MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 01/01/99 through 01/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 565 717 1,282
Davis 433 0 433
Irvine 172 0 172
Los Angeles 152 356 508
Riverside 202 10 212
San Diego 68 137 205
San Francisco 56 4 60
Santa Barbara 415 223 638
Santa Cruz 270 101 371
Other - UC 31 46 77
Other-Network UC n/a 291 291
_______ ______ _____
2,364 1,885 4,249
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 26 51 1,253
2-4 a.m. 2 14 125
4-6 a.m. 0 0 0
6-8 a.m. 53 104 1,156
8-10 a.m. 339 985 6,064
10-12 a.m. 790 2,521 18,122
12-2 p.m. 840 2,693 22,904
2-4 p.m. 1,030 3,304 27,268
4-6 p.m. 630 1,963 13,953
6-8 p.m. 269 867 9,337
8-10 p.m. 164 571 5,680
10-12 p.m. 106 309 2,906
__________ __________ __________ _________________
Total: 4,249 13,382 108,768
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,936 2,037 3,973
Davis 1,175 0 1,175
Irvine 550 0 550
Los Angeles 524 1,058 1,582
Riverside 620 43 663
San Diego 191 329 520
San Francisco 182 10 192
Santa Barbara 1,883 726 2,609
Santa Cruz 951 317 1,268
Other - UC 103 153 256
Other-Network UC n/a 594 594
_______ ______ _____
8,115 5,267 13,382
Number of FIND commands by database
RLIN Bibliographic File 4,695
Anthropological Literature 3,732
Avery Index to Architectural Per. 2,361
History of Science & Technology 509
Index to Foreign Legal Periodical 65
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,437
English Short Title Catalogue 583
Total number of FIND commands 13,382
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17,659 18,709 36,368
Davis 8,673 0 8,673
Irvine 4,132 0 4,132
Los Angeles 4,046 9,773 13,819
Riverside 5,120 402 5,522
San Diego 1,318 2,659 3,977
San Francisco 2,744 71 2,815
Santa Barbara 11,814 6,728 18,542
Santa Cruz 7,072 2,614 9,686
Other - UC 412 844 1,256
Other-Network UC n/a 3,978 3,978
_______ ______ _____
62,990 45,778 108,768
Number of Records Displayed by database
RLIN Bibliographic File 35,217
Anthropological Literature 30,481
Avery Index to Architectural Per. 23,032
History of Science & Technology 3,881
Index to Foreign Legal Periodical 180
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 10,828
English Short Title Catalogue 5,149
Total number of Records Displayed 108,768
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,635 38.5%
Anthropological Literature 1,114 26.2%
Avery Index to Architectural Per. 682 16.1%
History of Science & Technology 183 4.3%
Index to Foreign Legal Periodical 39 0.9%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 448 10.5%
English Short Title Catalogue 148 3.5%
Percent of searches done in the RCAT database 35.1%
Percent of searches done in the ANTH database 27.9%
Percent of searches done in the ARCH database 17.6%
Percent of searches done in the HSCI database 3.8%
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 4.4%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.4
Standard deviation in seconds 8.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 1.4
Standard deviation in seconds 2.6
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 11:37
Average session length (minutes:seconds) 14:13
Longest session recorded (minutes:seconds) 491:27
Average number of searches completed per session 2.9
Retrievals per search - median 2.0
Retrievals per search - average 318.7
Retrievals per search - standard deviation 10847
Percent of searches completed with 0 results 28.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,404 33.7%
DISPLAY (excluding automatic displays) 4,851 37.1%
HELP 162 1.2%
EXPLAIN 231 1.8%
SET/RESET 1,000 7.7%
SHOW 44 0.3%
ADD ON (AND, OR, AND NOT) 291 2.2%
LOGON or LOGOFF 1,515 11.6%
COMMENT 1 0.0%
USE 36 0.3%
OTHER 525 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.6%
SHORT 55.6%
LONG 16.2%
TAGS 0.2%
FIELDS 2.8%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 14.3%
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 1,065 22.8% 241 22.6% 18 135.1 681.1
EXACT AUTHOR 27 0.6% 10 37.0% 27 29.2 30.9
CORPORATE AUTHOR 111 2.4% 35 31.5% 17 432.9 2465.6
EXACT CORPORATE 2 0.0% 2 100% 0 0.0 0.0
TITLE WORD 1,456 31.2% 461 31.7% 8 413.4 3252.6
EXACT TITLE/SERI 1,004 21.5% 288 28.7% 3 54.7 343.8
EXACT JOURNAL 14 0.3% 10 71.4% 21 1075.5 2113.7
SUBJECT 397 8.5% 87 21.9% 14 2812.7 41622.3
EXACT SUBJECT 22 0.5% 5 22.7% 16 136.2 269.1
SERIES 64 1.4% 27 42.2% 14 69.8 164.1
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 10 0.2% 2 20.0% 20 27.1 23.7
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% 0 0.0% 2 2.0 0.0
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 32 0.7% 18 56.3% 1 1.0 0.0
PLACE OF PUBL. 3 0.1% 0 0.0% 9 9.7 7.0
UNIFORM TITLE 1 0.0% 0 0.0% 2 2.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 66 1.4% 26 39.4% 2 73.6 259.5
EXACT PE 13 0.3% 7 53.8% 5 4.7 3.4
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 377 8.1% 110 29.2% 2 16.5 102.0
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 282 6.4% 90 31.9% 5 22.6 70.7
Single 4,095 93.6% 1,148 28.0% 8 500.6 13647.4
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 5:46
Average session length (minutes:seconds) 10:28
Longest session recorded (minutes:seconds) 138:40
Average number of searches completed per session 3.3
Retrievals per search - median 3.0
Retrievals per search - average 133.2
Retrievals per search - standard deviation 1036.3
Percent of searches completed with 0 results 35.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,635 40.0%
DISPLAY (excluding automatic displays) 2,261 24.9%
HELP 401 4.4%
EXPLAIN 471 5.2%
SET/RESET 410 4.5%
SHOW 48 0.5%
ADD ON (AND, OR, AND NOT) 97 1.1%
LOGON or LOGOFF 1,420 15.6%
COMMENT 0 0.0%
USE 2 0.0%
OTHER 347 3.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.3%
SHORT 81.6%
LONG 7.8%
TAGS 0.4%
FIELDS 0.7%
PERIODICALS 2.9%
COMMENTS 0.0%
Other 2.3%
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 1,154 30.9% 238 20.6% 12 23.7 35.3
EXACT AUTHOR 3 0.1% 2 66.7% 17 17.0 0.0
TITLE WORD 1,032 27.6% 384 37.2% 10 125.3 623.3
EXACT TITLE 80 2.1% 57 71.2% 1 56.9 256.0
SUBJECT 1,208 32.3% 544 45.0% 18 401.4 1581.0
EXACT SUBJECT 49 1.3% 29 59.2% 51 2567.1 7554.5
EXACT JOURNAL 44 1.2% 15 34.1% 113 1068.1 3684.1
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 75 2.0% 28 37.3% 5 710.6 2750.3
EXACT PE 23 0.6% 5 21.7% 2 2.7 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 66 1.8% 12 18.2% 4 20.2 40.9
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 110 3.0% 41 37.3% 4 22.4 57.4
Single 3,512 97.0% 1,231 35.1% 13 212.4 1312.3
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 6:54
Average session length (minutes:seconds) 10:46
Longest session recorded (minutes:seconds) 111:26
Average number of searches completed per session 3.5
Retrievals per search - median 4.0
Retrievals per search - average 141.4
Retrievals per search - standard deviation 948.2
Percent of searches completed with 0 results 32.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,272 34.4%
DISPLAY (excluding automatic displays) 2,263 34.2%
HELP 234 3.5%
EXPLAIN 207 3.1%
SET/RESET 387 5.9%
SHOW 36 0.5%
ADD ON (AND, OR, AND NOT) 89 1.3%
LOGON or LOGOFF 803 12.1%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 319 4.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.0%
SHORT 85.3%
LONG 6.2%
TAGS 0.0%
FIELDS 1.6%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 1.3%
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 222 9.6% 95 42.8% 9 22.5 48.2
EXACT AUTHOR 1 0.0% 0 0.0% 1 1.0 0.0
CORPORATE AUTHOR 6 0.3% 6 100% 0 0.0 0.0
EXACT CORPORATE 2 0.1% 2 100% 0 0.0 0.0
TITLE WORD 630 27.3% 225 35.7% 8 81.9 573.1
EXACT TITLE 18 0.8% 10 55.6% 5 16.1 34.4
SUBJECT 1,211 52.5% 344 28.4% 26 324.6 1493.2
EXACT SUBJECT 33 1.4% 22 66.7% 118 106.7 108.1
EXACT JOURNAL 32 1.4% 10 31.3% 114 326.5 416.2
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
ABSTRACT 15 0.7% 1 6.7% 23 50.9 76.9
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 13 0.6% 2 15.4% 237 339.5 551.0
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 69 3.0% 16 23.2% 4 39.8 90.1
EXACT PE 42 1.8% 12 28.6% 5 27.2 53.6
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 13 0.6% 3 23.1% 58 104.9 189.7
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 36 1.6% 8 22.2% 19 167.5 381.7
Single 2,233 98.4% 731 32.7% 14 216.3 1180.0
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 4:21
Average session length (minutes:seconds) 8:56
Longest session recorded (minutes:seconds) 77:55
Average number of searches completed per session 2.8
Retrievals per search - median 1.0
Retrievals per search - average 85.2
Retrievals per search - standard deviation 416.3
Percent of searches completed with 0 results 46.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 490 33.0%
DISPLAY (excluding automatic displays) 397 26.8%
HELP 69 4.7%
EXPLAIN 106 7.1%
SET/RESET 55 3.7%
SHOW 14 0.9%
ADD ON (AND, OR, AND NOT) 19 1.3%
LOGON or LOGOFF 271 18.3%
COMMENT 0 0.0%
USE 2 0.1%
OTHER 60 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 75.2%
LONG 12.7%
TAGS 1.3%
FIELDS 1.5%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 4.7%
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 115 23.1% 67 58.3% 12 17.3 17.2
EXACT AUTHOR 1 0.2% 0 0.0% 26 26.0 0.0
TITLE WORD 164 32.9% 67 40.9% 12 183.0 572.3
EXACT TITLE 7 1.4% 4 57.1% 3 5.3 5.9
EXACT JOURNAL 4 0.8% 2 50.0% 13 12.5 16.3
SUBJECT 165 33.1% 80 48.5% 50 256.6 764.1
EXACT SUBJECT 10 2.0% 7 70.0% 37 51.3 51.0
SERIES 11 2.2% 2 18.2% 2 140.7 416.4
EXACT SERIES 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 1 0.2% 1 100% 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 1 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 11 2.2% 0 0.0% 6 74.1 132.2
EXACT PE 2 0.4% 1 50.0% 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 6 1.2% 5 83.3% 63 63.0 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 11 2.3% 9 81.8% 1 1.0 0.0
Single 476 97.7% 218 45.8% 14 165.7 572.0
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 3:56
Average session length (minutes:seconds) 4:57
Longest session recorded (minutes:seconds) 15:57
Average number of searches completed per session 1.7
Retrievals per search - median 0.0
Retrievals per search - average 432.5
Retrievals per search - standard deviation 2338.8
Percent of searches completed with 0 results 63.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 64 27.6%
DISPLAY (excluding automatic displays) 37 15.9%
HELP 21 9.1%
EXPLAIN 27 11.6%
SET/RESET 9 3.9%
SHOW 1 0.4%
ADD ON (AND, OR, AND NOT) 1 0.4%
LOGON or LOGOFF 61 26.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 11 4.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 74.5%
LONG 14.9%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 6.4%
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 10 15.6% 8 80.0% 8 8.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 13 20.3% 12 92.3% 49 49.0 0.0
EXACT TITLE 1 1.6% 1 100% 0 0.0 0.0
EXACT JOURNAL 1 1.6% 1 100% 0 0.0 0.0
SUBJECT 35 54.7% 18 51.4% 5 67.6 187.0
EXACT SUBJECT 1 1.6% 1 100% 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 3 4.7% 0 0.0% 13,446 8965.0 7761.3
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 64 100% 41 64.1% 8 1222.2 3860.5
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 5:53
Average session length (minutes:seconds) 14:03
Longest session recorded (minutes:seconds) 145:46
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 81.8
Retrievals per search - standard deviation 372.6
Percent of searches completed with 0 results 40.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,388 32.8%
DISPLAY (excluding automatic displays) 1,208 28.6%
HELP 261 6.2%
EXPLAIN 233 5.5%
SET/RESET 113 2.7%
SHOW 33 0.8%
ADD ON (AND, OR, AND NOT) 49 1.2%
LOGON or LOGOFF 683 16.2%
COMMENT 0 0.0%
USE 46 1.1%
OTHER 213 5.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 84.9%
LONG 9.7%
TAGS 0.0%
FIELDS 1.0%
PERIODICALS 0.8%
COMMENTS 0.0%
Other 1.9%
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 204 14.6% 63 30.9% 14 28.5 42.9
EXACT AUTHOR 3 0.2% 3 100% 0 0.0 0.0
CORPORATE AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CORPORATE 3 0.2% 3 100% 0 0.0 0.0
TITLE WORD 321 23.0% 129 40.2% 6 34.7 102.9
EXACT TITLE 47 3.4% 27 57.4% 1 1.5 1.3
ABSTRACT 53 3.8% 18 34.0% 12 39.5 67.5
SUBJECT 673 48.1% 285 42.3% 21 248.0 670.7
EXACT SUBJECT 43 3.1% 29 67.4% 10 249.1 547.0
EXACT JOURNAL 32 2.3% 8 25.0% 24 155.0 237.7
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 1 0.1% 0 0.0% 3 3.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 11 0.8% 2 18.2% 6 91.4 255.6
EXACT PE 2 0.1% 0 0.0% 2 2.0 1.4
RPE 3 0.2% 1 33.3% 8 7.5 9.2
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 2 0.1% 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 1.1% 9 60.0% 7 9.5 9.6
Single 1,368 98.9% 552 40.3% 11 142.5 484.7
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 6:53
Average session length (minutes:seconds) 14:48
Longest session recorded (minutes:seconds) 307:31
Average number of searches completed per session 3.9
Retrievals per search - median 2.0
Retrievals per search - average 582.1
Retrievals per search - standard deviation 3991.3
Percent of searches completed with 0 results 36.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 572 35.7%
DISPLAY (excluding automatic displays) 566 35.3%
HELP 57 3.6%
EXPLAIN 81 5.1%
SET/RESET 42 2.6%
SHOW 7 0.4%
ADD ON (AND, OR, AND NOT) 11 0.7%
LOGON or LOGOFF 221 13.8%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 45 2.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.8%
SHORT 53.7%
LONG 28.5%
TAGS 4.8%
FIELDS 0.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 7.0%
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 140 20.4% 72 51.4% 5 415.8 1236.9
EXACT SUBJECT 3 0.4% 1 33.3% 74 74.0 67.9
AUTHOR 156 22.8% 60 38.5% 21 61.7 142.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 4 0.6% 3 75.0% 1,030 1030.0 0.0
EXACT CORP. AUTH 1 0.1% 0 0.0% 426 426.0 0.0
TITLE WORD 197 28.8% 52 26.4% 8 196.1 800.5
EXACT TITLE 17 2.5% 8 47.1% 22 243.2 382.3
UNIFORM TITLE 2 0.3% 0 0.0% 8 7.5 9.2
EXACT UNIFORM TI 3 0.4% 2 66.7% 24 24.0 0.0
KEYWORD 19 2.8% 4 21.1% 1,086 7234.9 13211.1
PUBLICATION TYPE 2 0.3% 0 0.0% 9,991 9991.0 0.0
PUBLISHER 1 0.1% 0 0.0% 457 457.0 0.0
IMPRINT YEAR 91 13.3% 37 40.7% 3 188.7 1362.1
COUNTRY CODE 2 0.3% 1 50.0% 481 481.0 0.0
SHELFMARK 4 0.6% 1 25.0% 196 5000.0 8486.7
HOLDING LIBRARY 5 0.7% 0 0.0% 2,132 1295.2 1145.8
INDEXED BY 7 1.0% 2 28.6% 361 14375.6 31740.6
NOTES 8 1.2% 1 12.5% 16 4973.7 6195.8
PLACE OF PUBL 3 0.4% 1 33.3% 1,832 1831.5 0.7
DATE 14 2.0% 2 14.3% 13 168.5 316.2
LANGUAGE 4 0.6% 1 25.0% 90 90.0 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 1 0.1% 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 114 20.0% 42 36.8% 3 22.8 129.4
Single 457 80.0% 165 36.1% 26 1153.9 5580.6
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 14.0%
Ten most frequent errors:
1. First word of command is invalid 31.6%
2. NS command - no next screen 16.8%
3. FIND command with invalid index name 12.3%
4. Index invalid in current database 6.8%
5. Max. # of ports to a Z39 db are in use 3.5%
6. PS command - no previous screen 2.4%
7. Valid command at an inappropriate time 2.3%
8. DISPLAY command contains invalid word 1.9%
9. Search term missing from search command 1.4%
10. SAVE command issued from a Z39.50 db 1.1%
11. All others 20.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 19.7%
2. GUIDE (Z39.50 A&I DBS) 16.7%
3. FIND (Z39.50 DBS) 8.1%
4. COMMANDS (Z39.50 DBS) 5.8%
5. INDEXES (ANTH DB) 5.3%
6. Unrecognized term 4.6%
7. INDEXES (RCAT DB) 3.9%
8. LOCATE (Z39.50 DBS) 3.1%
9. GUIDE (Z39.50 non-A&I DBS) 3.0%
10. INDEXES (ARCH DB) 2.1%
11. All others 27.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.5%
2. First word of command is invalid 16.1%
3. FIND command with invalid index name 8.4%
4. DISPLAY command-complete in one screen 7.7%
5. F/BR with index invalid in current DB 6.5%
6. FIND command with zero results 6.1%
7. DISPLAY command-first of >1 screen 4.2%
8. DISPLAY command - middle of >1 screen 3.9%
9. FIND command retrieves 1 book 2.9%
10. DISPLAY command - last of >1 screen 2.1%
11. All others 17.6%
Ten most frequent SHOW requests:
1. SEARCH 36.1%
2. HISTORY 32.8%
3. SETTINGS (Z39.50 DBS) 5.5%
4. GLOSSARY 5.5%
5. Z39.50 NEWS 4.4%
6. DLA NEWS 2.2%
7. LIBRARY LOCATIONS 1.6%
8. DATABASES 1.6%
9. EXPERIMENTS 1.1%
10. FORM NAMES (RCAT DB) 0.5%
11. All others 8.7%