MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 03/01/01 through 03/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 328 622 950
Davis 101 5 106
Irvine 113 0 113
Los Angeles 6 111 117
Riverside 48 9 57
San Diego 49 27 76
San Francisco 12 0 12
Santa Barbara 94 62 156
Santa Cruz 16 13 29
Other - UC 2 30 32
Other-Network UC n/a 234 234
_______ ______ _____
769 1,113 1,882
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 58 371
2-4 a.m. 4 6 206
4-6 a.m. 3 3 53
6-8 a.m. 26 68 1,120
8-10 a.m. 187 426 3,158
10-12 a.m. 410 1,125 8,567
12-2 p.m. 364 1,142 9,397
2-4 p.m. 415 1,287 11,939
4-6 p.m. 257 854 8,442
6-8 p.m. 105 358 3,907
8-10 p.m. 61 323 2,267
10-12 p.m. 38 103 657
__________ __________ __________ _________________
Total: 1,882 5,753 50,084
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,519 1,842 3,361
Davis 224 5 229
Irvine 230 0 230
Los Angeles 44 292 336
Riverside 128 18 146
San Diego 113 41 154
San Francisco 18 0 18
Santa Barbara 328 227 555
Santa Cruz 58 40 98
Other - UC 4 172 176
Other-Network UC n/a 450 450
_______ ______ _____
2,666 3,087 5,753
Number of FIND commands by database
RLIN Bibliographic File 3,249
Anthropological Literature 1,065
Avery Index to Architectural Per. 948
History of Science & Technology 144
Index to Foreign Legal Periodical 52
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 227
English Short Title Catalogue 68
Total number of FIND commands 5,753
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,833 17,195 29,028
Davis 2,149 96 2,245
Irvine 1,159 0 1,159
Los Angeles 324 3,157 3,481
Riverside 676 336 1,012
San Diego 993 358 1,351
San Francisco 578 0 578
Santa Barbara 3,111 2,150 5,261
Santa Cruz 246 182 428
Other - UC 5 1,354 1,359
Other-Network UC n/a 4,182 4,182
_______ ______ _____
21,074 29,010 50,084
Number of Records Displayed by database
RLIN Bibliographic File 27,848
Anthropological Literature 10,842
Avery Index to Architectural Per. 7,566
History of Science & Technology 1,453
Index to Foreign Legal Periodical 112
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,429
English Short Title Catalogue 834
Total number of Records Displayed 50,084
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,102 58.6%
Anthropological Literature 319 17.0%
Avery Index to Architectural Per. 234 12.4%
History of Science & Technology 77 4.1%
Index to Foreign Legal Periodical 17 0.9%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 104 5.5%
English Short Title Catalogue 29 1.5%
Percent of searches done in the RCAT database 56.5%
Percent of searches done in the ANTH database 18.5%
Percent of searches done in the ARCH database 16.5%
Percent of searches done in the HSCI database 2.5%
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 3.9%
Percent of searches done in the ESTC database 1.2%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.8
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 0.7
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:48
Average session length (minutes:seconds) 16:17
Longest session recorded (minutes:seconds) 369:33
Average number of searches completed per session 2.9
Retrievals per search - median 2.0
Retrievals per search - average 133.4
Retrievals per search - standard deviation 2172.1
Percent of searches completed with 0 results 26.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,113 33.0%
DISPLAY (excluding automatic displays) 4,105 43.5%
HELP 32 0.3%
EXPLAIN 69 0.7%
SET/RESET 803 8.5%
SHOW 21 0.2%
ADD ON (AND, OR, AND NOT) 136 1.4%
LOGON or LOGOFF 868 9.2%
COMMENT 0 0.0%
USE 4 0.0%
OTHER 289 3.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.8%
SHORT 59.3%
LONG 18.1%
TAGS 0.1%
FIELDS 3.9%
PERIODICALS 3.0%
COMMENTS 0.0%
Other 6.7%
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 1,016 28.9% 194 19.1% 10 106.4 465.5
EXACT AUTHOR 27 0.8% 7 25.9% 16 84.6 182.2
CORPORATE AUTHOR 35 1.0% 5 14.3% 11 66.2 165.7
EXACT CORPORATE 6 0.2% 0 0.0% 51 383.2 549.6
TITLE WORD 1,337 38.0% 384 28.7% 4 188.3 3413.9
EXACT TITLE/SERI 666 18.9% 185 27.8% 3 57.2 498.3
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 55 1.6% 15 27.3% 12 2949.9 9411.1
EXACT SUBJECT 10 0.3% 7 70.0% 155 164.0 153.7
SERIES 27 0.8% 13 48.1% 7 45.6 67.1
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 6 0.2% 2 33.3% 35 40.0 39.8
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 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 1 0.0% 1 100% 0 0.0 0.0
PLACE OF PUBL. 1 0.0% 1 100% 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 95 2.7% 32 33.7% 7 150.3 604.9
EXACT PE 7 0.2% 0 0.0% 5 7.9 6.5
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 228 6.5% 96 42.1% 2 8.6 28.3
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 422 13.7% 125 29.6% 3 8.1 20.7
Single 2,668 86.3% 690 25.9% 6 215.1 2770.6
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 5:43
Average session length (minutes:seconds) 12:15
Longest session recorded (minutes:seconds) 99:55
Average number of searches completed per session 3.3
Retrievals per search - median 5.0
Retrievals per search - average 109.9
Retrievals per search - standard deviation 538.8
Percent of searches completed with 0 results 29.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,042 40.8%
DISPLAY (excluding automatic displays) 665 26.1%
HELP 90 3.5%
EXPLAIN 95 3.7%
SET/RESET 116 4.5%
SHOW 10 0.4%
ADD ON (AND, OR, AND NOT) 23 0.9%
LOGON or LOGOFF 420 16.5%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 90 3.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 82.9%
LONG 10.3%
TAGS 0.0%
FIELDS 0.6%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 1.4%
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 565 53.1% 112 19.8% 10 30.4 64.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 205 19.3% 85 41.5% 12 238.4 709.9
EXACT TITLE 12 1.1% 9 75.0% 1 44.7 75.6
SUBJECT 254 23.9% 103 40.6% 27 491.0 1200.6
EXACT SUBJECT 2 0.2% 1 50.0% 162 162.0 0.0
EXACT JOURNAL 3 0.3% 1 33.3% 3 2.5 2.1
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 9 0.8% 0 0.0% 4 17.0 40.9
EXACT PE 1 0.1% 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 12 1.1% 3 25.0% 12 78.7 144.3
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 21 2.0% 8 38.1% 8 55.8 123.1
Single 1,021 98.0% 298 29.2% 12 160.7 647.6
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 10:22
Average session length (minutes:seconds) 11:31
Longest session recorded (minutes:seconds) 59:04
Average number of searches completed per session 4.1
Retrievals per search - median 2.0
Retrievals per search - average 159.2
Retrievals per search - standard deviation 1177.1
Percent of searches completed with 0 results 36.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 921 38.0%
DISPLAY (excluding automatic displays) 863 35.6%
HELP 62 2.6%
EXPLAIN 53 2.2%
SET/RESET 71 2.9%
SHOW 7 0.3%
ADD ON (AND, OR, AND NOT) 27 1.1%
LOGON or LOGOFF 333 13.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 87 3.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.4%
SHORT 62.4%
LONG 30.8%
TAGS 0.0%
FIELDS 3.6%
PERIODICALS 1.3%
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 70 7.3% 34 48.6% 5 18.3 36.0
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 131 13.7% 53 40.5% 3 96.8 380.0
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 695 72.7% 243 35.0% 13 291.9 1677.6
EXACT SUBJECT 19 2.0% 10 52.6% 21 309.8 449.5
EXACT JOURNAL 13 1.4% 9 69.2% 773 1343.5 1316.9
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 2 0.2% 1 50.0% 2 2.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 12 1.3% 1 8.3% 57 162.8 199.2
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 9 0.9% 4 44.4% 26 28.6 33.0
EXACT PE 3 0.3% 0 0.0% 10 10.0 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 0.2% 1 50.0% 70 70.0 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 34 3.7% 16 47.1% 23 106.0 170.1
Single 887 96.3% 324 36.5% 11 260.3 1518.4
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 2:24
Average session length (minutes:seconds) 4:03
Longest session recorded (minutes:seconds) 22:54
Average number of searches completed per session 1.9
Retrievals per search - median 0.5
Retrievals per search - average 49.0
Retrievals per search - standard deviation 189.9
Percent of searches completed with 0 results 50.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 143 29.0%
DISPLAY (excluding automatic displays) 87 17.6%
HELP 45 9.1%
EXPLAIN 50 10.1%
SET/RESET 10 2.0%
SHOW 2 0.4%
ADD ON (AND, OR, AND NOT) 1 0.2%
LOGON or LOGOFF 132 26.8%
COMMENT 0 0.0%
USE 1 0.2%
OTHER 22 4.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.5%
SHORT 85.8%
LONG 7.1%
TAGS 0.9%
FIELDS 0.9%
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 33 21.6% 18 54.5% 19 52.9 135.6
EXACT AUTHOR 6 3.9% 5 83.3% 1 1.0 0.0
TITLE WORD 35 22.9% 10 28.6% 9 28.4 74.1
EXACT TITLE 10 6.5% 10 100% 0 0.0 0.0
EXACT JOURNAL 9 5.9% 6 66.7% 1 70.3 120.1
SUBJECT 59 38.6% 29 49.2% 16 178.1 373.9
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 1 0.7% 1 100% 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 10 7.0% 8 80.0% 1 1.0 0.0
Single 133 93.0% 63 47.4% 13 100.8 263.5
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 3:21
Average session length (minutes:seconds) 6:00
Longest session recorded (minutes:seconds) 18:13
Average number of searches completed per session 3.1
Retrievals per search - median 0.0
Retrievals per search - average 58.9
Retrievals per search - standard deviation 273.5
Percent of searches completed with 0 results 59.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 51 48.1%
DISPLAY (excluding automatic displays) 14 13.2%
HELP 0 0.0%
EXPLAIN 1 0.9%
SET/RESET 1 0.9%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 0.9%
LOGON or LOGOFF 32 30.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 6 5.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 95.0%
LONG 5.0%
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 27 49.1% 18 66.7% 3 10.6 13.5
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 19 34.5% 10 52.6% 11 15.7 16.2
EXACT TITLE 1 1.8% 1 100% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 8 14.5% 5 62.5% 1,412 942.7 812.9
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 4 7.8% 4 100% 0 0.0 0.0
Single 47 92.2% 26 55.3% 8 145.9 421.1
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 2:55
Average session length (minutes:seconds) 5:41
Longest session recorded (minutes:seconds) 26:37
Average number of searches completed per session 2.2
Retrievals per search - median 1.0
Retrievals per search - average 40.7
Retrievals per search - standard deviation 188.2
Percent of searches completed with 0 results 39.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 225 31.2%
DISPLAY (excluding automatic displays) 137 19.0%
HELP 61 8.4%
EXPLAIN 72 10.0%
SET/RESET 17 2.4%
SHOW 2 0.3%
ADD ON (AND, OR, AND NOT) 2 0.3%
LOGON or LOGOFF 170 23.5%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 35 4.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 78.6%
LONG 12.1%
TAGS 0.5%
FIELDS 1.1%
PERIODICALS 0.5%
COMMENTS 0.0%
Other 5.5%
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 33 14.3% 12 36.4% 8 16.0 25.4
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 73 31.7% 35 47.9% 4 25.4 69.3
EXACT TITLE 7 3.0% 1 14.3% 2 2.5 2.3
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 100 43.5% 36 36.0% 27 110.4 337.7
EXACT SUBJECT 7 3.0% 1 14.3% 195 130.3 100.2
EXACT JOURNAL 1 0.4% 0 0.0% 1 1.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 5 2.2% 3 60.0% 3 3.0 1.4
LANGUAGE 1 0.4% 0 0.0% 129 129.0 0.0
PERIODICAL 3 1.3% 2 66.7% 35 35.0 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 6 2.7% 3 50.0% 4 45.0 72.8
Single 218 97.3% 84 38.5% 11 67.7 240.8
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 3:48
Average session length (minutes:seconds) 30:38
Longest session recorded (minutes:seconds) 574:36
Average number of searches completed per session 2.3
Retrievals per search - median 4.5
Retrievals per search - average 142.4
Retrievals per search - standard deviation 525.9
Percent of searches completed with 0 results 17.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 68 32.8%
DISPLAY (excluding automatic displays) 61 29.5%
HELP 11 5.3%
EXPLAIN 7 3.4%
SET/RESET 10 4.8%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 45 21.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 5 2.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.6%
SHORT 51.2%
LONG 41.7%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 3.6%
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 5 6.5% 1 20.0% 1,457 1499.0 1607.3
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 35 45.5% 7 20.0% 13 59.1 88.3
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 28 36.4% 3 10.7% 4 81.5 335.4
EXACT TITLE 1 1.3% 1 100% 0 0.0 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 5 6.5% 0 0.0% 2 2.4 2.1
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 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 1 1.3% 0 0.0% 1 1.0 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
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 2.6% 1 50.0% 1 1.0 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 9 13.2% 1 11.1% 2 2.4 2.0
Single 59 86.8% 11 18.6% 14 201.3 618.3
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 11.0%
Ten most frequent errors:
1. First word of command is invalid 27.5%
2. NS command - no next screen 23.1%
3. FIND command with invalid index name 11.8%
4. Index invalid in current database 5.0%
5. DISPLAY command contains invalid word 2.7%
6. Max. # of ports to a Z39 db are in use 2.5%
7. Valid command at an inappropriate time 2.4%
8. Search term missing from search command 2.0%
9. PS command - no previous screen 1.8%
10. Z39.50 host unable to process search 1.7%
11. All others 19.6%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 20.5%
2. GUIDE (Z39.50 A&I DBS) 18.7%
3. FIND (Z39.50 DBS) 11.0%
4. COMMANDS (Z39.50 DBS) 6.3%
5. INDEXES (RCAT DB) 5.5%
6. Unrecognized term 4.6%
7. LOCATE (Z39.50 DBS) 4.0%
8. G971 2.3%
9. FORM (RCAT DB) 2.0%
10. GUIDE (Z39.50 non-A&I DBS) 2.0%
11. All others 23.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.2%
2. First word of command is invalid 15.0%
3. FIND command with invalid index name 11.0%
4. DISPLAY command-complete in one screen 8.2%
5. FIND command with zero results 7.1%
6. F/BR with index invalid in current DB 4.9%
7. DISPLAY command-first of >1 screen 4.8%
8. DISPLAY command - middle of >1 screen 4.6%
9. NS command - no next screen 2.2%
10. FIND command retrieves 1 book 2.2%
11. All others 11.0%
Ten most frequent SHOW requests:
1. HISTORY 57.1%
2. SEARCH 33.3%
3. GLOSSARY 2.4%
4. GLOSSARY A 2.4%
5. 0420 2.4%
6. DATABASES 2.4%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)