MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 05/01/00 through 05/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 249 538 787
Davis 150 4 154
Irvine 93 0 93
Los Angeles 70 262 332
Riverside 118 11 129
San Diego 38 54 92
San Francisco 35 0 35
Santa Barbara 293 73 366
Santa Cruz 98 26 124
Other - UC 6 32 38
Other-Network UC n/a 199 199
_______ ______ _____
1,150 1,199 2,349
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 16 29 218
2-4 a.m. 6 47 192
4-6 a.m. 0 15 88
6-8 a.m. 42 150 1,041
8-10 a.m. 204 542 4,200
10-12 a.m. 405 1,056 7,980
12-2 p.m. 416 1,091 8,755
2-4 p.m. 593 1,565 14,341
4-6 p.m. 386 1,054 9,293
6-8 p.m. 160 374 3,287
8-10 p.m. 82 285 2,058
10-12 p.m. 39 71 607
__________ __________ __________ _________________
Total: 2,349 6,279 52,060
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 879 1,552 2,431
Davis 314 11 325
Irvine 197 0 197
Los Angeles 139 755 894
Riverside 235 51 286
San Diego 74 96 170
San Francisco 96 0 96
Santa Barbara 824 224 1,048
Santa Cruz 246 24 270
Other - UC 20 87 107
Other-Network UC n/a 455 455
_______ ______ _____
3,024 3,255 6,279
Number of FIND commands by database
RLIN Bibliographic File 3,066
Anthropological Literature 1,669
Avery Index to Architectural Per. 519
History of Science & Technology 251
Index to Foreign Legal Periodical 72
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 491
English Short Title Catalogue 211
Total number of FIND commands 6,279
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,690 12,887 19,577
Davis 2,571 82 2,653
Irvine 992 0 992
Los Angeles 621 6,702 7,323
Riverside 1,435 484 1,919
San Diego 878 1,133 2,011
San Francisco 942 0 942
Santa Barbara 5,347 2,507 7,854
Santa Cruz 2,332 266 2,598
Other - UC 1,964 699 2,663
Other-Network UC n/a 3,528 3,528
_______ ______ _____
23,772 28,288 52,060
Number of Records Displayed by database
RLIN Bibliographic File 23,680
Anthropological Literature 13,894
Avery Index to Architectural Per. 5,995
History of Science & Technology 2,275
Index to Foreign Legal Periodical 246
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 4,863
English Short Title Catalogue 1,107
Total number of Records Displayed 52,060
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,200 51.1%
Anthropological Literature 598 25.5%
Avery Index to Architectural Per. 155 6.6%
History of Science & Technology 122 5.2%
Index to Foreign Legal Periodical 26 1.1%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 189 8.0%
English Short Title Catalogue 59 2.5%
Percent of searches done in the RCAT database 48.8%
Percent of searches done in the ANTH database 26.6%
Percent of searches done in the ARCH database 8.3%
Percent of searches done in the HSCI database 4.0%
Percent of searches done in the FLEG database 1.1%
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 7.8%
Percent of searches done in the ESTC database 3.4%
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 7.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 4.6
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 11:51
Average session length (minutes:seconds) 12:49
Longest session recorded (minutes:seconds) 182:12
Average number of searches completed per session 2.5
Retrievals per search - median 2.0
Retrievals per search - average 440.6
Retrievals per search - standard deviation 8138.0
Percent of searches completed with 0 results 27.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,857 33.0%
DISPLAY (excluding automatic displays) 3,205 37.0%
HELP 63 0.7%
EXPLAIN 64 0.7%
SET/RESET 802 9.3%
SHOW 84 1.0%
ADD ON (AND, OR, AND NOT) 209 2.4%
LOGON or LOGOFF 1,027 11.9%
COMMENT 0 0.0%
USE 3 0.0%
OTHER 339 3.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.1%
SHORT 51.2%
LONG 17.8%
TAGS 0.0%
FIELDS 4.5%
PERIODICALS 3.8%
COMMENTS 0.0%
Other 13.5%
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 25.2% 191 23.7% 11 109.9 654.2
EXACT AUTHOR 13 0.4% 0 0.0% 8 23.6 29.8
CORPORATE AUTHOR 47 1.5% 15 31.9% 23 331.9 1376.1
EXACT CORPORATE 3 0.1% 2 66.7% 25 25.0 0.0
TITLE WORD 1,244 39.0% 388 31.2% 6 1209.9 14917.5
EXACT TITLE/SERI 604 18.9% 170 28.1% 3 68.4 569.7
EXACT JOURNAL 3 0.1% 1 33.3% 1 1.0 0.0
SUBJECT 132 4.1% 24 18.2% 16 1762.7 9339.6
EXACT SUBJECT 2 0.1% 1 50.0% 50 50.0 0.0
SERIES 44 1.4% 23 52.3% 15 66.1 155.2
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 15 0.5% 3 20.0% 9 17.3 22.4
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 1 0.0% 1 100% 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 0 0.0% 0 0.0% 0 0.0 0.0
PLACE OF PUBL. 1 0.0% 0 0.0% 1 1.0 0.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
XOT 3 0.1% 1 33.3% 17 17.0 0.0
PERIODICAL 74 2.3% 13 17.6% 7 42.8 98.2
EXACT PE 20 0.6% 5 25.0% 4 77.7 120.2
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 179 5.6% 49 27.4% 3 12.6 24.5
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 342 12.1% 94 27.5% 4 28.4 209.4
Single 2,489 87.9% 697 28.0% 7 740.5 10584.8
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 4:04
Average session length (minutes:seconds) 8:41
Longest session recorded (minutes:seconds) 85:47
Average number of searches completed per session 2.8
Retrievals per search - median 3.0
Retrievals per search - average 132.3
Retrievals per search - standard deviation 697.7
Percent of searches completed with 0 results 35.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,629 37.5%
DISPLAY (excluding automatic displays) 967 22.2%
HELP 257 5.9%
EXPLAIN 246 5.7%
SET/RESET 196 4.5%
SHOW 26 0.6%
ADD ON (AND, OR, AND NOT) 40 0.9%
LOGON or LOGOFF 811 18.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 177 4.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.2%
SHORT 83.6%
LONG 6.8%
TAGS 0.2%
FIELDS 1.3%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 1.3%
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 469 28.1% 101 21.5% 14 39.1 98.1
EXACT AUTHOR 1 0.1% 1 100% 0 0.0 0.0
TITLE WORD 476 28.5% 178 37.4% 8 88.9 360.3
EXACT TITLE 42 2.5% 31 73.8% 8 22.5 37.5
SUBJECT 582 34.9% 245 42.1% 37 405.4 1156.1
EXACT SUBJECT 18 1.1% 10 55.6% 4 628.9 1255.5
EXACT JOURNAL 34 2.0% 14 41.2% 221 1243.9 2182.2
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 26 1.6% 3 11.5% 4 552.4 2596.9
EXACT PE 9 0.5% 4 44.4% 4 6.8 8.8
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 12 0.7% 4 33.3% 7 11.9 14.3
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 41 2.5% 18 43.9% 2 6.2 10.0
Single 1,587 97.5% 555 35.0% 15 213.4 877.3
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 5:51
Average session length (minutes:seconds) 9:55
Longest session recorded (minutes:seconds) 70:12
Average number of searches completed per session 3.3
Retrievals per search - median 3.0
Retrievals per search - average 66.6
Retrievals per search - standard deviation 264.1
Percent of searches completed with 0 results 37.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 497 39.6%
DISPLAY (excluding automatic displays) 329 26.2%
HELP 36 2.9%
EXPLAIN 39 3.1%
SET/RESET 56 4.5%
SHOW 6 0.5%
ADD ON (AND, OR, AND NOT) 22 1.8%
LOGON or LOGOFF 210 16.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 61 4.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 79.7%
LONG 5.0%
TAGS 0.2%
FIELDS 1.4%
PERIODICALS 7.6%
COMMENTS 0.0%
Other 3.5%
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 135 26.1% 61 45.2% 11 32.8 124.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 8 1.5% 2 25.0% 1,290 860.3 665.6
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 149 28.8% 56 37.6% 8 98.0 451.5
EXACT TITLE 4 0.8% 3 75.0% 1 1.0 0.0
SUBJECT 166 32.0% 54 32.5% 26 126.0 261.1
EXACT SUBJECT 7 1.4% 4 57.1% 126 109.0 29.4
EXACT JOURNAL 12 2.3% 7 58.3% 127 244.0 276.4
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 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 5 1.0% 0 0.0% 179 179.0 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 10 1.9% 4 40.0% 2 4.3 7.2
EXACT PE 14 2.7% 2 14.3% 18 148.2 243.2
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 8 1.5% 1 12.5% 32 56.0 94.1
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 4.2% 5 23.8% 35 86.9 90.1
Single 476 95.8% 184 38.7% 15 111.9 344.4
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 2:30
Average session length (minutes:seconds) 5:03
Longest session recorded (minutes:seconds) 72:53
Average number of searches completed per session 2.1
Retrievals per search - median 1.0
Retrievals per search - average 71.6
Retrievals per search - standard deviation 498.9
Percent of searches completed with 0 results 39.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 249 31.5%
DISPLAY (excluding automatic displays) 178 22.5%
HELP 49 6.2%
EXPLAIN 45 5.7%
SET/RESET 9 1.1%
SHOW 2 0.3%
ADD ON (AND, OR, AND NOT) 2 0.3%
LOGON or LOGOFF 224 28.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 33 4.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.5%
SHORT 85.0%
LONG 8.4%
TAGS 0.4%
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 52 20.8% 24 46.2% 27 58.2 95.2
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 92 36.8% 25 27.2% 5 45.4 98.8
EXACT TITLE 5 2.0% 4 80.0% 1 1.0 0.0
EXACT JOURNAL 2 0.8% 1 50.0% 123 123.0 0.0
SUBJECT 97 38.8% 47 48.5% 9 261.8 1096.8
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 2 0.8% 0 0.0% 42 42.0 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 0.4% 1 100% 0 0.0 0.0
Single 248 99.6% 99 39.9% 8 120.6 643.8
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 2:51
Average session length (minutes:seconds) 6:53
Longest session recorded (minutes:seconds) 23:32
Average number of searches completed per session 2.8
Retrievals per search - median 1.0
Retrievals per search - average 37.3
Retrievals per search - standard deviation 204.4
Percent of searches completed with 0 results 47.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 72 34.4%
DISPLAY (excluding automatic displays) 28 13.4%
HELP 30 14.4%
EXPLAIN 15 7.2%
SET/RESET 4 1.9%
SHOW 2 1.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 47 22.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 11 5.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 92.7%
LONG 7.3%
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 53 73.6% 24 45.3% 4 11.7 14.9
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 9 12.5% 5 55.6% 1 7.8 13.5
EXACT TITLE 2 2.8% 2 100% 0 0.0 0.0
EXACT JOURNAL 1 1.4% 1 100% 0 0.0 0.0
SUBJECT 7 9.7% 2 28.6% 18 462.6 704.3
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 72 100% 34 47.2% 6 70.6 278.8
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 4:16
Average session length (minutes:seconds) 8:30
Longest session recorded (minutes:seconds) 73:51
Average number of searches completed per session 2.6
Retrievals per search - median 2.0
Retrievals per search - average 60.9
Retrievals per search - standard deviation 281.0
Percent of searches completed with 0 results 40.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 485 33.9%
DISPLAY (excluding automatic displays) 340 23.7%
HELP 94 6.6%
EXPLAIN 93 6.5%
SET/RESET 47 3.3%
SHOW 9 0.6%
ADD ON (AND, OR, AND NOT) 6 0.4%
LOGON or LOGOFF 294 20.5%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 63 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 84.4%
LONG 10.7%
TAGS 0.0%
FIELDS 1.6%
PERIODICALS 0.9%
COMMENTS 0.0%
Other 0.9%
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 96 19.8% 39 40.6% 14 26.7 28.2
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 2 0.4% 2 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 129 26.5% 50 38.8% 7 56.8 164.0
EXACT TITLE 17 3.5% 9 52.9% 2 5.6 11.5
ABSTRACT 8 1.6% 7 87.5% 18 18.0 0.0
SUBJECT 216 44.4% 76 35.2% 29 153.9 463.8
EXACT SUBJECT 2 0.4% 2 100% 0 0.0 0.0
EXACT JOURNAL 6 1.2% 2 33.3% 3 2.8 1.3
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 7 1.4% 4 57.1% 25 23.7 19.0
EXACT PE 1 0.2% 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 2 0.4% 2 100% 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 1 0.2% 1 100% 0 0.0 0.0
Single 484 99.8% 192 39.7% 15 94.9 336.9
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 9:56
Average session length (minutes:seconds) 14:07
Longest session recorded (minutes:seconds) 85:41
Average number of searches completed per session 3.6
Retrievals per search - median 2.0
Retrievals per search - average 97.5
Retrievals per search - standard deviation 581.2
Percent of searches completed with 0 results 37.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 207 36.8%
DISPLAY (excluding automatic displays) 159 28.2%
HELP 13 2.3%
EXPLAIN 41 7.3%
SET/RESET 30 5.3%
SHOW 4 0.7%
ADD ON (AND, OR, AND NOT) 4 0.7%
LOGON or LOGOFF 92 16.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 13 2.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.0%
SHORT 63.9%
LONG 24.8%
TAGS 0.0%
FIELDS 5.0%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 0.5%
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 16 7.6% 8 50.0% 7 29.8 43.8
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 79 37.6% 27 34.2% 17 52.1 171.3
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 82 39.0% 31 37.8% 7 257.6 1071.8
EXACT TITLE 18 8.6% 5 27.8% 5 335.6 865.9
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 5 2.4% 5 100% 0 0.0 0.0
IMPRINT YEAR 0 0.0% 0 0.0% 0 0.0 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 0 0.0% 0 0.0% 0 0.0 0.0
INDEXED BY 1 0.5% 0 0.0% 3 3.0 0.0
NOTES 2 1.0% 1 50.0% 2 2.0 0.0
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 1 0.5% 0 0.0% 4 4.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 2 1.0% 0 0.0% 1 1.0 0.0
PERIODICAL 4 1.9% 1 25.0% 22 27.0 8.7
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 3 1.4% 0 0.0% 2 2.3 1.5
Single 204 98.5% 78 38.2% 15 162.9 746.2
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 33.2%
2. NS command - no next screen 20.7%
3. FIND command with invalid index name 12.0%
4. Index invalid in current database 5.4%
5. Z39.50 host unable to process search 2.5%
6. DISPLAY command contains invalid word 2.0%
7. PS command - no previous screen 2.0%
8. Valid command at an inappropriate time 1.8%
9. Search term missing from search command 1.4%
10. DISPLAY command - no FIND results 1.0%
11. All others 18.0%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 20.8%
2. LOCATE (Z39.50 DBS) 20.3%
3. FIND (Z39.50 DBS) 10.3%
4. COMMANDS (Z39.50 DBS) 6.1%
5. INDEXES (ANTH DB) 4.8%
6. Unrecognized term 4.6%
7. INDEXES (RCAT DB) 3.1%
8. DATABASES 3.1%
9. ANTH DB 2.2%
10. GUIDE (Z39.50 non-A&I DBS) 2.0%
11. All others 22.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.3%
2. First word of command is invalid 19.8%
3. FIND command with invalid index name 10.7%
4. FIND command with zero results 6.6%
5. F/BR with index invalid in current DB 6.1%
6. DISPLAY command-first of >1 screen 5.2%
7. DISPLAY command-complete in one screen 5.1%
8. DISPLAY command - middle of >1 screen 3.6%
9. FIND command retrieves 1 book 3.1%
10. DISPLAY command - last of >1 screen 2.9%
11. All others 13.6%
Ten most frequent SHOW requests:
1. HISTORY 75.2%
2. SEARCH 12.8%
3. SETTINGS (Z39.50 DBS) 4.5%
4. GLOSSARY 3.8%
5. DATABASES 2.3%
6. Z39.50 NEWS 0.8%
7. PAGESIZE 0.8%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)