MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 12/01/99 through 12/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 147 415 562
Davis 138 4 142
Irvine 64 0 64
Los Angeles 60 183 243
Riverside 44 5 49
San Diego 26 42 68
San Francisco 24 0 24
Santa Barbara 150 47 197
Santa Cruz 57 39 96
Other - UC 10 21 31
Other-Network UC n/a 209 209
_______ ______ _____
720 965 1,685
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 19 86 1,218
2-4 a.m. 10 38 486
4-6 a.m. 4 10 52
6-8 a.m. 15 28 108
8-10 a.m. 160 364 3,290
10-12 a.m. 298 916 10,057
12-2 p.m. 304 1,370 8,287
2-4 p.m. 424 1,673 12,372
4-6 p.m. 260 1,182 8,925
6-8 p.m. 94 743 4,979
8-10 p.m. 54 224 1,544
10-12 p.m. 43 114 524
__________ __________ __________ _________________
Total: 1,685 6,748 51,842
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 428 1,411 1,839
Davis 302 11 313
Irvine 212 0 212
Los Angeles 2,037 548 2,585
Riverside 117 9 126
San Diego 132 90 222
San Francisco 56 0 56
Santa Barbara 386 127 513
Santa Cruz 206 150 356
Other - UC 1 62 63
Other-Network UC n/a 463 463
_______ ______ _____
3,877 2,871 6,748
Number of FIND commands by database
RLIN Bibliographic File 4,089
Anthropological Literature 1,401
Avery Index to Architectural Per. 260
History of Science & Technology 68
Index to Foreign Legal Periodical 337
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 302
English Short Title Catalogue 291
Total number of FIND commands 6,748
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,120 10,414 14,534
Davis 4,729 140 4,869
Irvine 1,023 0 1,023
Los Angeles 10,891 3,203 14,094
Riverside 1,487 85 1,572
San Diego 2,258 666 2,924
San Francisco 456 0 456
Santa Barbara 3,073 1,209 4,282
Santa Cruz 1,308 1,043 2,351
Other - UC 39 880 919
Other-Network UC n/a 4,818 4,818
_______ ______ _____
29,384 22,458 51,842
Number of Records Displayed by database
RLIN Bibliographic File 28,290
Anthropological Literature 12,697
Avery Index to Architectural Per. 3,676
History of Science & Technology 580
Index to Foreign Legal Periodical 1,243
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 2,131
English Short Title Catalogue 3,225
Total number of Records Displayed 51,842
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 911 54.1%
Anthropological Literature 430 25.5%
Avery Index to Architectural Per. 76 4.5%
History of Science & Technology 33 2.0%
Index to Foreign Legal Periodical 21 1.2%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 119 7.1%
English Short Title Catalogue 95 5.6%
Percent of searches done in the RCAT database 60.6%
Percent of searches done in the ANTH database 20.8%
Percent of searches done in the ARCH database 3.9%
Percent of searches done in the HSCI database 1.0%
Percent of searches done in the FLEG database 5.0%
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 4.5%
Percent of searches done in the ESTC database 4.3%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.5
Standard deviation in seconds 6.8
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) 12:24
Average session length (minutes:seconds) 16:40
Longest session recorded (minutes:seconds) 181:48
Average number of searches completed per session 4.5
Retrievals per search - median 3.0
Retrievals per search - average 81.4
Retrievals per search - standard deviation 1028.1
Percent of searches completed with 0 results 22.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,954 31.7%
DISPLAY (excluding automatic displays) 6,493 52.1%
HELP 55 0.4%
EXPLAIN 122 1.0%
SET/RESET 586 4.7%
SHOW 28 0.2%
ADD ON (AND, OR, AND NOT) 135 1.1%
LOGON or LOGOFF 804 6.4%
COMMENT 0 0.0%
USE 6 0.0%
OTHER 282 2.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
SHORT 39.8%
LONG 5.3%
TAGS 0.1%
FIELDS 2.2%
PERIODICALS 1.3%
COMMENTS 0.0%
Other 47.5%
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 805 19.0% 185 23.0% 13 207.3 1692.1
EXACT AUTHOR 15 0.4% 6 40.0% 1 8.3 15.0
CORPORATE AUTHOR 34 0.8% 14 41.2% 20 402.0 720.1
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 889 21.0% 272 30.6% 5 206.9 1870.9
EXACT TITLE/SERI 309 7.3% 85 27.5% 4 58.5 273.7
EXACT JOURNAL 2 0.0% 1 50.0% 11 11.0 0.0
SUBJECT 93 2.2% 24 25.8% 10 525.5 2016.6
EXACT SUBJECT 1 0.0% 0 0.0% 14 14.0 0.0
SERIES 14 0.3% 6 42.9% 8 17.9 20.1
CONFERENCE 2 0.0% 0 0.0% 14 14.0 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 11 0.3% 2 18.2% 25 123.4 200.2
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 3 0.1% 1 33.3% 57 57.0 77.8
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. 2 0.0% 1 50.0% 35 35.0 0.0
UNIFORM TITLE 1 0.0% 1 100% 0 0.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 75 1.8% 24 32.0% 4 50.7 271.4
EXACT PE 13 0.3% 9 69.2% 8 7.5 1.7
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 1,972 46.5% 353 17.9% 3 9.0 35.4
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 314 8.0% 99 31.5% 3 19.9 109.7
Single 3,607 92.0% 784 21.7% 4 114.7 1230.4
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 4:42
Average session length (minutes:seconds) 9:36
Longest session recorded (minutes:seconds) 360:25
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 301.4
Retrievals per search - standard deviation 4450.4
Percent of searches completed with 0 results 38.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,344 41.7%
DISPLAY (excluding automatic displays) 700 21.7%
HELP 129 4.0%
EXPLAIN 140 4.3%
SET/RESET 153 4.7%
SHOW 22 0.7%
ADD ON (AND, OR, AND NOT) 57 1.8%
LOGON or LOGOFF 554 17.2%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 126 3.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 85.2%
LONG 4.6%
TAGS 0.0%
FIELDS 1.5%
PERIODICALS 3.6%
COMMENTS 0.0%
Other 2.1%
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 402 28.9% 86 21.4% 12 29.8 74.2
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 359 25.8% 155 43.2% 8 128.7 505.1
EXACT TITLE 26 1.9% 20 76.9% 1 1.2 0.4
SUBJECT 530 38.1% 244 46.0% 35 1226.5 9748.9
EXACT SUBJECT 6 0.4% 4 66.7% 364 363.5 508.4
EXACT JOURNAL 15 1.1% 5 33.3% 568 1385.9 2180.9
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 23 1.7% 7 30.4% 5 1232.4 3192.9
EXACT PE 13 0.9% 4 30.8% 2 139.3 403.1
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 18 1.3% 7 38.9% 2 2.4 2.2
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 49 3.7% 26 53.1% 2 33.3 75.6
Single 1,293 96.3% 479 37.0% 14 516.6 5826.3
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 7:32
Average session length (minutes:seconds) 12:05
Longest session recorded (minutes:seconds) 78:22
Average number of searches completed per session 3.4
Retrievals per search - median 4.0
Retrievals per search - average 391.6
Retrievals per search - standard deviation 1689.3
Percent of searches completed with 0 results 35.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 247 37.0%
DISPLAY (excluding automatic displays) 211 31.6%
HELP 18 2.7%
EXPLAIN 19 2.8%
SET/RESET 24 3.6%
SHOW 1 0.1%
ADD ON (AND, OR, AND NOT) 13 1.9%
LOGON or LOGOFF 104 15.6%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 29 4.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 80.6%
LONG 6.7%
TAGS 0.0%
FIELDS 5.9%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 1.2%
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 44 17.3% 17 38.6% 15 38.3 68.3
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 66 26.0% 32 48.5% 18 99.1 300.4
EXACT TITLE 4 1.6% 2 50.0% 2 1.5 0.7
SUBJECT 120 47.2% 33 27.5% 40 937.7 2363.8
EXACT SUBJECT 2 0.8% 1 50.0% 1 1.0 0.0
EXACT JOURNAL 5 2.0% 3 60.0% 7,649 7648.5 10069.9
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 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.4% 0 0.0% 48 48.0 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 8 3.1% 1 12.5% 6 11.4 12.9
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 4 1.6% 2 50.0% 111 110.5 88.4
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 6 2.4% 4 66.7% 111 110.5 88.4
Single 241 97.6% 83 34.4% 19 640.2 2132.8
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 3:15
Average session length (minutes:seconds) 6:03
Longest session recorded (minutes:seconds) 21:36
Average number of searches completed per session 2.1
Retrievals per search - median 3.5
Retrievals per search - average 147.7
Retrievals per search - standard deviation 1009.2
Percent of searches completed with 0 results 33.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 67 29.3%
DISPLAY (excluding automatic displays) 71 31.0%
HELP 17 7.4%
EXPLAIN 9 3.9%
SET/RESET 8 3.5%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 0.4%
LOGON or LOGOFF 51 22.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 5 2.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 88.1%
LONG 8.3%
TAGS 0.0%
FIELDS 1.2%
PERIODICALS 2.4%
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 21 30.9% 7 33.3% 34 34.6 25.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 33 48.5% 12 36.4% 18 441.0 1811.0
EXACT TITLE 3 4.4% 1 33.3% 1 1.0 0.0
EXACT JOURNAL 2 2.9% 0 0.0% 98 98.0 0.0
SUBJECT 8 11.8% 3 37.5% 21 18.8 15.0
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 1 1.5% 0 0.0% 5 5.0 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 1.5% 0 0.0% 1 1.0 0.0
Single 66 98.5% 23 34.8% 24 233.5 1266.6
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 9:01
Average session length (minutes:seconds) 13:23
Longest session recorded (minutes:seconds) 53:01
Average number of searches completed per session 16.0
Retrievals per search - median 2.0
Retrievals per search - average 26.0
Retrievals per search - standard deviation 125.7
Percent of searches completed with 0 results 17.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 336 53.0%
DISPLAY (excluding automatic displays) 187 29.5%
HELP 22 3.5%
EXPLAIN 29 4.6%
SET/RESET 1 0.2%
SHOW 4 0.6%
ADD ON (AND, OR, AND NOT) 1 0.2%
LOGON or LOGOFF 41 6.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 13 2.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.4%
SHORT 98.9%
LONG 0.7%
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 213 63.4% 26 12.2% 5 17.1 60.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 101 30.1% 21 20.8% 2 8.2 33.1
EXACT TITLE 1 0.3% 1 100% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 11 3.3% 3 27.3% 254 380.6 510.9
EXACT SUBJECT 9 2.7% 7 77.8% 931 931.0 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 1 0.3% 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 336 100% 59 17.6% 4 31.6 138.1
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 3:57
Average session length (minutes:seconds) 8:24
Longest session recorded (minutes:seconds) 126:37
Average number of searches completed per session 2.5
Retrievals per search - median 2.0
Retrievals per search - average 46.6
Retrievals per search - standard deviation 166.4
Percent of searches completed with 0 results 33.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 290 32.4%
DISPLAY (excluding automatic displays) 195 21.8%
HELP 63 7.0%
EXPLAIN 73 8.1%
SET/RESET 24 2.7%
SHOW 8 0.9%
ADD ON (AND, OR, AND NOT) 12 1.3%
LOGON or LOGOFF 192 21.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 39 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
SHORT 85.9%
LONG 7.2%
TAGS 0.0%
FIELDS 2.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.8%
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 64 21.1% 23 35.9% 7 22.4 28.6
EXACT AUTHOR 1 0.3% 1 100% 0 0.0 0.0
CORPORATE AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CORPORATE 1 0.3% 1 100% 0 0.0 0.0
TITLE WORD 76 25.1% 38 50.0% 14 80.6 244.3
EXACT TITLE 6 2.0% 2 33.3% 5 32.5 57.7
ABSTRACT 9 3.0% 1 11.1% 74 107.3 104.0
SUBJECT 131 43.2% 39 29.8% 11 90.3 245.4
EXACT SUBJECT 9 3.0% 0 0.0% 59 57.6 53.6
EXACT JOURNAL 3 1.0% 0 0.0% 53 53.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 3 1.0% 3 100% 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 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 12 4.1% 8 66.7% 63 57.3 42.1
Single 278 95.9% 91 32.7% 11 72.2 207.0
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 12:58
Average session length (minutes:seconds) 23:59
Longest session recorded (minutes:seconds) 351:06
Average number of searches completed per session 3.1
Retrievals per search - median 6.0
Retrievals per search - average 60.0
Retrievals per search - standard deviation 224.0
Percent of searches completed with 0 results 23.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 259 26.6%
DISPLAY (excluding automatic displays) 405 41.5%
HELP 20 2.1%
EXPLAIN 21 2.2%
SET/RESET 65 6.7%
SHOW 1 0.1%
ADD ON (AND, OR, AND NOT) 32 3.3%
LOGON or LOGOFF 155 15.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 17 1.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 12.7%
SHORT 51.0%
LONG 26.0%
TAGS 0.0%
FIELDS 1.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 9.2%
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 21 6.4% 6 28.6% 157 126.5 125.0
EXACT SUBJECT 1 0.3% 1 100% 0 0.0 0.0
AUTHOR 98 29.8% 31 31.6% 13 50.2 102.3
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 CORP. AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 79 24.0% 24 30.4% 12 42.3 115.4
EXACT TITLE 48 14.6% 11 22.9% 6 15.4 29.4
UNIFORM TITLE 2 0.6% 1 50.0% 62 62.0 0.0
EXACT UNIFORM TI 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 33 10.0% 4 12.1% 48 128.4 210.6
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 2 0.6% 0 0.0% 1,824 1824.0 2105.8
IMPRINT YEAR 2 0.6% 0 0.0% 2 2.0 0.0
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 3 0.9% 2 66.7% 21 21.0 0.0
INDEXED BY 1 0.3% 0 0.0% 2 2.0 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 29 8.8% 2 6.9% 13 47.1 110.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 1 0.3% 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 9 2.7% 0 0.0% 10 29.1 48.4
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 67 25.9% 15 22.4% 9 19.0 23.2
Single 192 74.1% 51 26.6% 18 107.6 312.5
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 28.3%
2. NS command - no next screen 18.5%
3. FIND command with invalid index name 9.6%
4. DISPLAY command contains invalid word 7.0%
5. Index invalid in current database 4.2%
6. Max. # of ports to a Z39 db are in use 2.3%
7. PS command - no previous screen 2.0%
8. Valid command at an inappropriate time 1.7%
9. DISPLAY command-record numbers too large 1.6%
10. 422 1.5%
11. All others 23.2%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 15.5%
2. LOCATE (Z39.50 DBS) 15.3%
3. INDEXES (RCAT DB) 7.7%
4. FIND (Z39.50 DBS) 7.5%
5. COMMANDS (Z39.50 DBS) 6.3%
6. GUIDE (Z39.50 non-A&I DBS) 4.8%
7. INDEXES (ANTH DB) 3.9%
8. INDEXES (CHI DB) 3.4%
9. LOCATE (Z39.50 DBS) 3.1%
10. G914 2.7%
11. All others 29.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.7%
2. First word of command is invalid 16.4%
3. FIND command with invalid index name 9.0%
4. DISPLAY command-complete in one screen 8.3%
5. F/BR with index invalid in current DB 5.7%
6. DISPLAY command - middle of >1 screen 5.2%
7. FIND command with zero results 3.1%
8. FIND command retrieves 1 book 3.0%
9. DISPLAY command-first of >1 screen 2.8%
10. MELVYL system could not process command 2.7%
11. All others 17.1%
Ten most frequent SHOW requests:
1. HISTORY 45.3%
2. SEARCH 25.0%
3. FORM NAMES (RCAT DB) 15.6%
4. Z39.50 NEWS 3.1%
5. SETTINGS (Z39.50 DBS) 3.1%
6. SYSTEM NEWS 1.6%
7. PAGESIZE 1.6%
11. All others 4.7%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)