MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 08/01/00 through 08/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 317 467 784
Davis 117 9 126
Irvine 92 0 92
Los Angeles 119 174 293
Riverside 46 2 48
San Diego 37 90 127
San Francisco 15 0 15
Santa Barbara 126 60 186
Santa Cruz 42 5 47
Other - UC 4 19 23
Other-Network UC n/a 248 248
_______ ______ _____
915 1,074 1,989
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2 4 4
2-4 a.m. 7 12 75
4-6 a.m. 1 3 3
6-8 a.m. 27 42 556
8-10 a.m. 243 573 4,761
10-12 a.m. 467 1,259 8,737
12-2 p.m. 420 1,456 12,155
2-4 p.m. 417 1,629 14,579
4-6 p.m. 271 934 7,848
6-8 p.m. 72 159 1,378
8-10 p.m. 36 87 633
10-12 p.m. 26 68 305
__________ __________ __________ _________________
Total: 1,989 6,226 51,034
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,122 1,222 2,344
Davis 194 21 215
Irvine 211 0 211
Los Angeles 1,177 378 1,555
Riverside 55 3 58
San Diego 127 199 326
San Francisco 37 0 37
Santa Barbara 473 235 708
Santa Cruz 66 9 75
Other - UC 9 46 55
Other-Network UC n/a 642 642
_______ ______ _____
3,471 2,755 6,226
Number of FIND commands by database
RLIN Bibliographic File 4,597
Anthropological Literature 731
Avery Index to Architectural Per. 408
History of Science & Technology 105
Index to Foreign Legal Periodical 41
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 112
English Short Title Catalogue 232
Total number of FIND commands 6,226
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,052 9,281 19,333
Davis 1,727 174 1,901
Irvine 2,865 0 2,865
Los Angeles 6,874 3,596 10,470
Riverside 491 3 494
San Diego 1,114 3,020 4,134
San Francisco 285 0 285
Santa Barbara 3,512 1,857 5,369
Santa Cruz 788 62 850
Other - UC 41 387 428
Other-Network UC n/a 4,905 4,905
_______ ______ _____
27,749 23,285 51,034
Number of Records Displayed by database
RLIN Bibliographic File 36,374
Anthropological Literature 5,725
Avery Index to Architectural Per. 3,678
History of Science & Technology 583
Index to Foreign Legal Periodical 167
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 1,608
English Short Title Catalogue 2,899
Total number of Records Displayed 51,034
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,400 70.4%
Anthropological Literature 287 14.4%
Avery Index to Architectural Per. 110 5.5%
History of Science & Technology 48 2.4%
Index to Foreign Legal Periodical 16 0.8%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 51 2.6%
English Short Title Catalogue 77 3.9%
Percent of searches done in the RCAT database 73.8%
Percent of searches done in the ANTH database 11.7%
Percent of searches done in the ARCH database 6.6%
Percent of searches done in the HSCI database 1.7%
Percent of searches done in the FLEG database 0.7%
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 1.8%
Percent of searches done in the ESTC database 3.7%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.9
Standard deviation in seconds 6.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:26
Average session length (minutes:seconds) 15:06
Longest session recorded (minutes:seconds) 197:24
Average number of searches completed per session 3.3
Retrievals per search - median 3.0
Retrievals per search - average 187.9
Retrievals per search - standard deviation 4829.5
Percent of searches completed with 0 results 23.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,320 32.2%
DISPLAY (excluding automatic displays) 5,873 43.8%
HELP 62 0.5%
EXPLAIN 89 0.7%
SET/RESET 807 6.0%
SHOW 52 0.4%
ADD ON (AND, OR, AND NOT) 277 2.1%
LOGON or LOGOFF 1,455 10.9%
COMMENT 0 0.0%
USE 2 0.0%
OTHER 459 3.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 7.1%
SHORT 47.3%
LONG 9.6%
TAGS 0.0%
FIELDS 3.9%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 28.1%
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 940 20.4% 177 18.8% 15 116.4 451.9
EXACT AUTHOR 19 0.4% 6 31.6% 22 32.2 35.6
CORPORATE AUTHOR 53 1.2% 17 32.1% 19 9587.1 51770.1
EXACT CORPORATE 4 0.1% 0 0.0% 751 751.0 0.0
TITLE WORD 1,538 33.4% 460 29.9% 5 264.1 2639.3
EXACT TITLE/SERI 518 11.3% 132 25.5% 4 145.1 1370.0
EXACT JOURNAL 1 0.0% 0 0.0% 13 13.0 0.0
SUBJECT 108 2.3% 36 33.3% 20 504.4 2318.3
EXACT SUBJECT 13 0.3% 5 38.5% 88 2781.3 7344.2
SERIES 39 0.8% 20 51.3% 9 63.0 229.7
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 7 0.2% 4 57.1% 33 37.0 14.4
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 2 0.0% 1 50.0% 14 14.0 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 3 0.1% 0 0.0% 1 1.0 0.0
PLACE OF PUBL. 1 0.0% 1 100% 0 0.0 0.0
UNIFORM TITLE 1 0.0% 0 0.0% 1 1.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 124 2.7% 40 32.3% 5 21.7 70.0
EXACT PE 26 0.6% 2 7.7% 7 42.0 91.2
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 1,206 26.2% 191 15.8% 4 15.5 137.4
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 318 7.4% 93 29.2% 3 11.4 36.7
Single 3,964 92.6% 906 22.9% 6 278.4 5894.4
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 3:21
Average session length (minutes:seconds) 7:14
Longest session recorded (minutes:seconds) 39:33
Average number of searches completed per session 2.5
Retrievals per search - median 3.0
Retrievals per search - average 173.5
Retrievals per search - standard deviation 1234.5
Percent of searches completed with 0 results 29.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 685 37.5%
DISPLAY (excluding automatic displays) 469 25.7%
HELP 61 3.3%
EXPLAIN 43 2.4%
SET/RESET 131 7.2%
SHOW 5 0.3%
ADD ON (AND, OR, AND NOT) 46 2.5%
LOGON or LOGOFF 315 17.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 72 3.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.5%
SHORT 77.4%
LONG 5.3%
TAGS 0.7%
FIELDS 2.3%
PERIODICALS 2.3%
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 259 36.6% 53 20.5% 8 29.2 69.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 234 33.1% 73 31.2% 6 112.1 281.0
EXACT TITLE 4 0.6% 2 50.0% 18 18.0 17.0
SUBJECT 183 25.9% 73 39.9% 17 924.0 3066.9
EXACT SUBJECT 1 0.1% 0 0.0% 14 14.0 0.0
EXACT JOURNAL 6 0.8% 2 33.3% 222 223.0 182.8
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 8 1.1% 5 62.5% 21 21.3 13.5
EXACT PE 3 0.4% 0 0.0% 2 2.0 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 9 1.3% 1 11.1% 3 2.9 1.7
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 22 3.2% 6 27.3% 3 97.8 242.2
Single 663 96.8% 197 29.7% 8 265.3 1538.3
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 9:47
Average session length (minutes:seconds) 11:03
Longest session recorded (minutes:seconds) 53:42
Average number of searches completed per session 3.7
Retrievals per search - median 6.0
Retrievals per search - average 95.5
Retrievals per search - standard deviation 322.0
Percent of searches completed with 0 results 26.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 379 37.6%
DISPLAY (excluding automatic displays) 319 31.6%
HELP 17 1.7%
EXPLAIN 23 2.3%
SET/RESET 47 4.7%
SHOW 7 0.7%
ADD ON (AND, OR, AND NOT) 29 2.9%
LOGON or LOGOFF 140 13.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 47 4.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 7.2%
SHORT 83.1%
LONG 4.3%
TAGS 0.0%
FIELDS 3.6%
PERIODICALS 0.3%
COMMENTS 0.0%
Other 1.5%
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 54 13.3% 16 29.6% 15 32.6 46.0
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 161 39.7% 57 35.4% 12 122.3 359.7
EXACT TITLE 2 0.5% 1 50.0% 6 6.0 0.0
SUBJECT 168 41.4% 40 23.8% 29 148.1 388.6
EXACT SUBJECT 1 0.2% 0 0.0% 1,969 1969.0 0.0
EXACT JOURNAL 3 0.7% 2 66.7% 2,119 2119.0 0.0
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 7 1.7% 0 0.0% 14 36.7 37.4
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 2 0.5% 1 50.0% 3 3.0 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 8 2.0% 1 12.5% 25 45.4 49.4
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 25 6.6% 10 40.0% 19 37.8 42.6
Single 354 93.4% 98 27.7% 19 142.3 396.6
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 1:51
Average session length (minutes:seconds) 5:17
Longest session recorded (minutes:seconds) 43:11
Average number of searches completed per session 2.2
Retrievals per search - median 1.0
Retrievals per search - average 30.3
Retrievals per search - standard deviation 141.3
Percent of searches completed with 0 results 47.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 105 33.5%
DISPLAY (excluding automatic displays) 78 24.9%
HELP 26 8.3%
EXPLAIN 8 2.6%
SET/RESET 4 1.3%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 85 27.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 7 2.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 83.7%
LONG 12.2%
TAGS 0.0%
FIELDS 1.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 3.1%
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 40 37.4% 17 42.5% 22 24.0 23.7
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 31 29.0% 13 41.9% 10 15.7 16.5
EXACT TITLE 6 5.6% 5 83.3% 9 9.0 0.0
EXACT JOURNAL 2 1.9% 1 50.0% 1,420 1420.0 0.0
SUBJECT 25 23.4% 14 56.0% 48 73.0 74.1
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 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 3 2.8% 0 0.0% 59 39.7 33.5
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 2 1.9% 0 0.0% 2 2.0 1.4
Single 103 98.1% 50 48.5% 24 59.9 195.2
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 1:57
Average session length (minutes:seconds) 6:01
Longest session recorded (minutes:seconds) 16:06
Average number of searches completed per session 2.6
Retrievals per search - median 0.0
Retrievals per search - average 5.2
Retrievals per search - standard deviation 15.8
Percent of searches completed with 0 results 63.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 40 36.4%
DISPLAY (excluding automatic displays) 19 17.3%
HELP 4 3.6%
EXPLAIN 15 13.6%
SET/RESET 4 3.6%
SHOW 1 0.9%
ADD ON (AND, OR, AND NOT) 1 0.9%
LOGON or LOGOFF 23 20.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 3 2.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.7%
SHORT 69.6%
LONG 17.4%
TAGS 0.0%
FIELDS 4.3%
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 13 32.5% 7 53.8% 7 6.5 4.3
EXACT AUTHOR 1 2.5% 0 0.0% 1 1.0 0.0
TITLE WORD 17 42.5% 13 76.5% 12 20.0 23.9
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 9 22.5% 6 66.7% 5 30.7 48.0
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 40 100% 26 65.0% 7 15.1 24.6
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 5:52
Average session length (minutes:seconds) 13:58
Longest session recorded (minutes:seconds) 78:49
Average number of searches completed per session 2.2
Retrievals per search - median 2.0
Retrievals per search - average 38.4
Retrievals per search - standard deviation 104.4
Percent of searches completed with 0 results 41.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 110 36.3%
DISPLAY (excluding automatic displays) 61 20.1%
HELP 18 5.9%
EXPLAIN 11 3.6%
SET/RESET 13 4.3%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 2 0.7%
LOGON or LOGOFF 75 24.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 13 4.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 63.6%
LONG 35.1%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.3%
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 18 16.4% 4 22.2% 17 24.1 19.2
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 20 18.2% 15 75.0% 43 34.6 18.8
EXACT TITLE 2 1.8% 2 100% 0 0.0 0.0
ABSTRACT 3 2.7% 1 33.3% 16 16.0 12.7
SUBJECT 65 59.1% 21 32.3% 15 73.5 139.6
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 2 1.8% 1 50.0% 528 528.0 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 110 100% 44 40.0% 23 65.2 129.8
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 11:25
Average session length (minutes:seconds) 10:55
Longest session recorded (minutes:seconds) 68:36
Average number of searches completed per session 3.0
Retrievals per search - median 4.0
Retrievals per search - average 74.1
Retrievals per search - standard deviation 440.2
Percent of searches completed with 0 results 22.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 221 28.7%
DISPLAY (excluding automatic displays) 305 39.7%
HELP 6 0.8%
EXPLAIN 9 1.2%
SET/RESET 41 5.3%
SHOW 5 0.7%
ADD ON (AND, OR, AND NOT) 11 1.4%
LOGON or LOGOFF 140 18.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 31 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.3%
SHORT 53.2%
LONG 35.9%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 5.6%
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 1 0.4% 0 0.0% 13 13.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 66 24.1% 14 21.2% 13 74.4 160.8
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 135 49.3% 32 23.7% 5 65.3 265.9
EXACT TITLE 8 2.9% 1 12.5% 5 11.9 20.2
UNIFORM TITLE 3 1.1% 1 33.3% 1 1.0 0.0
EXACT UNIFORM TI 2 0.7% 1 50.0% 4 4.0 0.0
KEYWORD 4 1.5% 2 50.0% 21 21.0 14.1
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 43 15.7% 5 11.6% 3 8.8 23.0
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 0 0.0% 0 0.0% 0 0.0 0.0
INDEXED BY 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 4 1.5% 0 0.0% 2 1514.8 3026.8
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 7 2.6% 0 0.0% 6 9.7 14.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 1 0.4% 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 53 24.0% 5 9.4% 3 9.9 21.4
Single 168 76.0% 46 27.4% 11 133.2 601.2
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 10.7%
Ten most frequent errors:
1. First word of command is invalid 21.2%
2. NS command - no next screen 19.2%
3. FIND command with invalid index name 8.6%
4. Max. # of ports to a Z39 db are in use 6.2%
5. 1188 4.2%
6. DISPLAY command contains invalid word 4.0%
7. Index invalid in current database 3.7%
8. Z39.50 host unable to process search 2.2%
9. 1187 2.0%
10. PS command - no previous screen 1.5%
11. All others 27.2%
Ten most frequent EXPLAIN requests:
1. FIND (Z39.50 DBS) 12.1%
2. INDEXES (RCAT DB) 11.6%
3. LOCATE (Z39.50 DBS) 11.1%
4. LOCATE (Z39.50 DBS) 9.1%
5. GUIDE (Z39.50 A&I DBS) 7.1%
6. Unrecognized term 6.6%
7. GUIDE (Z39.50 non-A&I DBS) 5.1%
8. INDEXES (ANTH DB) 3.5%
9. COMMANDS (Z39.50 DBS) 3.0%
10. DISPLAY (Z39.50 non-A&I DBS) 2.5%
11. All others 28.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.7%
2. First word of command is invalid 14.5%
3. FIND command with invalid index name 9.2%
4. F/BR with index invalid in current DB 8.9%
5. FIND command with zero results 6.6%
6. DISPLAY command-complete in one screen 5.9%
7. FIND command retrieves 1 book 4.3%
8. DISPLAY command-first of >1 screen 4.3%
9. FIND command retrieves >1 book 3.6%
10. DISPLAY command - middle of >1 screen 3.3%
11. All others 16.6%
Ten most frequent SHOW requests:
1. HISTORY 81.4%
2. SEARCH 8.6%
3. SETTINGS (Z39.50 DBS) 1.4%
4. GLOSSARY 1.4%
5. LINESIZE 1.4%
6. PAGESIZE 1.4%
7. PAGING 1.4%
8. DATABASES 1.4%
11. All others 1.4%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)