MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 09/29/01 through 10/05/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 41 534 575
Davis 256 38 294
Irvine 155 0 155
Los Angeles 0 191 191
Riverside 19 58 77
San Diego 26 184 210
San Francisco 146 0 146
Santa Barbara 3 135 138
Santa Cruz 7 45 52
LBL 0 109 109
LLL 0 34 34
Los Alamos n/a 0 0
Other - UC 0 26 26
U.S. Forestry 0
Other-Network UC n/a 590 590
_______ ______ _____
653 1,944 2,597
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 51 208 2,392
2-4 a.m. 28 89 539
4-6 a.m. 19 64 1,249
6-8 a.m. 72 210 1,379
8-10 a.m. 346 859 9,158
10-12 a.m. 495 1,200 11,293
12-2 p.m. 481 1,217 9,476
2-4 p.m. 471 1,142 12,144
4-6 p.m. 314 833 10,418
6-8 p.m. 138 421 3,381
8-10 p.m. 102 324 2,269
10-12 p.m. 80 281 2,226
__________ __________ __________ _________________
Total: 2,597 6,848 65,924
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 103 1,445 1,548
Davis 781 93 874
Irvine 453 0 453
Los Angeles 0 492 492
Riverside 53 174 227
San Diego 60 489 549
San Francisco 479 0 479
Santa Barbara 2 340 342
Santa Cruz 8 145 153
LBL 0 320 320
LLL 0 71 71
Los Alamos n/a 0 0
Other - UC 0 65 65
U.S. Forestry 0
Other-Network UC n/a 1,275 1,275
_______ ______ _____
1,939 4,909 6,848
Number of FIND commands by database
CC database 6,605
CCT database 243
Total number of FIND commands 6,848
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 504 20,704 21,208
Davis 6,004 561 6,565
Irvine 4,561 0 4,561
Los Angeles 0 4,833 4,833
Riverside 192 1,574 1,766
San Diego 561 4,010 4,571
San Francisco 3,649 0 3,649
Santa Barbara 32 4,884 4,916
Santa Cruz 22 1,269 1,291
LBL 0 2,170 2,170
LLL 0 630 630
Los Alamos n/a 0 0
Other - UC 0 421 421
U.S. Forestry 0
Other-Network UC n/a 9,343 9,343
_______ ______ _____
15,525 50,399 65,924
Number of Records Displayed by database:
CC database 55,807
CCT database 10,117
Total number of Records Displayed 65,924
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 95.8%
Percent of CCT sessions 4.2%
Percent of searches done in the CC database 96.4%
Percent of searches done in the CCT database 3.5%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 4.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 4.3
2.0 CC Database Statistics
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Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 275:37
Average number of searches completed per session 2.6
Retrievals per search - median 8.0
Retrievals per search - average 353.0
Retrievals per search - standard deviation 3491.2
Percent of searches completed with 0 results 22.2%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 70.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,016 37.0%
DISPLAY (excluding automatic displays) 4,540 27.9%
HELP 123 0.8%
EXPLAIN 156 1.0%
SET/RESET 1,221 7.5%
SHOW 27 0.2%
ADD ON (AND, OR, AND NOT) 589 3.6%
LOGON or LOGOFF 2,747 16.9%
COMMENT 0 0.0%
SAVE 124 0.8%
USE 1 0.0%
OTHER 714 4.4%
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 2,924 44.3% 407 13.9% 30 225.9 1507.9
TITLE WORD 2,165 32.8% 652 30.1% 11 504.6 3117.6
EXACT TITLE 81 1.2% 43 53.1% 2 32.9 136.0
JOURNAL 254 3.9% 97 38.2% 243 3864.8 17897.7
EXACT JOURNAL 146 2.2% 37 25.3% 49 1817.3 7307.3
SUBJECT CAT 30 0.5% 3 10.0% 27 292.3 1010.3
SUBFILE 12 0.2% 2 16.7% 19 144.3 335.6
PUBLICATION TYPE 28 0.4% 5 17.9% 11 72.8 238.6
LANGUAGE 4 0.1% 0 0.0% 293 417.0 462.3
DATE 166 2.5% 30 18.1% 10 198.5 1172.3
ADDED 14 0.2% 2 14.3% 3 5.8 5.9
PERIODICAL 403 6.1% 74 18.4% 4 47.0 355.9
EXACT PE 69 1.0% 1 1.4% 3 12.9 26.6
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 297 4.5% 87 29.3% 19 668.6 2583.8
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 574 9.6% 142 24.7% 5 95.4 713.1
Single 5,418 90.4% 1,150 21.2% 26 527.3 4316.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.8%
SHORT 76.0%
LONG 4.5%
FIELDS 1.9%
PERIODICALS 10.3%
COMMENTS 0.0%
Other 1.5%
2.1 CCT Database Statistics
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Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 110:22
Average number of searches completed per session 2.2
Retrievals per search - median 59.0
Retrievals per search - average 186.5
Retrievals per search - standard deviation 352.0
Percent of searches completed with 0 results 17.3%
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 240 26.0%
DISPLAY (excluding automatic displays) 405 43.9%
HELP 38 4.1%
EXPLAIN 28 3.0%
SET/RESET 67 7.3%
SHOW 6 0.7%
ADD ON (AND, OR, AND NOT) 3 0.3%
LOGON or LOGOFF 107 11.6%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 28 3.0%
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:
JOURNAL 124 47.1% 25 20.2% 99 235.8 346.2
EXACT JOURNAL 110 41.8% 15 13.6% 75 229.9 414.7
SUBJECT CAT 0 0.0% 0 0.0% 0 0.0 0.0
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 23 8.7% 3 13.0% 1 1.0 0.0
ADDED 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 6 2.3% 1 16.7% 17 24.6 30.8
By number of indexes:
Multiple 23 9.6% 3 13.0% 1 1.0 0.0
Single 217 90.4% 38 17.5% 114 253.0 389.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 13.0%
ISSUES 33.5%
SHORT 28.1%
LONG 21.6%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 1.9%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 33.9%
2. First word of command is invalid 26.8%
3. FIND command with invalid index name 8.0%
4. Index invalid in current database 5.1%
5. DISPLAY command contains invalid word 2.6%
6. D ABS command in database w/o abstracts 2.3%
7. PS command - no previous screen 1.8%
8. Search term missing from search command 1.6%
9. DISPLAY command - no FIND results 1.5%
10. 422 1.3%
11. All others 15.1%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 17.4%
2. FIND (CC DB) 10.9%
3. CC INDEXES 9.2%
4. LOCATE (ARTICLE DBS) 7.1%
5. COMMANDS 4.9%
6. ADD-ON SEARCH 3.8%
7. SUBJECT CATEGORY 3.3%
8. CC DATABASE 3.3%
9. CCT INDEXES 3.3%
10. DATABASES 2.7%
11. All others 34.2%
Ten most frequent HELP situations:
1. Help requested from START CC command 18.3%
2. First word of command is invalid 14.5%
3. F/BR with index invalid in current DB 11.6%
4. FIND command with zero results 5.8%
5. FIND command retrieves >1 book 5.2%
6. Help requested from SET DB command 5.2%
7. FIND command with invalid index name 4.6%
8. DISPLAY command - middle of >1 screen 4.6%
9. DISPLAY command-first of >1 screen 4.1%
10. DISPLAY command-complete in one screen 2.9%
11. All others 23.2%
Ten most frequent SHOW requests:
1. HISTORY 40.6%
2. TIME 9.4%
3. CC NEWS 9.4%
4. SC LIST (CC DBS) 9.4%
5. SYSTEM NEWS 6.3%
6. CC SETTINGS 6.3%
7. SEARCH 6.3%
8. CC GLOSSARY 3.1%
9. MAIL STATUS 3.1%
10. UPDATE 3.1%
11. All others 3.1%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)