MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 08/01/99 through 08/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 399 769 1,168
Davis 154 1 155
Irvine 84 0 84
Los Angeles 280 225 505
Riverside 112 6 118
San Diego 48 37 85
San Francisco 25 1 26
Santa Barbara 219 80 299
Santa Cruz 31 79 110
Other - UC 53 33 86
Other-Network UC n/a 196 196
_______ ______ _____
1,405 1,427 2,832
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 52 298
2-4 a.m. 4 34 239
4-6 a.m. 2 4 32
6-8 a.m. 32 51 11,772
8-10 a.m. 246 915 33,504
10-12 a.m. 520 1,963 19,293
12-2 p.m. 553 2,937 47,926
2-4 p.m. 727 3,101 57,504
4-6 p.m. 487 2,461 63,277
6-8 p.m. 151 1,456 8,812
8-10 p.m. 63 258 2,305
10-12 p.m. 33 126 845
__________ __________ __________ _________________
Total: 2,832 13,358 245,807
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,161 2,215 3,376
Davis 238 1 239
Irvine 143 0 143
Los Angeles 6,488 577 7,065
Riverside 288 43 331
San Diego 126 67 193
San Francisco 96 1 97
Santa Barbara 728 295 1,023
Santa Cruz 77 154 231
Other - UC 139 151 290
Other-Network UC n/a 370 370
_______ ______ _____
9,484 3,874 13,358
Number of FIND commands by database
RLIN Bibliographic File 9,758
Anthropological Literature 1,433
Avery Index to Architectural Per. 1,118
History of Science & Technology 237
Index to Foreign Legal Periodical 8
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 290
English Short Title Catalogue 514
Total number of FIND commands 13,358
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,778 168,190 179,968
Davis 1,458 0 1,458
Irvine 1,237 0 1,237
Los Angeles 34,515 5,312 39,827
Riverside 1,220 276 1,496
San Diego 1,323 517 1,840
San Francisco 977 1 978
Santa Barbara 8,198 2,051 10,249
Santa Cruz 369 1,216 1,585
Other - UC 2,905 1,060 3,965
Other-Network UC n/a 3,204 3,204
_______ ______ _____
63,980 181,827 245,807
Number of Records Displayed by database
RLIN Bibliographic File 63,826
Anthropological Literature 12,826
Avery Index to Architectural Per. 11,689
History of Science & Technology 2,747
Index to Foreign Legal Periodical 0
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 2,344
English Short Title Catalogue 152,375
Total number of Records Displayed 245,807
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,640 57.9%
Anthropological Literature 481 17.0%
Avery Index to Architectural Per. 327 11.5%
History of Science & Technology 90 3.2%
Index to Foreign Legal Periodical 12 0.4%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 106 3.7%
English Short Title Catalogue 176 6.2%
Percent of searches done in the RCAT database 73.0%
Percent of searches done in the ANTH database 10.7%
Percent of searches done in the ARCH database 8.4%
Percent of searches done in the HSCI database 1.8%
Percent of searches done in the FLEG database 0.1%
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 2.2%
Percent of searches done in the ESTC database 3.8%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.6
Standard deviation in seconds 7.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.9
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 13:39
Average session length (minutes:seconds) 19:29
Longest session recorded (minutes:seconds) 305:23
Average number of searches completed per session 5.9
Retrievals per search - median 2.0
Retrievals per search - average 80.0
Retrievals per search - standard deviation 1699.5
Percent of searches completed with 0 results 19.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,517 30.4%
DISPLAY (excluding automatic displays) 17,915 57.3%
HELP 128 0.4%
EXPLAIN 141 0.5%
SET/RESET 878 2.8%
SHOW 113 0.4%
ADD ON (AND, OR, AND NOT) 241 0.8%
LOGON or LOGOFF 1,729 5.5%
COMMENT 0 0.0%
USE 13 0.0%
OTHER 598 1.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 33.4%
LONG 25.4%
TAGS 0.0%
FIELDS 1.1%
PERIODICALS 0.9%
COMMENTS 0.0%
Other 36.8%
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 1,003 10.2% 204 20.3% 18 106.3 330.6
EXACT AUTHOR 15 0.2% 6 40.0% 46 90.9 117.0
CORPORATE AUTHOR 46 0.5% 17 37.0% 10 519.9 2633.7
EXACT CORPORATE 2 0.0% 1 50.0% 2 2.0 0.0
TITLE WORD 1,652 16.8% 491 29.7% 7 398.4 4694.0
EXACT TITLE/SERI 570 5.8% 146 25.6% 3 67.8 462.1
EXACT JOURNAL 16 0.2% 7 43.8% 26 41.9 42.7
SUBJECT 109 1.1% 23 21.1% 31 1155.4 4644.0
EXACT SUBJECT 2 0.0% 0 0.0% 25 25.0 0.0
SERIES 44 0.4% 20 45.5% 8 22.3 57.3
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 4 0.0% 0 0.0% 15 335.3 649.2
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 6 0.1% 6 100% 0 0.0 0.0
GE 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 1 0.0% 0 0.0% 1 1.0 0.0
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 66 0.7% 17 25.8% 1 1.0 0.0
PLACE OF PUBL. 2 0.0% 1 50.0% 11 11.0 0.0
UNIFORM TITLE 2 0.0% 1 50.0% 2 2.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 140 1.4% 57 40.7% 4 26.5 125.8
EXACT PE 16 0.2% 5 31.3% 16 45.4 63.5
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 6,131 62.4% 926 15.1% 3 16.0 76.2
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 349 3.7% 130 37.2% 4 21.2 94.7
Single 9,126 96.3% 1,668 18.3% 4 103.3 1938.9
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 5:17
Average session length (minutes:seconds) 10:20
Longest session recorded (minutes:seconds) 139:28
Average number of searches completed per session 3.0
Retrievals per search - median 3.0
Retrievals per search - average 132.8
Retrievals per search - standard deviation 1040.3
Percent of searches completed with 0 results 33.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,400 39.8%
DISPLAY (excluding automatic displays) 880 25.0%
HELP 126 3.6%
EXPLAIN 156 4.4%
SET/RESET 187 5.3%
SHOW 8 0.2%
ADD ON (AND, OR, AND NOT) 33 0.9%
LOGON or LOGOFF 598 17.0%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 129 3.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 82.5%
LONG 6.5%
TAGS 0.5%
FIELDS 1.6%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 6.0%
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 559 38.9% 120 21.5% 13 35.7 87.8
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 423 29.5% 180 42.6% 8 75.5 189.6
EXACT TITLE 14 1.0% 9 64.3% 9 38.0 73.3
SUBJECT 362 25.2% 138 38.1% 19 572.6 2372.0
EXACT SUBJECT 8 0.6% 5 62.5% 57 4657.7 8016.3
EXACT JOURNAL 32 2.2% 19 59.4% 468 976.5 1460.8
DATE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 2 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 20 1.4% 7 35.0% 6 38.4 79.6
EXACT PE 4 0.3% 1 25.0% 16 11.3 9.0
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 0.8% 4 33.3% 18 18.3 16.6
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 37 2.6% 17 45.9% 6 13.6 14.6
Single 1,362 97.4% 449 33.0% 13 207.3 1297.2
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 8:35
Average session length (minutes:seconds) 12:26
Longest session recorded (minutes:seconds) 87:10
Average number of searches completed per session 3.4
Retrievals per search - median 3.0
Retrievals per search - average 155.6
Retrievals per search - standard deviation 1103.8
Percent of searches completed with 0 results 34.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,086 35.8%
DISPLAY (excluding automatic displays) 1,025 33.8%
HELP 88 2.9%
EXPLAIN 67 2.2%
SET/RESET 106 3.5%
SHOW 21 0.7%
ADD ON (AND, OR, AND NOT) 32 1.1%
LOGON or LOGOFF 460 15.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 146 4.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 85.1%
LONG 6.2%
TAGS 0.0%
FIELDS 1.0%
PERIODICALS 2.9%
COMMENTS 0.0%
Other 3.6%
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 168 14.9% 70 41.7% 10 21.6 41.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 6 0.5% 6 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 312 27.7% 109 34.9% 9 132.6 738.7
EXACT TITLE 8 0.7% 4 50.0% 40 94.0 136.8
SUBJECT 491 43.6% 154 31.4% 33 306.0 1876.7
EXACT SUBJECT 20 1.8% 10 50.0% 887 857.3 270.5
EXACT JOURNAL 33 2.9% 17 51.5% 65 404.8 691.8
CONFERENCE 18 1.6% 3 16.7% 2,459 1712.8 1111.1
EXACT CONFERENCE 5 0.4% 3 60.0% 1,249 1249.0 0.0
ABSTRACT 8 0.7% 0 0.0% 618 544.5 435.1
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 3 0.3% 1 33.3% 27 27.0 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 19 1.7% 4 21.1% 6 33.9 80.4
EXACT PE 19 1.7% 4 21.1% 3 8.3 16.8
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 15 1.3% 5 33.3% 66 142.3 189.5
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 40 3.7% 16 40.0% 35 443.7 1098.5
Single 1,044 96.3% 357 34.2% 16 234.2 1383.5
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 5:48
Average session length (minutes:seconds) 11:49
Longest session recorded (minutes:seconds) 154:57
Average number of searches completed per session 2.6
Retrievals per search - median 2.0
Retrievals per search - average 70.8
Retrievals per search - standard deviation 545.3
Percent of searches completed with 0 results 42.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 236 33.3%
DISPLAY (excluding automatic displays) 239 33.8%
HELP 26 3.7%
EXPLAIN 41 5.8%
SET/RESET 32 4.5%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 0.1%
LOGON or LOGOFF 115 16.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 18 2.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 62.9%
LONG 8.9%
TAGS 1.0%
FIELDS 3.8%
PERIODICALS 1.0%
COMMENTS 0.0%
Other 22.3%
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 71 29.2% 42 59.2% 15 31.7 43.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 119 49.0% 34 28.6% 25 162.2 902.3
EXACT TITLE 2 0.8% 1 50.0% 3 3.0 0.0
EXACT JOURNAL 1 0.4% 0 0.0% 612 612.0 0.0
SUBJECT 37 15.2% 20 54.1% 21 66.1 89.1
EXACT SUBJECT 1 0.4% 0 0.0% 19 19.0 0.0
SERIES 1 0.4% 1 100% 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 3 1.2% 1 33.3% 9 9.0 9.9
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 8 3.3% 4 50.0% 4 10.0 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 7 3.0% 3 42.9% 1 2.5 3.0
Single 229 97.0% 97 42.4% 20 125.0 726.9
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 3:05
Average session length (minutes:seconds) 4:45
Longest session recorded (minutes:seconds) 11:25
Average number of searches completed per session 0.7
Retrievals per search - median 0.0
Retrievals per search - average 6.9
Retrievals per search - standard deviation 19.4
Percent of searches completed with 0 results 87.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 8 20.0%
DISPLAY (excluding automatic displays) 0 0.0%
HELP 4 10.0%
EXPLAIN 2 5.0%
SET/RESET 2 5.0%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 19 47.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 5 12.5%
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 0 0.0% 0 0.0% 0 0.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 4 44.4% 3 75.0% 55 55.0 0.0
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 1 11.1% 1 100% 0 0.0 0.0
SUBJECT 3 33.3% 3 100% 0 0.0 0.0
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 1 11.1% 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 1 12.5% 1 100% 0 0.0 0.0
Single 7 87.5% 6 85.7% 55 55.0 0.0
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 5:04
Average session length (minutes:seconds) 11:37
Longest session recorded (minutes:seconds) 214:20
Average number of searches completed per session 2.7
Retrievals per search - median 1.0
Retrievals per search - average 90.1
Retrievals per search - standard deviation 542.6
Percent of searches completed with 0 results 44.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 289 34.6%
DISPLAY (excluding automatic displays) 201 24.1%
HELP 54 6.5%
EXPLAIN 65 7.8%
SET/RESET 28 3.4%
SHOW 1 0.1%
ADD ON (AND, OR, AND NOT) 1 0.1%
LOGON or LOGOFF 154 18.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 42 5.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 83.2%
LONG 9.0%
TAGS 0.0%
FIELDS 2.0%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 1.6%
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 40 13.8% 18 45.0% 9 31.5 53.5
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 1 0.3% 1 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 85 29.4% 45 52.9% 9 19.1 33.1
EXACT TITLE 6 2.1% 3 50.0% 1 3.0 3.5
ABSTRACT 3 1.0% 2 66.7% 311 311.0 0.0
SUBJECT 131 45.3% 47 35.9% 34 193.3 518.1
EXACT SUBJECT 10 3.5% 4 40.0% 3 21.2 32.7
EXACT JOURNAL 1 0.3% 1 100% 0 0.0 0.0
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 5 1.7% 3 60.0% 3,961 3960.5 5514.7
EXACT PE 4 1.4% 3 75.0% 45 45.0 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 1.0% 2 66.7% 21 21.0 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 289 100% 129 44.6% 14 163.3 723.3
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 11:41
Average session length (minutes:seconds) 30:14
Longest session recorded (minutes:seconds) 253:05
Average number of searches completed per session 2.9
Retrievals per search - median 19.0
Retrievals per search - average 1397.3
Retrievals per search - standard deviation 5463.4
Percent of searches completed with 0 results 17.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 493 27.7%
DISPLAY (excluding automatic displays) 617 34.7%
HELP 34 1.9%
EXPLAIN 90 5.1%
SET/RESET 144 8.1%
SHOW 9 0.5%
ADD ON (AND, OR, AND NOT) 21 1.2%
LOGON or LOGOFF 316 17.8%
COMMENT 0 0.0%
USE 3 0.2%
OTHER 52 2.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 15.7%
SHORT 42.5%
LONG 23.7%
TAGS 0.8%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 17.2%
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 12 2.0% 4 33.3% 119 79.4 55.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 84 14.3% 28 33.3% 19 39.9 62.6
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 1 0.2% 1 100% 0 0.0 0.0
EXACT CORP. AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 227 38.7% 48 21.1% 16 233.1 1000.2
EXACT TITLE 43 7.3% 8 18.6% 2 10.0 30.2
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 5 0.9% 3 60.0% 51 50.5 27.6
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 4 0.7% 0 0.0% 451 1858.8 2959.4
IMPRINT YEAR 2 0.3% 2 100% 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 1 0.2% 0 0.0% 31 31.0 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 205 35.0% 2 1.0% 1,095 3291.0 8292.1
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 2 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 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 93 18.9% 12 12.9% 20 49.1 70.0
Single 400 81.1% 72 18.0% 94 2172.6 6720.0
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. First word of command is invalid 28.1%
2. NS command - no next screen 21.3%
3. FIND command with invalid index name 9.2%
4. DISPLAY command contains invalid word 8.7%
5. Index invalid in current database 3.2%
6. DISPLAY command-record numbers too large 2.0%
7. Command contains escape or arrow key 1.7%
8. PS command - no previous screen 1.6%
9. Search term missing from search command 1.4%
10. Z39.50 host unable to process search 1.4%
11. All others 21.4%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 13.3%
2. INDEXES (ESTC DB) 9.3%
3. FIND (Z39.50 DBS) 8.9%
4. LOCATE (Z39.50 DBS) 8.7%
5. GUIDE (Z39.50 non-A&I DBS) 6.6%
6. INDEXES (ANTH DB) 6.6%
7. INDEXES (RCAT DB) 5.7%
8. COMMANDS (Z39.50 DBS) 5.3%
9. LOCATE (Z39.50 DBS) 4.6%
10. Unrecognized term 3.4%
11. All others 27.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.5%
2. First word of command is invalid 12.1%
3. F/BR with index invalid in current DB 9.1%
4. FIND command with zero results 7.1%
5. FIND command with invalid index name 6.9%
6. DISPLAY command-complete in one screen 5.9%
7. MELVYL system could not process command 4.4%
8. DISPLAY command - middle of >1 screen 3.6%
9. DISPLAY command-first of >1 screen 3.4%
10. FIND command retrieves 1 book 2.7%
11. All others 21.1%
Ten most frequent SHOW requests:
1. HISTORY 74.0%
2. SEARCH 16.0%
3. SETTINGS (Z39.50 DBS) 3.3%
4. Z39.50 NEWS 2.7%
5. TEN-YEAR DATABASE NEWS 1.3%
6. GLOSSARY 0.7%
7. SYSTEM NEWS 0.7%
8. DISPLAY 0.7%
9. LIBRARY LOCATIONS 0.7%
11. All others 0.0%