MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 02/01/01 through 02/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 362 579 941
Davis 92 1 93
Irvine 54 0 54
Los Angeles 13 131 144
Riverside 34 3 37
San Diego 59 31 90
San Francisco 10 0 10
Santa Barbara 93 82 175
Santa Cruz 17 12 29
Other - UC 0 31 31
Other-Network UC n/a 202 202
_______ ______ _____
734 1,072 1,806
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 16 37 292
2-4 a.m. 10 25 236
4-6 a.m. 10 13 247
6-8 a.m. 15 43 250
8-10 a.m. 178 373 2,670
10-12 a.m. 344 898 6,618
12-2 p.m. 349 1,135 9,181
2-4 p.m. 380 1,058 10,124
4-6 p.m. 300 848 8,947
6-8 p.m. 107 501 4,862
8-10 p.m. 51 192 2,439
10-12 p.m. 46 114 1,501
__________ __________ __________ _________________
Total: 1,806 5,237 47,367
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,357 1,620 2,977
Davis 182 1 183
Irvine 216 0 216
Los Angeles 20 402 422
Riverside 63 1 64
San Diego 184 66 250
San Francisco 14 0 14
Santa Barbara 344 247 591
Santa Cruz 116 21 137
Other - UC 0 67 67
Other-Network UC n/a 316 316
_______ ______ _____
2,496 2,741 5,237
Number of FIND commands by database
RLIN Bibliographic File 2,556
Anthropological Literature 1,107
Avery Index to Architectural Per. 965
History of Science & Technology 208
Index to Foreign Legal Periodical 18
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 273
English Short Title Catalogue 110
Total number of FIND commands 5,237
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 13,642 13,118 26,760
Davis 962 6 968
Irvine 2,309 0 2,309
Los Angeles 355 4,230 4,585
Riverside 293 49 342
San Diego 1,187 739 1,926
San Francisco 292 0 292
Santa Barbara 3,303 1,969 5,272
Santa Cruz 1,026 384 1,410
Other - UC 0 695 695
Other-Network UC n/a 2,808 2,808
_______ ______ _____
23,369 23,998 47,367
Number of Records Displayed by database
RLIN Bibliographic File 25,180
Anthropological Literature 7,478
Avery Index to Architectural Per. 8,909
History of Science & Technology 2,718
Index to Foreign Legal Periodical 89
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 2,247
English Short Title Catalogue 746
Total number of Records Displayed 47,367
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 907 50.2%
Anthropological Literature 376 20.8%
Avery Index to Architectural Per. 309 17.1%
History of Science & Technology 72 4.0%
Index to Foreign Legal Periodical 12 0.7%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 88 4.9%
English Short Title Catalogue 42 2.3%
Percent of searches done in the RCAT database 48.8%
Percent of searches done in the ANTH database 21.1%
Percent of searches done in the ARCH database 18.4%
Percent of searches done in the HSCI database 4.0%
Percent of searches done in the FLEG database 0.3%
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 5.2%
Percent of searches done in the ESTC database 2.1%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.0
Standard deviation in seconds 6.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:57
Average session length (minutes:seconds) 16:42
Longest session recorded (minutes:seconds) 154:26
Average number of searches completed per session 2.8
Retrievals per search - median 3.0
Retrievals per search - average 271.2
Retrievals per search - standard deviation 4743.3
Percent of searches completed with 0 results 25.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,435 32.3%
DISPLAY (excluding automatic displays) 3,024 40.2%
HELP 65 0.9%
EXPLAIN 118 1.6%
SET/RESET 616 8.2%
SHOW 42 0.6%
ADD ON (AND, OR, AND NOT) 121 1.6%
LOGON or LOGOFF 841 11.2%
COMMENT 0 0.0%
USE 4 0.1%
OTHER 263 3.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.8%
SHORT 53.8%
LONG 18.1%
TAGS 0.0%
FIELDS 5.2%
PERIODICALS 4.8%
COMMENTS 0.0%
Other 8.3%
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 705 26.9% 158 22.4% 17 107.8 348.8
EXACT AUTHOR 70 2.7% 7 10.0% 11 35.4 63.6
CORPORATE AUTHOR 28 1.1% 5 17.9% 20 184.7 546.8
EXACT CORPORATE 1 0.0% 0 0.0% 205 205.0 0.0
TITLE WORD 960 36.6% 280 29.2% 7 565.0 7758.0
EXACT TITLE/SERI 474 18.1% 119 25.1% 3 79.6 698.3
EXACT JOURNAL 1 0.0% 0 0.0% 4 4.0 0.0
SUBJECT 88 3.4% 23 26.1% 37 3056.4 15304.8
EXACT SUBJECT 7 0.3% 2 28.6% 1 989.4 1358.0
SERIES 29 1.1% 10 34.5% 17 73.3 122.1
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 6 0.2% 1 16.7% 5 4.8 2.2
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% 63 63.0 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 0 0.0% 0 0.0% 0 0.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 77 2.9% 18 23.4% 5 19.1 49.1
EXACT PE 30 1.1% 7 23.3% 3 11.7 22.4
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 147 5.6% 35 23.8% 3 13.3 30.5
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 214 8.9% 64 29.9% 4 24.6 89.4
Single 2,189 91.1% 537 24.5% 8 410.7 5858.7
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 7:07
Average session length (minutes:seconds) 12:35
Longest session recorded (minutes:seconds) 153:10
Average number of searches completed per session 2.9
Retrievals per search - median 3.0
Retrievals per search - average 126.5
Retrievals per search - standard deviation 961.1
Percent of searches completed with 0 results 35.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,050 40.1%
DISPLAY (excluding automatic displays) 634 24.2%
HELP 95 3.6%
EXPLAIN 99 3.8%
SET/RESET 166 6.3%
SHOW 11 0.4%
ADD ON (AND, OR, AND NOT) 57 2.2%
LOGON or LOGOFF 425 16.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 83 3.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
SHORT 79.4%
LONG 10.2%
TAGS 1.5%
FIELDS 2.4%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 0.7%
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 475 43.1% 113 23.8% 16 45.9 109.9
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 387 35.1% 181 46.8% 8 246.4 1659.7
EXACT TITLE 17 1.5% 10 58.8% 2 26.4 64.2
SUBJECT 162 14.7% 64 39.5% 33 550.3 1829.1
EXACT SUBJECT 18 1.6% 8 44.4% 14 138.3 264.4
EXACT JOURNAL 19 1.7% 9 47.4% 347 690.0 978.3
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 6 0.5% 1 16.7% 4 19.2 25.7
EXACT PE 2 0.2% 0 0.0% 56 55.5 75.7
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 16 1.5% 4 25.0% 3 5.3 7.7
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 54 5.2% 30 55.6% 3 5.3 6.4
Single 994 94.8% 330 33.2% 16 195.4 1181.4
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 7:12
Average session length (minutes:seconds) 11:18
Longest session recorded (minutes:seconds) 126:02
Average number of searches completed per session 3.1
Retrievals per search - median 5.0
Retrievals per search - average 217.4
Retrievals per search - standard deviation 2045.0
Percent of searches completed with 0 results 29.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 928 31.9%
DISPLAY (excluding automatic displays) 1,050 36.1%
HELP 99 3.4%
EXPLAIN 84 2.9%
SET/RESET 86 3.0%
SHOW 22 0.8%
ADD ON (AND, OR, AND NOT) 37 1.3%
LOGON or LOGOFF 460 15.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 143 4.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.0%
SHORT 67.7%
LONG 27.7%
TAGS 0.2%
FIELDS 2.1%
PERIODICALS 0.2%
COMMENTS 0.0%
Other 1.1%
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 84 8.5% 24 28.6% 19 40.1 53.0
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 145 14.6% 43 29.7% 10 343.4 1993.0
EXACT TITLE 8 0.8% 4 50.0% 1 2.3 2.5
SUBJECT 689 69.6% 202 29.3% 26 259.0 2193.6
EXACT SUBJECT 3 0.3% 2 66.7% 13 13.0 0.0
EXACT JOURNAL 13 1.3% 7 53.8% 1,448 6952.0 14102.5
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 39 3.9% 9 23.1% 58 79.2 129.6
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 3 0.3% 1 33.3% 859 858.5 1202.8
EXACT PE 1 0.1% 0 0.0% 18 18.0 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% 9 9.0 11.3
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 51 5.5% 14 27.4% 17 68.4 119.5
Single 876 94.5% 263 30.0% 24 333.3 2557.6
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 3:25
Average session length (minutes:seconds) 7:37
Longest session recorded (minutes:seconds) 55:14
Average number of searches completed per session 2.9
Retrievals per search - median 1.0
Retrievals per search - average 107.4
Retrievals per search - standard deviation 766.3
Percent of searches completed with 0 results 45.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 208 35.7%
DISPLAY (excluding automatic displays) 129 22.1%
HELP 36 6.2%
EXPLAIN 47 8.1%
SET/RESET 8 1.4%
SHOW 4 0.7%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 126 21.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 25 4.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.6%
SHORT 85.7%
LONG 7.7%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 1.2%
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 50 24.0% 27 54.0% 29 52.4 57.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 94 45.2% 38 40.4% 12 56.4 186.8
EXACT TITLE 2 1.0% 1 50.0% 8 8.0 0.0
EXACT JOURNAL 3 1.4% 3 100% 0 0.0 0.0
SUBJECT 56 26.9% 23 41.1% 34 544.2 1870.3
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 2 1.0% 1 50.0% 6 6.0 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 0 0.0% 0 0.0% 0 0.0 0.0
Single 208 100% 94 45.2% 15 195.9 1028.7
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 12:36
Average session length (minutes:seconds) 15:04
Longest session recorded (minutes:seconds) 35:15
Average number of searches completed per session 1.5
Retrievals per search - median 1.5
Retrievals per search - average 13.9
Retrievals per search - standard deviation 32.7
Percent of searches completed with 0 results 27.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 18 26.1%
DISPLAY (excluding automatic displays) 13 18.8%
HELP 2 2.9%
EXPLAIN 6 8.7%
SET/RESET 7 10.1%
SHOW 1 1.4%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 19 27.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 3 4.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 94.4%
LONG 5.6%
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 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 10 55.6% 4 40.0% 2 5.0 6.3
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 6 33.3% 1 16.7% 2 3.0 3.4
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 2 11.1% 0 0.0% 103 103.0 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 18 100% 5 27.8% 2 19.3 37.4
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 4:43
Average session length (minutes:seconds) 10:24
Longest session recorded (minutes:seconds) 52:45
Average number of searches completed per session 3.1
Retrievals per search - median 2.0
Retrievals per search - average 117.1
Retrievals per search - standard deviation 477.0
Percent of searches completed with 0 results 41.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 261 35.2%
DISPLAY (excluding automatic displays) 200 27.0%
HELP 37 5.0%
EXPLAIN 51 6.9%
SET/RESET 17 2.3%
SHOW 2 0.3%
ADD ON (AND, OR, AND NOT) 12 1.6%
LOGON or LOGOFF 134 18.1%
COMMENT 0 0.0%
USE 2 0.3%
OTHER 26 3.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.4%
SHORT 69.1%
LONG 26.1%
TAGS 0.0%
FIELDS 1.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 2.8%
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 25 9.4% 11 44.0% 21 20.7 20.2
EXACT AUTHOR 1 0.4% 0 0.0% 5 5.0 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 58 21.9% 22 37.9% 7 47.6 139.7
EXACT TITLE 5 1.9% 4 80.0% 1 1.0 0.0
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 160 60.4% 60 37.5% 34 253.5 656.6
EXACT SUBJECT 6 2.3% 5 83.3% 53 53.0 0.0
EXACT JOURNAL 6 2.3% 2 33.3% 296 1131.5 1881.8
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 4 1.5% 0 0.0% 25 25.0 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 4 1.5% 0 0.0% 25 25.0 0.0
Single 257 98.5% 104 40.5% 22 208.1 623.1
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 4:44
Average session length (minutes:seconds) 9:32
Longest session recorded (minutes:seconds) 46:23
Average number of searches completed per session 2.6
Retrievals per search - median 3.0
Retrievals per search - average 20.7
Retrievals per search - standard deviation 70.9
Percent of searches completed with 0 results 27.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 110 31.2%
DISPLAY (excluding automatic displays) 125 35.4%
HELP 5 1.4%
EXPLAIN 27 7.6%
SET/RESET 10 2.8%
SHOW 1 0.3%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 65 18.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 10 2.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.6%
SHORT 55.6%
LONG 32.6%
TAGS 0.0%
FIELDS 0.7%
PERIODICALS 4.2%
COMMENTS 0.0%
Other 1.4%
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 1 0.8% 1 100% 0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 42 32.3% 10 23.8% 11 25.0 38.2
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 CORP. AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 63 48.5% 18 28.6% 5 30.9 104.8
EXACT TITLE 2 1.5% 0 0.0% 15 14.5 14.8
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 2 1.5% 2 100% 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 16 12.3% 7 43.8% 2 4.3 5.2
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 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
DATE 2 1.5% 0 0.0% 315 314.5 423.6
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 2 1.5% 0 0.0% 29 28.5 38.9
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 20 18.2% 8 40.0% 3 55.8 175.9
Single 90 81.8% 22 24.4% 8 23.6 51.9
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 13.1%
Ten most frequent errors:
1. First word of command is invalid 27.6%
2. NS command - no next screen 21.9%
3. FIND command with invalid index name 10.8%
4. Index invalid in current database 4.1%
5. PS command - no previous screen 2.6%
6. Max. # of ports to a Z39 db are in use 2.5%
7. DISPLAY command contains invalid word 2.3%
8. Valid command at an inappropriate time 1.7%
9. Search term missing from search command 1.5%
10. Z39.50 host unable to process search 1.4%
11. All others 23.7%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 17.1%
2. LOCATE (Z39.50 DBS) 15.0%
3. FIND (Z39.50 DBS) 9.0%
4. Unrecognized term 6.7%
5. COMMANDS (Z39.50 DBS) 4.9%
6. INDEXES (RCAT DB) 4.4%
7. INDEXES (ANTH DB) 2.8%
8. LOCATE (Z39.50 DBS) 2.5%
9. GUIDE (Z39.50 non-A&I DBS) 2.3%
10. INDEXES (ARCH DB) 1.6%
11. All others 33.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.8%
2. First word of command is invalid 14.8%
3. FIND command with invalid index name 9.3%
4. DISPLAY command-complete in one screen 8.3%
5. FIND command with zero results 7.5%
6. DISPLAY command-first of >1 screen 5.8%
7. DISPLAY command - middle of >1 screen 4.0%
8. F/BR with index invalid in current DB 3.8%
9. MELVYL system could not process command 2.1%
10. NS command - no next screen 1.7%
11. All others 20.9%
Ten most frequent SHOW requests:
1. HISTORY 36.1%
2. SEARCH 26.5%
3. Z39.50 NEWS 6.0%
4. SETTINGS (Z39.50 DBS) 6.0%
5. GLOSSARY 4.8%
6. DOWNLOADING 3.6%
7. OCLC/RLG STATISTICS DIRECTORY 2.4%
8. SYSTEM NEWS 2.4%
9. T800 1.2%
10. BIBLIOGRAPHIC SOFTWARE 1.2%
11. All others 9.6%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)