MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 03/01/99 through 03/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 958 1,042 2,000
Davis 415 1 416
Irvine 282 0 282
Los Angeles 220 615 835
Riverside 294 8 302
San Diego 76 83 159
San Francisco 35 1 36
Santa Barbara 400 82 482
Santa Cruz 173 69 242
Other - UC 25 71 96
Other-Network UC n/a 195 195
_______ ______ _____
2,878 2,167 5,045
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 56 340 3,155
2-4 a.m. 12 73 917
4-6 a.m. 7 18 155
6-8 a.m. 60 155 3,785
8-10 a.m. 365 1,103 9,683
10-12 a.m. 822 2,456 23,771
12-2 p.m. 1,013 3,330 31,245
2-4 p.m. 1,208 4,147 34,281
4-6 p.m. 725 2,442 24,967
6-8 p.m. 381 1,342 13,582
8-10 p.m. 242 792 8,794
10-12 p.m. 154 459 5,184
__________ __________ __________ _________________
Total: 5,045 16,657 159,519
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,311 3,806 7,117
Davis 1,084 3 1,087
Irvine 1,003 0 1,003
Los Angeles 677 2,099 2,776
Riverside 999 17 1,016
San Diego 232 190 422
San Francisco 79 1 80
Santa Barbara 1,326 192 1,518
Santa Cruz 618 238 856
Other - UC 31 223 254
Other-Network UC n/a 528 528
_______ ______ _____
9,360 7,297 16,657
Number of FIND commands by database
RLIN Bibliographic File 5,309
Anthropological Literature 4,549
Avery Index to Architectural Per. 3,489
History of Science & Technology 519
Index to Foreign Legal Periodical 75
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,788
English Short Title Catalogue 928
Total number of FIND commands 16,657
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 29,756 39,946 69,702
Davis 8,791 53 8,844
Irvine 8,690 0 8,690
Los Angeles 6,713 27,802 34,515
Riverside 7,555 169 7,724
San Diego 1,242 1,804 3,046
San Francisco 907 5 912
Santa Barbara 9,039 1,942 10,981
Santa Cruz 4,061 1,831 5,892
Other - UC 460 4,442 4,902
Other-Network UC n/a 4,311 4,311
_______ ______ _____
77,214 82,305 159,519
Number of Records Displayed by database
RLIN Bibliographic File 54,027
Anthropological Literature 38,265
Avery Index to Architectural Per. 33,528
History of Science & Technology 4,763
Index to Foreign Legal Periodical 315
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 19,402
English Short Title Catalogue 9,219
Total number of Records Displayed 159,519
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,666 33.0%
Anthropological Literature 1,333 26.4%
Avery Index to Architectural Per. 928 18.4%
History of Science & Technology 185 3.7%
Index to Foreign Legal Periodical 31 0.6%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 635 12.6%
English Short Title Catalogue 267 5.3%
Percent of searches done in the RCAT database 31.9%
Percent of searches done in the ANTH database 27.3%
Percent of searches done in the ARCH database 20.9%
Percent of searches done in the HSCI database 3.1%
Percent of searches done in the FLEG database 0.5%
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 5.6%
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 7.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 1.5
Standard deviation in seconds 3.4
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 11:57
Average session length (minutes:seconds) 17:26
Longest session recorded (minutes:seconds) 159:22
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 196.8
Retrievals per search - standard deviation 2156.4
Percent of searches completed with 0 results 32.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,047 32.2%
DISPLAY (excluding automatic displays) 6,701 42.8%
HELP 188 1.2%
EXPLAIN 253 1.6%
SET/RESET 940 6.0%
SHOW 39 0.2%
ADD ON (AND, OR, AND NOT) 262 1.7%
LOGON or LOGOFF 1,710 10.9%
COMMENT 1 0.0%
USE 22 0.1%
OTHER 495 3.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.4%
SHORT 54.0%
LONG 11.6%
TAGS 0.8%
FIELDS 4.2%
PERIODICALS 0.8%
COMMENTS 0.0%
Other 22.2%
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 1,421 25.7% 337 23.7% 19 195.5 1204.1
EXACT AUTHOR 271 4.9% 106 39.1% 7 41.3 179.2
CORPORATE AUTHOR 98 1.8% 32 32.7% 23 3118.6 13968.5
EXACT CORPORATE 21 0.4% 7 33.3% 9 41.0 54.4
TITLE WORD 1,670 30.1% 473 28.3% 6 244.5 1665.7
EXACT TITLE/SERI 1,338 24.2% 579 43.3% 4 347.2 2833.0
EXACT JOURNAL 17 0.3% 10 58.8% 8 26.7 43.8
SUBJECT 196 3.5% 63 32.1% 19 924.1 6277.8
EXACT SUBJECT 12 0.2% 4 33.3% 25 233.0 427.7
SERIES 41 0.7% 21 51.2% 24 105.5 169.0
CONFERENCE 1 0.0% 0 0.0% 17 17.0 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 26 0.5% 3 11.5% 35 315.3 1126.1
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 1 0.0% 1 100% 0 0.0 0.0
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 14 0.3% 5 35.7% 1 1.0 0.0
PLACE OF PUBL. 10 0.2% 4 40.0% 3 10.2 19.0
UNIFORM TITLE 6 0.1% 3 50.0% 1 6.3 9.2
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 64 1.2% 32 50.0% 4 23.2 61.1
EXACT PE 14 0.3% 4 28.6% 2 8.3 16.9
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 318 5.7% 141 44.3% 3 20.2 56.7
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 530 10.6% 166 31.3% 5 241.3 3754.3
Single 4,482 89.4% 1,499 33.4% 9 316.7 2542.9
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 6:12
Average session length (minutes:seconds) 10:51
Longest session recorded (minutes:seconds) 119:47
Average number of searches completed per session 3.4
Retrievals per search - median 3.0
Retrievals per search - average 447.1
Retrievals per search - standard deviation 6632.6
Percent of searches completed with 0 results 35.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,431 39.6%
DISPLAY (excluding automatic displays) 2,666 23.8%
HELP 587 5.2%
EXPLAIN 616 5.5%
SET/RESET 481 4.3%
SHOW 70 0.6%
ADD ON (AND, OR, AND NOT) 118 1.1%
LOGON or LOGOFF 1,768 15.8%
COMMENT 1 0.0%
USE 1 0.0%
OTHER 444 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 82.7%
LONG 5.9%
TAGS 0.0%
FIELDS 1.6%
PERIODICALS 3.7%
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 1,096 24.2% 230 21.0% 16 39.1 80.6
EXACT AUTHOR 5 0.1% 1 20.0% 37 44.5 32.2
TITLE WORD 1,295 28.6% 457 35.3% 8 118.6 477.3
EXACT TITLE 117 2.6% 73 62.4% 1 41.5 103.6
SUBJECT 1,656 36.6% 708 42.8% 27 1872.4 14367.7
EXACT SUBJECT 118 2.6% 65 55.1% 123 1508.4 4354.9
EXACT JOURNAL 47 1.0% 22 46.8% 457 1090.6 1624.8
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 90 2.0% 28 31.1% 4 87.3 273.2
EXACT PE 45 1.0% 14 31.1% 6 57.3 228.7
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 56 1.2% 14 25.0% 4 12.4 16.2
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 110 2.5% 37 33.6% 2 20.2 54.2
Single 4,305 97.5% 1,538 35.7% 16 730.8 8476.7
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 7:10
Average session length (minutes:seconds) 11:00
Longest session recorded (minutes:seconds) 181:56
Average number of searches completed per session 3.8
Retrievals per search - median 3.0
Retrievals per search - average 146.7
Retrievals per search - standard deviation 1301.8
Percent of searches completed with 0 results 34.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,419 37.2%
DISPLAY (excluding automatic displays) 3,029 33.0%
HELP 269 2.9%
EXPLAIN 281 3.1%
SET/RESET 591 6.4%
SHOW 50 0.5%
ADD ON (AND, OR, AND NOT) 70 0.8%
LOGON or LOGOFF 991 10.8%
COMMENT 1 0.0%
USE 7 0.1%
OTHER 472 5.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.4%
SHORT 83.6%
LONG 4.6%
TAGS 0.0%
FIELDS 1.9%
PERIODICALS 6.6%
COMMENTS 0.0%
Other 3.0%
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 301 8.6% 113 37.5% 11 25.6 40.7
EXACT AUTHOR 2 0.1% 1 50.0% 13 13.0 0.0
CORPORATE AUTHOR 18 0.5% 18 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 990 28.3% 373 37.7% 9 103.5 619.8
EXACT TITLE 35 1.0% 17 48.6% 14 47.3 98.4
SUBJECT 1,878 53.6% 605 32.2% 26 268.1 1631.1
EXACT SUBJECT 26 0.7% 19 73.1% 2 10.9 20.7
EXACT JOURNAL 36 1.0% 16 44.4% 424 1242.9 1467.6
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 19 0.5% 9 47.4% 7 55.3 82.3
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 30 0.9% 5 16.7% 65 104.9 167.7
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 99 2.8% 18 18.2% 11 876.7 5150.8
EXACT PE 58 1.7% 12 20.7% 6 24.8 43.3
RPE 1 0.0% 0 0.0% 12 12.0 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 11 0.3% 4 36.4% 39 87.3 98.3
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 88 2.6% 34 38.6% 16 62.8 126.7
Single 3,326 97.4% 1,140 34.3% 18 231.0 1637.5
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 6:17
Average session length (minutes:seconds) 10:14
Longest session recorded (minutes:seconds) 73:52
Average number of searches completed per session 2.8
Retrievals per search - median 1.0
Retrievals per search - average 80.2
Retrievals per search - standard deviation 346.5
Percent of searches completed with 0 results 42.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 507 34.0%
DISPLAY (excluding automatic displays) 425 28.5%
HELP 78 5.2%
EXPLAIN 95 6.4%
SET/RESET 59 4.0%
SHOW 3 0.2%
ADD ON (AND, OR, AND NOT) 12 0.8%
LOGON or LOGOFF 264 17.7%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 47 3.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.3%
SHORT 71.3%
LONG 9.0%
TAGS 3.5%
FIELDS 1.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 10.8%
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 112 21.0% 58 51.8% 10 47.3 145.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 208 38.9% 59 28.4% 11 70.9 326.9
EXACT TITLE 3 0.6% 2 66.7% 1 1.0 0.0
EXACT JOURNAL 14 2.6% 8 57.1% 489 1016.5 1237.6
SUBJECT 157 29.4% 82 52.2% 56 250.2 598.8
EXACT SUBJECT 21 3.9% 9 42.9% 101 276.9 389.6
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 2 0.4% 1 50.0% 24 24.0 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 1 0.2% 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 16 3.0% 4 25.0% 11 30.8 42.3
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 27 5.3% 10 37.0% 9 24.4 36.8
Single 480 94.7% 203 42.3% 18 147.6 464.0
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 2:52
Average session length (minutes:seconds) 4:11
Longest session recorded (minutes:seconds) 20:18
Average number of searches completed per session 2.4
Retrievals per search - median 0.0
Retrievals per search - average 158.6
Retrievals per search - standard deviation 618.8
Percent of searches completed with 0 results 65.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 74 37.8%
DISPLAY (excluding automatic displays) 26 13.3%
HELP 19 9.7%
EXPLAIN 14 7.1%
SET/RESET 2 1.0%
SHOW 2 1.0%
ADD ON (AND, OR, AND NOT) 1 0.5%
LOGON or LOGOFF 53 27.0%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 5 2.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 78.1%
LONG 18.8%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 3.1%
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 4 5.2% 3 75.0% 61 61.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 18 23.4% 14 77.8% 20 110.3 192.7
EXACT TITLE 1 1.3% 1 100% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 52 67.5% 31 59.6% 59 542.6 1092.7
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 2 2.6% 0 0.0% 41 40.5 26.2
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 3 4.1% 1 33.3% 41 40.5 26.2
Single 71 95.9% 47 66.2% 60 492.3 1030.1
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 5:09
Average session length (minutes:seconds) 9:17
Longest session recorded (minutes:seconds) 154:57
Average number of searches completed per session 2.8
Retrievals per search - median 3.0
Retrievals per search - average 96.9
Retrievals per search - standard deviation 358.2
Percent of searches completed with 0 results 37.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,727 31.9%
DISPLAY (excluding automatic displays) 1,334 24.6%
HELP 404 7.5%
EXPLAIN 416 7.7%
SET/RESET 109 2.0%
SHOW 64 1.2%
ADD ON (AND, OR, AND NOT) 61 1.1%
LOGON or LOGOFF 1,058 19.5%
COMMENT 1 0.0%
USE 12 0.2%
OTHER 232 4.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.9%
SHORT 84.3%
LONG 6.6%
TAGS 0.0%
FIELDS 1.5%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 4.5%
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 221 12.8% 53 24.0% 9 26.1 46.2
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 1 0.1% 1 100% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 443 25.7% 176 39.7% 8 68.0 237.8
EXACT TITLE 36 2.1% 13 36.1% 1 55.1 186.0
ABSTRACT 15 0.9% 8 53.3% 3 7.4 11.9
SUBJECT 903 52.3% 338 37.4% 29 245.9 568.5
EXACT SUBJECT 48 2.8% 38 79.2% 60 394.3 735.5
EXACT JOURNAL 15 0.9% 9 60.0% 53 50.0 35.2
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 6 0.3% 1 16.7% 142 90.8 70.5
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 17 1.0% 9 52.9% 62 78.0 72.6
EXACT PE 16 0.9% 7 43.8% 3 2.9 2.0
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 5 0.3% 1 20.0% 38 34.3 9.8
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 0.5% 1 11.1% 23 60.3 68.2
Single 1,708 99.5% 652 38.2% 17 158.5 450.4
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 12:24
Average session length (minutes:seconds) 14:03
Longest session recorded (minutes:seconds) 222:05
Average number of searches completed per session 3.5
Retrievals per search - median 4.0
Retrievals per search - average 203.0
Retrievals per search - standard deviation 2438.8
Percent of searches completed with 0 results 29.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 896 31.1%
DISPLAY (excluding automatic displays) 1,179 40.9%
HELP 86 3.0%
EXPLAIN 106 3.7%
SET/RESET 62 2.2%
SHOW 10 0.3%
ADD ON (AND, OR, AND NOT) 32 1.1%
LOGON or LOGOFF 432 15.0%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 77 2.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.9%
SHORT 48.4%
LONG 42.1%
TAGS 0.0%
FIELDS 0.2%
PERIODICALS 0.5%
COMMENTS 0.0%
Other 1.8%
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 61 5.5% 36 59.0% 20 72.9 116.7
EXACT SUBJECT 1 0.1% 1 100% 0 0.0 0.0
AUTHOR 234 21.2% 69 29.5% 10 39.2 107.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 1 0.1% 1 100% 0 0.0 0.0
EXACT CORP. AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 462 41.9% 124 26.8% 10 119.6 841.4
EXACT TITLE 23 2.1% 7 30.4% 3 10.6 17.4
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 90 8.2% 24 26.7% 25 180.6 365.6
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 2 0.2% 1 50.0% 11 11.0 0.0
IMPRINT YEAR 169 15.3% 46 27.2% 5 9.5 20.0
COUNTRY CODE 0 0.0% 0 0.0% 0 0.0 0.0
SHELFMARK 4 0.4% 4 100% 0 0.0 0.0
HOLDING LIBRARY 13 1.2% 4 30.8% 32 4469.7 13225.1
INDEXED BY 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 7 0.6% 0 0.0% 27 82.1 80.5
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 28 2.5% 4 14.3% 13 3652.3 12140.6
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 3 0.3% 0 0.0% 2 5.7 6.4
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 5 0.5% 3 60.0% 2 2.0 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 208 23.2% 55 26.4% 5 18.4 67.3
Single 687 76.8% 214 31.1% 14 390.8 3405.1
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 14.3%
Ten most frequent errors:
1. First word of command is invalid 34.9%
2. NS command - no next screen 16.7%
3. FIND command with invalid index name 11.4%
4. Index invalid in current database 6.4%
5. Max. # of ports to a Z39 db are in use 3.0%
6. Valid command at an inappropriate time 2.7%
7. PS command - no previous screen 2.6%
8. DISPLAY command contains invalid word 2.5%
9. Search term missing from search command 1.1%
10. D ABS command in database w/o abstracts 1.0%
11. All others 17.6%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 24.3%
2. GUIDE (Z39.50 A&I DBS) 16.8%
3. FIND (Z39.50 DBS) 9.7%
4. COMMANDS (Z39.50 DBS) 5.3%
5. Unrecognized term 4.2%
6. INDEXES (ANTH DB) 3.9%
7. INDEXES (RCAT DB) 3.6%
8. GUIDE (Z39.50 non-A&I DBS) 3.1%
9. INDEXES (ARCH DB) 2.6%
10. INDEXES (CHI DB) 2.0%
11. All others 24.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.9%
2. First word of command is invalid 16.5%
3. FIND command with invalid index name 8.5%
4. DISPLAY command-complete in one screen 8.0%
5. FIND command with zero results 7.0%
6. F/BR with index invalid in current DB 6.9%
7. DISPLAY command-first of >1 screen 4.6%
8. DISPLAY command - middle of >1 screen 4.4%
9. DISPLAY command - last of >1 screen 2.6%
10. FIND command retrieves 1 book 2.1%
11. All others 16.4%
Ten most frequent SHOW requests:
1. HISTORY 41.5%
2. SEARCH 40.7%
3. SETTINGS (Z39.50 DBS) 5.9%
4. SYSTEM NEWS 3.4%
5. Z39.50 NEWS 2.5%
6. GLOSSARY 2.1%
7. SYSTEM1 NEWS 0.4%
8. SYSTEM2 NEWS 0.4%
9. SYSTEM4 NEWS 0.4%
10. LIBRARY NEWS 0.4%
11. All others 2.1%