MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 05/01/02 through 05/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 332 284 616
Davis 51 0 51
Irvine 14 0 14
Los Angeles 0 242 242
Riverside 28 2 30
San Diego 42 9 51
San Francisco 1 0 1
Santa Barbara 85 18 103
Santa Cruz 40 38 78
Other - UC 2 29 31
Other-Network UC n/a 546 546
_______ ______ _____
595 1,168 1,763
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2 3 0
2-4 a.m. 1 4 37
4-6 a.m. 1 2 1
6-8 a.m. 23 37 399
8-10 a.m. 266 534 4,586
10-12 a.m. 398 1,062 9,167
12-2 p.m. 315 1,302 9,979
2-4 p.m. 410 1,500 10,648
4-6 p.m. 238 1,044 7,359
6-8 p.m. 50 260 1,429
8-10 p.m. 42 200 2,022
10-12 p.m. 17 149 635
__________ __________ __________ _________________
Total: 1,763 6,097 46,262
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,260 940 2,200
Davis 276 0 276
Irvine 48 0 48
Los Angeles 0 598 598
Riverside 35 2 37
San Diego 71 23 94
San Francisco 3 0 3
Santa Barbara 273 40 313
Santa Cruz 840 565 1,405
Other - UC 0 47 47
Other-Network UC n/a 1,076 1,076
_______ ______ _____
2,806 3,291 6,097
Number of FIND commands by database
RLIN Bibliographic File 5,497
Anthropological Literature 292
Avery Index to Architectural Per. 101
History of Science & Technology 55
Index to Foreign Legal Periodical 11
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 32
English Short Title Catalogue 109
Total number of FIND commands 6,097
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,880 7,607 13,487
Davis 2,230 0 2,230
Irvine 651 0 651
Los Angeles 0 9,673 9,673
Riverside 177 0 177
San Diego 806 188 994
San Francisco 63 0 63
Santa Barbara 2,493 368 2,861
Santa Cruz 5,753 3,677 9,430
Other - UC 0 458 458
Other-Network UC n/a 6,238 6,238
_______ ______ _____
18,053 28,209 46,262
Number of Records Displayed by database
RLIN Bibliographic File 41,255
Anthropological Literature 1,803
Avery Index to Architectural Per. 1,446
History of Science & Technology 282
Index to Foreign Legal Periodical 315
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 412
English Short Title Catalogue 749
Total number of Records Displayed 46,262
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,511 85.7%
Anthropological Literature 139 7.9%
Avery Index to Architectural Per. 29 1.6%
History of Science & Technology 26 1.5%
Index to Foreign Legal Periodical 8 0.5%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 21 1.2%
English Short Title Catalogue 29 1.6%
Percent of searches done in the RCAT database 90.2%
Percent of searches done in the ANTH database 4.8%
Percent of searches done in the ARCH database 1.7%
Percent of searches done in the HSCI database 0.9%
Percent of searches done in the FLEG database 0.2%
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 0.5%
Percent of searches done in the ESTC database 1.8%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.3
Standard deviation in seconds 6.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.5
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 14:11
Average session length (minutes:seconds) 21:29
Longest session recorded (minutes:seconds) 362:27
Average number of searches completed per session 3.6
Retrievals per search - median 2.0
Retrievals per search - average 131.5
Retrievals per search - standard deviation 2687.6
Percent of searches completed with 0 results 26.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,231 34.4%
DISPLAY (excluding automatic displays) 6,733 44.3%
HELP 44 0.3%
EXPLAIN 74 0.5%
SET/RESET 978 6.4%
SHOW 24 0.2%
ADD ON (AND, OR, AND NOT) 266 1.8%
LOGON or LOGOFF 1,449 9.5%
COMMENT 0 0.0%
USE 1 0.0%
OTHER 390 2.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.0%
SHORT 50.7%
LONG 12.6%
TAGS 0.0%
FIELDS 2.4%
PERIODICALS 11.8%
COMMENTS 0.0%
Other 12.4%
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 1,724 30.3% 332 19.3% 11 82.6 540.6
EXACT AUTHOR 2 0.0% 1 50.0% 117 117.0 0.0
CORPORATE AUTHOR 31 0.5% 6 19.4% 8 214.0 390.5
EXACT CORPORATE 9 0.2% 1 11.1% 16 32.6 37.2
TITLE WORD 1,593 28.0% 427 26.8% 5 365.7 5539.9
EXACT TITLE/SERI 1,096 19.3% 333 30.4% 2 30.7 381.2
EXACT JOURNAL 2 0.0% 1 50.0% 3 3.0 0.0
SUBJECT 37 0.7% 10 27.0% 12 729.9 3486.6
EXACT SUBJECT 1 0.0% 0 0.0% 69 69.0 0.0
SERIES 43 0.8% 22 51.2% 3 28.6 61.8
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
FORM 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 9 0.2% 3 33.3% 4 23.0 34.4
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 0 0.0% 0 0.0% 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. 0 0.0% 0 0.0% 0 0.0 0.0
UNIFORM TITLE 2 0.0% 1 50.0% 8 8.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 462 8.1% 155 33.5% 4 301.2 2533.2
EXACT PE 63 1.1% 9 14.3% 6 86.1 339.0
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 610 10.7% 189 31.0% 3 6.0 15.2
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 465 8.9% 122 26.2% 4 13.9 47.9
Single 4,739 91.1% 1,242 26.2% 5 194.7 3324.4
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 4:31
Average session length (minutes:seconds) 7:22
Longest session recorded (minutes:seconds) 34:09
Average number of searches completed per session 2.1
Retrievals per search - median 2.0
Retrievals per search - average 148.1
Retrievals per search - standard deviation 1763.7
Percent of searches completed with 0 results 35.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 290 34.2%
DISPLAY (excluding automatic displays) 207 24.4%
HELP 50 5.9%
EXPLAIN 40 4.7%
SET/RESET 45 5.3%
SHOW 2 0.2%
ADD ON (AND, OR, AND NOT) 2 0.2%
LOGON or LOGOFF 183 21.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 29 3.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 83.0%
LONG 7.8%
TAGS 0.0%
FIELDS 2.2%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 1.5%
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 69 22.8% 13 18.8% 13 27.5 49.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 153 50.7% 68 44.4% 5 60.8 305.3
EXACT TITLE 4 1.3% 3 75.0% 1 1.0 0.0
SUBJECT 70 23.2% 24 34.3% 11 791.4 4408.2
EXACT SUBJECT 1 0.3% 0 0.0% 94 94.0 0.0
EXACT JOURNAL 1 0.3% 0 0.0% 32 32.0 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 3 1.0% 0 0.0% 4 4.7 3.1
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 0.3% 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 12 4.1% 6 50.0% 1 1.3 0.5
Single 278 95.9% 97 34.9% 9 238.9 2237.6
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 12:28
Average session length (minutes:seconds) 20:32
Longest session recorded (minutes:seconds) 115:58
Average number of searches completed per session 3.5
Retrievals per search - median 8.0
Retrievals per search - average 133.7
Retrievals per search - standard deviation 408.9
Percent of searches completed with 0 results 29.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 90 32.7%
DISPLAY (excluding automatic displays) 99 36.0%
HELP 8 2.9%
EXPLAIN 15 5.5%
SET/RESET 15 5.5%
SHOW 1 0.4%
ADD ON (AND, OR, AND NOT) 11 4.0%
LOGON or LOGOFF 29 10.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 7 2.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.9%
SHORT 83.2%
LONG 5.6%
TAGS 0.0%
FIELDS 8.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.9%
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 7 7.4% 2 28.6% 27 21.6 19.6
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 CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 19 20.2% 7 36.8% 10 42.8 67.8
EXACT TITLE 1 1.1% 0 0.0% 1 1.0 0.0
SUBJECT 59 62.8% 17 28.8% 27 277.6 604.6
EXACT SUBJECT 1 1.1% 0 0.0% 3 3.0 0.0
EXACT JOURNAL 5 5.3% 2 40.0% 17 44.7 55.9
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 1 1.1% 0 0.0% 6 6.0 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 1.1% 0 0.0% 6 6.0 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 3.3% 0 0.0% 6 6.7 1.2
Single 87 96.7% 28 32.2% 26 209.9 520.5
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 2:28
Average session length (minutes:seconds) 3:45
Longest session recorded (minutes:seconds) 13:50
Average number of searches completed per session 2.1
Retrievals per search - median 1.0
Retrievals per search - average 49.6
Retrievals per search - standard deviation 246.6
Percent of searches completed with 0 results 43.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 55 37.2%
DISPLAY (excluding automatic displays) 25 16.9%
HELP 4 2.7%
EXPLAIN 13 8.8%
SET/RESET 4 2.7%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 44 29.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 3 2.0%
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%
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 32 58.2% 14 43.8% 33 34.2 23.6
EXACT AUTHOR 1 1.8% 0 0.0% 4 4.0 0.0
TITLE WORD 4 7.3% 3 75.0% 269 269.0 0.0
EXACT TITLE 3 5.5% 0 0.0% 1 1.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 12 21.8% 5 41.7% 2 262.0 687.5
EXACT SUBJECT 3 5.5% 2 66.7% 2 2.0 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 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 55 100% 24 43.6% 19 88.0 325.5
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 4:18
Average session length (minutes:seconds) 6:30
Longest session recorded (minutes:seconds) 13:47
Average number of searches completed per session 1.4
Retrievals per search - median 1.0
Retrievals per search - average 542.2
Retrievals per search - standard deviation 753.3
Percent of searches completed with 0 results 45.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11 17.7%
DISPLAY (excluding automatic displays) 12 19.4%
HELP 9 14.5%
EXPLAIN 9 14.5%
SET/RESET 0 0.0%
SHOW 2 3.2%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 16 25.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 3 4.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 86.7%
LONG 13.3%
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 1 9.1% 0 0.0% 1 1.0 0.0
AUTHOR 1 9.1% 0 0.0% 3 3.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 2 18.2% 2 100% 0 0.0 0.0
EXACT TITLE 1 9.1% 1 100% 0 0.0 0.0
EXACT JOURNAL 2 18.2% 0 0.0% 1,573 1573.0 0.0
SUBJECT 4 36.4% 2 50.0% 1,407 1407.0 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 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 11 100% 5 45.5% 1,407 994.0 772.0
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 4:37
Average session length (minutes:seconds) 7:06
Longest session recorded (minutes:seconds) 18:30
Average number of searches completed per session 1.5
Retrievals per search - median 2.0
Retrievals per search - average 36.1
Retrievals per search - standard deviation 95.9
Percent of searches completed with 0 results 43.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 32 24.8%
DISPLAY (excluding automatic displays) 14 10.9%
HELP 18 14.0%
EXPLAIN 13 10.1%
SET/RESET 2 1.6%
SHOW 3 2.3%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 38 29.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 9 7.0%
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%
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 0 0.0% 0 0.0% 0 0.0 0.0
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 CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 8 25.0% 3 37.5% 6 17.2 16.3
EXACT TITLE 9 28.1% 5 55.6% 2 2.0 0.0
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 15 46.9% 6 40.0% 33 117.8 157.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 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 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 32 100% 14 43.8% 6 64.1 122.0
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 4:44
Average session length (minutes:seconds) 8:20
Longest session recorded (minutes:seconds) 34:37
Average number of searches completed per session 3.8
Retrievals per search - median 2.0
Retrievals per search - average 23.5
Retrievals per search - standard deviation 121.2
Percent of searches completed with 0 results 26.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 108 33.9%
DISPLAY (excluding automatic displays) 119 37.3%
HELP 5 1.6%
EXPLAIN 3 0.9%
SET/RESET 18 5.6%
SHOW 2 0.6%
ADD ON (AND, OR, AND NOT) 1 0.3%
LOGON or LOGOFF 50 15.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 13 4.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.2%
SHORT 57.7%
LONG 32.1%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
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 0 0.0% 0 0.0% 0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 26 16.6% 10 38.5% 4 90.5 305.9
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 53 33.8% 20 37.7% 3 28.9 50.5
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
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 0 0.0% 0 0.0% 0 0.0 0.0
IMPRINT YEAR 7 4.5% 2 28.6% 2 2.0 0.7
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 30 19.1% 0 0.0% 4 4.3 2.9
NOTES 4 2.5% 2 50.0% 14 14.0 18.4
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 2 1.3% 1 50.0% 1 1.0 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
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 35 22.3% 14 40.0% 4 11.9 17.2
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 49 45.4% 21 42.9% 3 9.3 15.5
Single 59 54.6% 7 11.9% 4 44.2 173.5
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. NS command - no next screen 27.2%
2. First word of command is invalid 19.9%
3. FIND command with invalid index name 9.8%
4. Z39.50 host unable to process search 4.6%
5. DISPLAY command contains invalid word 4.4%
6. Index invalid in current database 2.5%
7. Search term missing from search command 2.1%
8. DISPLAY command - no FIND results 2.0%
9. PS command - no previous screen 1.2%
10. Valid command at an inappropriate time 0.8%
11. All others 25.4%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 16.2%
2. LOCATE (Z39.50 DBS) 14.4%
3. FIND (Z39.50 DBS) 11.4%
4. COMMANDS (Z39.50 DBS) 8.4%
5. INDEXES (RCAT DB) 7.8%
6. GUIDE (Z39.50 non-A&I DBS) 7.2%
7. LOCATE (Z39.50 DBS) 6.0%
8. Unrecognized term 4.8%
9. G217 2.4%
10. G221 1.8%
11. All others 19.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.5%
2. First word of command is invalid 18.0%
3. DISPLAY command-complete in one screen 9.5%
4. FIND command with zero results 5.2%
5. DISPLAY command-first of >1 screen 5.2%
6. FIND command with invalid index name 4.3%
7. DISPLAY command - last of >1 screen 3.9%
8. DISPLAY command - middle of >1 screen 3.3%
9. PS command - no previous screen 2.0%
10. FIND command retrieves >1 book 2.0%
11. All others 17.0%
Ten most frequent SHOW requests:
1. HISTORY 82.4%
2. GLOSSARY 5.9%
3. SEARCH 5.9%
4. SYSTEM NEWS 2.9%
5. TIMEOUT SETTING 2.9%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)