4.1%
8. INDEXES (ANTH DB) 3.3%
9. FORM (RCAT DB) 2.5%
10. LOCATE (Z39.50 DBS) 2.1%
11. All others 23.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.0%
2. First word of command is invalid 19.3%
3. FIND command with invalid index name 9.3%
4. DISPLAY command-complete in one screen 7.6%
5. FIND command with zero results 6.5%
6. F/BR with index invalid in current DB 5.3%
7. DISPLAY command-first of >1 screen 5.2%
8. DISPLAY command - middle of >1 screen 3.4%
9. DISPLAY command - last of >1 screen 2.5%
10. MELVYL system could not process command 1.5%
11. All others 13.3%
Ten most frequent SHOW requests:
1. HISTORY 48.4%
2. SEARCH 26.9%
3. GLOSSARY 5.4%
4. SETTINGS (Z39.50 DBS) 4.3%
5. FORM NAMES (RCAT DB) 3.2%
6. Z39.50 NEWS 2.2%
7. DISPLAY 2.2%
8. 0405 1.1%
9. 0408 1.1%
10. 0416 1.1%
11. All others 4.3%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)