MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 02/01/99 through 02/28/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,441 933 2,374
Davis 443 6 449
Irvine 220 0 220
Los Angeles 206 457 663
Riverside 201 15 216
San Diego 64 111 175
San Francisco 61 2 63
Santa Barbara 327 175 502
Santa Cruz 254 66 320
Other - UC 12 72 84
Other-Network UC n/a 170 170
_______ ______ _____
3,229 2,007 5,236
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 66 292 2,709
2-4 a.m. 22 72 312
4-6 a.m. 8 18 89
6-8 a.m. 43 113 592
8-10 a.m. 323 879 6,776
10-12 a.m. 886 2,730 21,713
12-2 p.m. 1,063 3,443 29,969
2-4 p.m. 1,132 4,225 40,412
4-6 p.m. 835 3,220 28,367
6-8 p.m. 435 1,819 17,449
8-10 p.m. 284 1,045 10,214
10-12 p.m. 139 477 5,112
__________ __________ __________ _________________
Total: 5,236 18,333 163,714
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,590 3,521 9,111
Davis 1,367 14 1,381
Irvine 698 0 698
Los Angeles 664 1,548 2,212
Riverside 597 69 666
San Diego 180 221 401
San Francisco 240 7 247
Santa Barbara 1,378 600 1,978
Santa Cruz 864 226 1,090
Other - UC 19 215 234
Other-Network UC n/a 315 315
_______ ______ _____
11,597 6,736 18,333
Number of FIND commands by database
RLIN Bibliographic File 4,607
Anthropological Literature 4,708
Avery Index to Architectural Per. 5,720
History of Science & Technology 478
Index to Foreign Legal Periodical 200
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,955
English Short Title Catalogue 665
Total number of FIND commands 18,333
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 56,894 32,189 89,083
Davis 10,400 94 10,494
Irvine 5,739 0 5,739
Los Angeles 4,617 17,105 21,722
Riverside 3,550 616 4,166
San Diego 1,391 2,075 3,466
San Francisco 2,534 292 2,826
Santa Barbara 10,082 3,837 13,919
Santa Cruz 4,648 2,368 7,016
Other - UC 88 1,841 1,929
Other-Network UC n/a 3,354 3,354
_______ ______ _____
99,943 63,771 163,714
Number of Records Displayed by database
RLIN Bibliographic File 37,792
Anthropological Literature 40,516
Avery Index to Architectural Per. 59,455
History of Science & Technology 3,375
Index to Foreign Legal Periodical 1,154
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 15,288
English Short Title Catalogue 6,134
Total number of Records Displayed 163,714
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,433 27.4%
Anthropological Literature 1,346 25.7%
Avery Index to Architectural Per. 1,431 27.3%
History of Science & Technology 167 3.2%
Index to Foreign Legal Periodical 57 1.1%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 602 11.5%
English Short Title Catalogue 200 3.8%
Percent of searches done in the RCAT database 25.1%
Percent of searches done in the ANTH database 25.7%
Percent of searches done in the ARCH database 31.2%
Percent of searches done in the HSCI database 2.6%
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 10.7%
Percent of searches done in the ESTC database 3.6%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.2
Standard deviation in seconds 8.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 1.8
Standard deviation in seconds 4.5
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:33
Average session length (minutes:seconds) 18:01
Longest session recorded (minutes:seconds) 203:56
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 141.5
Retrievals per search - standard deviation 1523.4
Percent of searches completed with 0 results 30.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,416 35.8%
DISPLAY (excluding automatic displays) 4,649 37.7%
HELP 139 1.1%
EXPLAIN 178 1.4%
SET/RESET 807 6.5%
SHOW 36 0.3%
ADD ON (AND, OR, AND NOT) 191 1.5%
LOGON or LOGOFF 1,479 12.0%
COMMENT 0 0.0%
USE 33 0.3%
OTHER 409 3.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.9%
SHORT 57.4%
LONG 14.0%
TAGS 0.2%
FIELDS 3.9%
PERIODICALS 1.6%
COMMENTS 0.0%
Other 16.0%
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 1,095 23.0% 242 22.1% 15 110.9 535.9
EXACT AUTHOR 71 1.5% 18 25.4% 9 263.2 1547.5
CORPORATE AUTHOR 77 1.6% 18 23.4% 18 158.4 512.7
EXACT CORPORATE 64 1.3% 51 79.7% 11 35.9 57.4
TITLE WORD 1,372 28.8% 434 31.6% 8 365.2 3097.5
EXACT TITLE/SERI 1,538 32.2% 492 32.0% 3 137.0 993.7
EXACT JOURNAL 15 0.3% 9 60.0% 2 46.2 108.7
SUBJECT 132 2.8% 27 20.5% 17 396.6 1154.5
EXACT SUBJECT 8 0.2% 6 75.0% 42 41.5 57.3
SERIES 29 0.6% 11 37.9% 9 31.5 89.8
CONFERENCE 1 0.0% 1 100% 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 18 0.4% 9 50.0% 19 108.6 236.0
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 3 0.1% 3 100% 0 0.0 0.0
GE 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 6 0.1% 5 83.3% 1 1.0 0.0
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 62 1.3% 24 38.7% 1 1.0 0.0
PLACE OF PUBL. 3 0.1% 0 0.0% 1 5.0 6.9
UNIFORM TITLE 10 0.2% 5 50.0% 733 506.2 453.6
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 65 1.4% 31 47.7% 7 26.5 45.2
EXACT PE 12 0.3% 3 25.0% 2 2.2 1.6
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 189 4.0% 69 36.5% 2 39.0 218.9
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 368 8.4% 112 30.4% 8 40.4 114.3
Single 4,025 91.6% 1,231 30.6% 6 227.2 1946.2
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 6:43
Average session length (minutes:seconds) 11:25
Longest session recorded (minutes:seconds) 505:50
Average number of searches completed per session 3.5
Retrievals per search - median 3.0
Retrievals per search - average 183.3
Retrievals per search - standard deviation 2587.9
Percent of searches completed with 0 results 34.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,579 40.0%
DISPLAY (excluding automatic displays) 2,808 24.5%
HELP 585 5.1%
EXPLAIN 567 4.9%
SET/RESET 502 4.4%
SHOW 62 0.5%
ADD ON (AND, OR, AND NOT) 129 1.1%
LOGON or LOGOFF 1,745 15.2%
COMMENT 1 0.0%
USE 7 0.1%
OTHER 472 4.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 83.0%
LONG 6.9%
TAGS 0.3%
FIELDS 1.4%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 3.4%
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 1,325 27.8% 295 22.3% 14 29.5 57.4
EXACT AUTHOR 3 0.1% 1 33.3% 8 8.0 9.9
TITLE WORD 1,380 29.0% 476 34.5% 8 74.1 230.8
EXACT TITLE 82 1.7% 55 67.1% 2 60.1 171.6
SUBJECT 1,659 34.8% 699 42.1% 24 708.7 5536.8
EXACT SUBJECT 81 1.7% 42 51.9% 70 179.0 322.8
EXACT JOURNAL 45 0.9% 16 35.6% 622 810.8 788.4
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 65 1.4% 26 40.0% 5 1028.8 6356.6
EXACT PE 22 0.5% 4 18.2% 4 22.0 75.2
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 99 2.1% 32 32.3% 2 5.0 8.5
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 193 4.2% 67 34.7% 2 10.7 34.6
Single 4,375 95.8% 1,512 34.6% 15 296.2 3307.4
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 7:56
Average session length (minutes:seconds) 11:36
Longest session recorded (minutes:seconds) 180:01
Average number of searches completed per session 4.0
Retrievals per search - median 4.0
Retrievals per search - average 121.5
Retrievals per search - standard deviation 998.8
Percent of searches completed with 0 results 32.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,603 35.0%
DISPLAY (excluding automatic displays) 5,827 36.4%
HELP 514 3.2%
EXPLAIN 452 2.8%
SET/RESET 935 5.8%
SHOW 130 0.8%
ADD ON (AND, OR, AND NOT) 117 0.7%
LOGON or LOGOFF 1,574 9.8%
COMMENT 1 0.0%
USE 8 0.1%
OTHER 832 5.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.4%
SHORT 79.9%
LONG 4.9%
TAGS 0.0%
FIELDS 1.5%
PERIODICALS 11.0%
COMMENTS 0.0%
Other 2.2%
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 467 8.1% 146 31.3% 11 29.1 51.1
EXACT AUTHOR 4 0.1% 2 50.0% 2 2.0 0.0
CORPORATE AUTHOR 21 0.4% 21 100% 0 0.0 0.0
EXACT CORPORATE 1 0.0% 1 100% 0 0.0 0.0
TITLE WORD 1,340 23.2% 482 36.0% 9 88.3 497.7
EXACT TITLE 57 1.0% 25 43.9% 2 70.9 309.4
SUBJECT 3,017 52.1% 927 30.7% 26 181.1 840.1
EXACT SUBJECT 104 1.8% 64 61.5% 85 783.4 3564.2
EXACT JOURNAL 102 1.8% 56 54.9% 115 2324.0 8210.8
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 4 0.1% 0 0.0% 3 2.5 1.7
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 84 1.5% 24 28.6% 47 77.1 99.6
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 318 5.5% 70 22.0% 20 318.9 840.5
EXACT PE 226 3.9% 50 22.1% 5 26.7 63.5
RPE 8 0.1% 4 50.0% 18 17.0 16.2
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 0.6% 12 35.3% 15 107.7 237.6
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 194 3.5% 79 40.7% 16 73.1 163.0
Single 5,390 96.5% 1,722 31.9% 16 184.8 1240.0
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 6:30
Average session length (minutes:seconds) 9:30
Longest session recorded (minutes:seconds) 44:57
Average number of searches completed per session 2.9
Retrievals per search - median 2.0
Retrievals per search - average 63.7
Retrievals per search - standard deviation 264.8
Percent of searches completed with 0 results 40.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 462 35.1%
DISPLAY (excluding automatic displays) 368 27.9%
HELP 66 5.0%
EXPLAIN 64 4.9%
SET/RESET 53 4.0%
SHOW 7 0.5%
ADD ON (AND, OR, AND NOT) 16 1.2%
LOGON or LOGOFF 239 18.1%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 42 3.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.5%
SHORT 86.1%
LONG 7.5%
TAGS 0.0%
FIELDS 2.0%
PERIODICALS 2.0%
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 120 25.2% 49 40.8% 14 21.2 24.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 178 37.3% 57 32.0% 11 101.0 338.4
EXACT TITLE 10 2.1% 6 60.0% 4 4.5 4.4
EXACT JOURNAL 9 1.9% 1 11.1% 11 10.5 2.3
SUBJECT 125 26.2% 64 51.2% 13 103.6 195.6
EXACT SUBJECT 25 5.2% 10 40.0% 38 687.9 857.4
SERIES 1 0.2% 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 2 0.4% 1 50.0% 1 1.0 0.0
EXACT PE 5 1.0% 0 0.0% 7 7.2 5.0
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 15 3.2% 2 13.3% 11 8.8 5.0
Single 447 96.8% 187 41.8% 14 116.5 350.8
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 4:50
Average session length (minutes:seconds) 7:51
Longest session recorded (minutes:seconds) 38:35
Average number of searches completed per session 3.5
Retrievals per search - median 0.0
Retrievals per search - average 101.5
Retrievals per search - standard deviation 406.0
Percent of searches completed with 0 results 52.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 200 37.0%
DISPLAY (excluding automatic displays) 100 18.5%
HELP 39 7.2%
EXPLAIN 64 11.9%
SET/RESET 3 0.6%
SHOW 2 0.4%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 108 20.0%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 24 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 88.6%
LONG 8.1%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.6%
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 14 6.9% 7 50.0% 7 7.0 4.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 36 17.8% 13 36.1% 8 9.6 9.2
EXACT TITLE 5 2.5% 5 100% 0 0.0 0.0
EXACT JOURNAL 18 8.9% 12 66.7% 850 836.8 806.9
SUBJECT 116 57.4% 57 49.1% 8 254.8 637.4
EXACT SUBJECT 12 5.9% 11 91.7% 22 22.0 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 0.5% 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 2 1.0% 1 50.0% 48 48.0 0.0
Single 198 99.0% 104 52.5% 8 215.4 572.6
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 5:13
Average session length (minutes:seconds) 9:40
Longest session recorded (minutes:seconds) 193:28
Average number of searches completed per session 3.2
Retrievals per search - median 1.0
Retrievals per search - average 75.1
Retrievals per search - standard deviation 621.3
Percent of searches completed with 0 results 42.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,913 34.2%
DISPLAY (excluding automatic displays) 1,526 27.3%
HELP 359 6.4%
EXPLAIN 391 7.0%
SET/RESET 126 2.3%
SHOW 39 0.7%
ADD ON (AND, OR, AND NOT) 42 0.8%
LOGON or LOGOFF 956 17.1%
COMMENT 0 0.0%
USE 3 0.1%
OTHER 234 4.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 82.4%
LONG 6.6%
TAGS 0.0%
FIELDS 1.3%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 3.5%
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 219 11.3% 80 36.5% 19 50.6 90.1
EXACT AUTHOR 5 0.3% 3 60.0% 5 5.0 0.0
CORPORATE AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CORPORATE 1 0.1% 1 100% 0 0.0 0.0
TITLE WORD 531 27.4% 236 44.4% 5 48.9 192.6
EXACT TITLE 62 3.2% 26 41.9% 1 8.4 19.0
ABSTRACT 3 0.2% 1 33.3% 112 112.0 0.0
SUBJECT 977 50.4% 418 42.8% 28 160.3 357.8
EXACT SUBJECT 45 2.3% 30 66.7% 22 55.3 74.4
EXACT JOURNAL 27 1.4% 13 48.1% 14 93.2 203.9
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 4 0.2% 3 75.0% 91 91.0 0.0
LANGUAGE 6 0.3% 2 33.3% 25 26.8 27.2
PERIODICAL 48 2.5% 11 22.9% 6 863.0 4200.5
EXACT PE 8 0.4% 0 0.0% 15 32.6 50.2
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 4 0.2% 1 25.0% 20 20.0 19.0
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 33 1.7% 24 72.7% 20 27.9 30.2
Single 1,873 98.3% 776 41.4% 13 132.8 823.4
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 5:35
Average session length (minutes:seconds) 10:27
Longest session recorded (minutes:seconds) 103:58
Average number of searches completed per session 3.3
Retrievals per search - median 3.0
Retrievals per search - average 75.9
Retrievals per search - standard deviation 352.1
Percent of searches completed with 0 results 32.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 643 33.0%
DISPLAY (excluding automatic displays) 673 34.5%
HELP 61 3.1%
EXPLAIN 78 4.0%
SET/RESET 33 1.7%
SHOW 7 0.4%
ADD ON (AND, OR, AND NOT) 22 1.1%
LOGON or LOGOFF 336 17.2%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 95 4.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 54.1%
LONG 38.6%
TAGS 0.0%
FIELDS 0.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 4.4%
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 57 7.5% 32 56.1% 7 144.3 324.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 207 27.1% 66 31.9% 10 48.1 80.6
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 329 43.1% 88 26.7% 8 134.1 528.5
EXACT TITLE 35 4.6% 17 48.6% 12 22.1 23.6
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 47 6.2% 14 29.8% 45 219.5 526.1
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 4 0.5% 1 25.0% 17 48.3 59.5
IMPRINT YEAR 22 2.9% 6 27.3% 4 51.2 133.3
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 0.1% 0 0.0% 37 37.0 0.0
INDEXED BY 3 0.4% 0 0.0% 85 85.0 0.0
NOTES 3 0.4% 0 0.0% 1 1.0 0.0
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 54 7.1% 11 20.4% 4 84.5 239.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 1 0.1% 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 117 18.2% 28 23.9% 4 55.0 178.0
Single 526 81.8% 178 33.8% 16 130.6 471.5
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 15.6%
Ten most frequent errors:
1. First word of command is invalid 35.0%
2. NS command - no next screen 16.1%
3. FIND command with invalid index name 10.7%
4. Index invalid in current database 5.5%
5. PS command - no previous screen 3.4%
6. Valid command at an inappropriate time 3.1%
7. Max. # of ports to a Z39 db are in use 2.7%
8. DISPLAY command contains invalid word 2.1%
9. Search term missing from search command 1.2%
10. Command contains escape or arrow key 1.1%
11. All others 19.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 27.6%
2. GUIDE (Z39.50 A&I DBS) 17.5%
3. FIND (Z39.50 DBS) 8.5%
4. COMMANDS (Z39.50 DBS) 5.7%
5. Unrecognized term 4.4%
6. INDEXES (ANTH DB) 4.2%
7. INDEXES (ARCH DB) 3.0%
8. INDEXES (RCAT DB) 2.3%
9. GUIDE (Z39.50 non-A&I DBS) 2.1%
10. INDEXES (CHI DB) 1.8%
11. All others 22.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.9%
2. First word of command is invalid 16.4%
3. DISPLAY command-complete in one screen 9.0%
4. FIND command with invalid index name 8.9%
5. FIND command with zero results 7.9%
6. F/BR with index invalid in current DB 6.1%
7. DISPLAY command-first of >1 screen 5.2%
8. DISPLAY command - middle of >1 screen 4.6%
9. FIND command retrieves 1 book 2.3%
10. MELVYL system could not process command 2.1%
11. All others 18.5%
Ten most frequent SHOW requests:
1. SEARCH 53.0%
2. HISTORY 24.4%
3. SETTINGS (Z39.50 DBS) 8.5%
4. DLA NEWS 2.5%
5. Z39.50 NEWS 2.1%
6. GLOSSARY 1.8%
7. DISPLAY 1.8%
8. LANGUAGE CODES 1.1%
9. LIBRARY NEWS 0.7%
10. PAGESIZE 0.7%
11. All others 3.5%