MELVYL IAC DATABASES TELNET STATISTICS
Time period: 01/26/02 through 02/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 108 239 347
Davis 124 2 126
Irvine 60 0 60
Los Angeles 3 48 51
Riverside 13 14 27
San Diego 13 12 25
San Francisco 13 0 13
Santa Barbara 14 31 45
Santa Cruz 18 39 57
LBL 0 10 10
LLL 0 2 2
Los Alamos n/a 0 0
Other - UC 7 19 26
Stanford 4
Other-Network UC n/a 77 77
_______ ______ _____
373 493 870
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 25 520
2-4 a.m. 4 7 147
4-6 a.m. 2 8 22
6-8 a.m. 13 69 791
8-10 a.m. 82 156 1,973
10-12 a.m. 168 388 4,809
12-2 p.m. 149 277 3,700
2-4 p.m. 200 500 4,308
4-6 p.m. 113 302 2,447
6-8 p.m. 60 161 2,003
8-10 p.m. 37 100 1,149
10-12 p.m. 30 101 720
__________ __________ __________ _________________
Total: 870 2,094 22,589
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 215 581 796
Davis 336 4 340
Irvine 104 0 104
Los Angeles 5 100 105
Riverside 48 24 72
San Diego 12 17 29
San Francisco 31 0 31
Santa Barbara 10 50 60
Santa Cruz 42 104 146
LBL 0 23 23
LLL 0 8 8
Los Alamos n/a 0 0
Other - UC 14 63 77
Stanford 26
Other-Network UC n/a 277 277
_______ ______ _____
817 1,251 2,094
Number of FIND commands by database
MAGS database 1,925
NEWS database 129
COMP database 40
Total number of FIND commands 2,094
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,846 6,019 9,865
Davis 2,079 26 2,105
Irvine 1,319 0 1,319
Los Angeles 70 1,428 1,498
Riverside 468 166 634
San Diego 36 220 256
San Francisco 776 0 776
Santa Barbara 81 309 390
Santa Cruz 362 1,505 1,867
LBL 0 364 364
LLL 0 96 96
Los Alamos n/a 0 0
Other - UC 102 1,786 1,888
Stanford 25
Other-Network UC n/a 1,400 1,400
_______ ______ _____
9,139 13,319 22,483
Number of Records Displayed by database:
MAGS database 20,892
NEWS database 1,039
COMP database 658
Total number of Records Displayed 22,483
1.4 Relative Use of Databases
______________________________
Relative use of MAGS, NEWS, & COMP databases:
Percent of MAGS sessions 88.6%
Percent of NEWS sessions 7.9%
Percent of COMP sessions 3.4%
Percent of searches done in the MAGS database 91.9%
Percent of searches done in the NEWS database 6.2%
Percent of searches done in the COMP database 1.9%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 7.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 7.1
2.0 Magazines & Journals Database Statistics
_____________________________________________
Median session length (minutes:seconds) 4:39
Average session length (minutes:seconds) 11:42
Longest session recorded (minutes:seconds) 409:42
Average number of searches completed per session 2.5
Retrievals per search - median 6.0
Retrievals per search - average 685.1
Retrievals per search - standard deviation 5755.7
Percent of searches completed with 0 results 27.8%
Percent of searches entered that are long 0.8%
Percent of long searches completed
(includes partial results) 73.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,754 27.8%
DISPLAY (excluding automatic displays) 2,246 35.6%
HELP 180 2.9%
EXPLAIN 110 1.7%
SET/RESET 302 4.8%
SHOW 36 0.6%
ADD ON (AND, OR, AND NOT) 171 2.7%
LOGON or LOGOFF 982 15.6%
COMMENT 0 0.0%
SAVE 154 2.4%
USE 1 0.0%
OTHER 370 5.9%
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 409 22.3% 104 25.4% 9 59.1 351.9
TITLE WORD 505 27.5% 147 29.1% 12 457.8 4137.0
EXACT TITLE 38 2.1% 15 39.5% 5 9.3 13.8
JOURNAL 97 5.3% 47 48.5% 1,489 5651.9 10756.2
EXACT JOURNAL 39 2.1% 15 38.5% 2,257 11287.5 24381.5
SUBJECT 315 17.2% 121 38.4% 37 266.0 797.9
EXACT SUBJECT 30 1.6% 9 30.0% 9 46.3 150.0
KEYWORD 310 16.9% 58 18.7% 34 1085.5 4810.3
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 6 0.3% 4 66.7% 566 565.5 794.1
DATE 19 1.0% 5 26.3% 55 221.4 336.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 42 2.3% 4 9.5% 10 67.8 262.1
EXACT PE 15 0.8% 3 20.0% 5 14.3 18.8
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 10 0.5% 1 10.0% 265 718.2 1013.7
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 81 4.6% 31 38.3% 13 260.5 633.6
Single 1,670 95.4% 470 28.1% 16 874.3 5442.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 57.6%
LONG 2.3%
FIELDS 1.5%
PERIODICALS 2.6%
COMMENTS 0.0%
Other 32.8%
2.1 Computer Articles Database Statistics
__________________________________________
Median session length (minutes:seconds) 2:52
Average session length (minutes:seconds) 7:04
Longest session recorded (minutes:seconds) 23:31
Average number of searches completed per session 1.3
Retrievals per search - median 20.0
Retrievals per search - average 1929.9
Retrievals per search - standard deviation 6295.1
Percent of searches completed with 0 results 30.0%
Percent of searches entered that are long 0.0%
Percent of long searches completed
(includes partial results) 0.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 38 18.7%
DISPLAY (excluding automatic displays) 79 38.9%
HELP 11 5.4%
EXPLAIN 8 3.9%
SET/RESET 16 7.9%
SHOW 1 0.5%
ADD ON (AND, OR, AND NOT) 2 1.0%
LOGON or LOGOFF 32 15.8%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 16 7.9%
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 16.3% 6 85.7% 1 1.0 0.0
TITLE WORD 12 27.9% 4 33.3% 464 2191.5 4467.3
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
JOURNAL 1 2.3% 0 0.0% 686 686.0 0.0
EXACT JOURNAL 2 4.7% 0 0.0% 20,621 20620.5 23526.1
SUBJECT 8 18.6% 2 25.0% 1,770 1232.7 947.6
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 11 25.6% 3 27.3% 36 1279.1 3484.2
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 1 2.3% 1 100% 0 0.0 0.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1 2.3% 0 0.0% 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 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 5 13.2% 4 80.0% 1,628 1628.0 0.0
Single 33 86.8% 8 24.2% 181 2953.4 7828.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.4%
SHORT 67.3%
LONG 0.9%
FIELDS 0.0%
PERIODICALS 0.9%
COMMENTS 0.0%
Other 24.5%
2.1.1 Article Text
___________________
DISPLAY TEXT commands 509
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 20
displays or when any of these paging options is set.
TEXT included with MAIL commands 109
SET DISPLAY TEXT commands 0
2.2 Newspaper Articles Database Statistics
___________________________________________
Median session length (minutes:seconds) 4:46
Average session length (minutes:seconds) 12:17
Longest session recorded (minutes:seconds) 132:01
Average number of searches completed per session 1.9
Retrievals per search - median 3.0
Retrievals per search - average 172.8
Retrievals per search - standard deviation 611.2
Percent of searches completed with 0 results 37.2%
Percent of searches entered that are long 0.8%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 112 30.4%
DISPLAY (excluding automatic displays) 101 27.4%
HELP 4 1.1%
EXPLAIN 4 1.1%
SET/RESET 32 8.7%
SHOW 4 1.1%
ADD ON (AND, OR, AND NOT) 17 4.6%
LOGON or LOGOFF 80 21.7%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 15 4.1%
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 19 16.4% 6 31.6% 25 112.8 190.6
TITLE WORD 36 31.0% 15 41.7% 13 237.7 465.3
EXACT TITLE 7 6.0% 4 57.1% 1 9.7 15.0
JOURNAL 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 16 13.8% 9 56.3% 46 216.1 371.7
EXACT SUBJECT 3 2.6% 0 0.0% 94 75.3 35.9
KEYWORD 34 29.3% 11 32.4% 17 473.1 1258.8
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1 0.9% 0 0.0% 7 7.0 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 3.6% 1 25.0% 1 32.0 53.7
Single 108 96.4% 43 39.8% 18 291.1 807.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 50.0%
LONG 4.8%
FIELDS 4.3%
PERIODICALS 1.1%
COMMENTS 0.0%
Other 38.2%
2.3 Error, EXPLAIN and HELP statistics (MAGS, COMP, & NEWS)
_______________________________________ ____________________
Percent of commands that contained errors 11.7%
Ten most frequent errors:
1. First word of command is invalid 32.6%
2. NS command - no next screen 26.4%
3. FIND command with invalid index name 15.5%
4. DISPLAY command contains invalid word 3.2%
5. Valid command at an inappropriate time 2.6%
6. PS command - no previous screen 2.2%
7. Search term missing from search command 2.2%
8. DISPLAY command - no FIND results 1.2%
9. 1282 1.2%
10. SHOW command contains invalid word 0.9%
11. All others 12.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.1%
2. FIND 13.1%
3. LOCATE (ARTICLE DBS) 13.1%
4. COMMANDS 9.0%
5. INDEXES 8.2%
6. MAGS DATABASE 6.6%
7. MAIL 4.1%
8. DATABASES 2.5%
9. ADDON SEARCH 2.5%
10. A028 1.6%
11. All others 17.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.2%
2. First word of command is invalid 20.5%
3. FIND command with invalid index name 13.6%
4. FIND command with zero results 6.6%
5. DISPLAY command-first of >1 screen 5.0%
6. NS command - no next screen 4.4%
7. DISPLAY command - middle of >1 screen 3.8%
8. DISPLAY command - last of >1 screen 3.2%
9. 3 HELP commands issued from same code 2.5%
10. DISPLAY command-complete in one screen 2.5%
11. All others 12.6%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. IAC NEWS 20.0%
3. SETTINGS (IAC DBS) 7.5%
4. GLOSSARY 5.0%
5. SYSTEM NEWS 5.0%
6. 0420 2.5%
7. MAIL SETTINGS 2.5%
8. 2292 2.5%
9. DLA BULLETIN 2.5%
10. SEARCH 2.5%
11. All others 0.0%
IACmm/dd iac MELVYL IAC DATABASES TELNET STATISTICS (weekly)