MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 12/23/00 through 12/29/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 247 247
Davis 129 3 132
Irvine 107 0 107
Los Angeles 10 97 107
Riverside 7 19 26
San Diego 20 122 142
San Francisco 71 0 71
Santa Barbara 3 44 47
Santa Cruz 4 28 32
LBL 0 29 29
LLL 0 34 34
Los Alamos n/a 0 0
Other - UC 0 12 12
U.S. Forestry 0
Other-Network UC n/a 172 172
_______ ______ _____
351 807 1,158
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 19 48 3,416
2-4 a.m. 22 65 464
4-6 a.m. 12 42 842
6-8 a.m. 48 368 6,004
8-10 a.m. 141 546 4,649
10-12 a.m. 267 720 6,652
12-2 p.m. 179 626 5,853
2-4 p.m. 184 718 6,389
4-6 p.m. 134 413 6,401
6-8 p.m. 68 183 1,858
8-10 p.m. 50 165 1,767
10-12 p.m. 34 117 783
__________ __________ __________ _________________
Total: 1,158 4,011 45,078
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 722 722
Davis 454 15 469
Irvine 430 0 430
Los Angeles 12 264 276
Riverside 5 66 71
San Diego 58 270 328
San Francisco 203 0 203
Santa Barbara 13 219 232
Santa Cruz 9 137 146
LBL 0 72 72
LLL 0 573 573
Los Alamos n/a 0 0
Other - UC 0 60 60
U.S. Forestry 0
Other-Network UC n/a 429 429
_______ ______ _____
1,184 2,827 4,011
Number of FIND commands by database
CC database 3,948
CCT database 63
Total number of FIND commands 4,011
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 10,844 10,844
Davis 5,045 132 5,177
Irvine 2,638 0 2,638
Los Angeles 70 2,147 2,217
Riverside 25 754 779
San Diego 885 2,424 3,309
San Francisco 1,509 0 1,509
Santa Barbara 123 5,177 5,300
Santa Cruz 102 1,167 1,269
LBL 0 637 637
LLL 0 6,803 6,803
Los Alamos n/a 0 0
Other - UC 0 1,531 1,531
U.S. Forestry 0
Other-Network UC n/a 3,065 3,065
_______ ______ _____
10,397 34,681 45,078
Number of Records Displayed by database:
CC database 42,572
CCT database 2,506
Total number of Records Displayed 45,078
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 95.2%
Percent of CCT sessions 4.8%
Percent of searches done in the CC database 98.4%
Percent of searches done in the CCT database 1.6%
1.5 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 3.7
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) 643:54
Average number of searches completed per session 3.6
Retrievals per search - median 10.0
Retrievals per search - average 272.5
Retrievals per search - standard deviation 1870.7
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 61.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,711 39.9%
DISPLAY (excluding automatic displays) 2,706 29.1%
HELP 39 0.4%
EXPLAIN 63 0.7%
SET/RESET 429 4.6%
SHOW 11 0.1%
ADD ON (AND, OR, AND NOT) 237 2.6%
LOGON or LOGOFF 1,429 15.4%
COMMENT 0 0.0%
SAVE 302 3.3%
USE 0 0.0%
OTHER 364 3.9%
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 1,793 41.2% 220 12.3% 29 214.8 1241.8
TITLE WORD 1,134 26.0% 327 28.8% 12 372.2 1708.8
EXACT TITLE 50 1.1% 29 58.0% 2 3.5 3.9
JOURNAL 160 3.7% 93 58.1% 374 3277.3 8869.7
EXACT JOURNAL 415 9.5% 284 68.4% 42 593.3 2680.8
SUBJECT CAT 5 0.1% 0 0.0% 21 35.0 36.0
SUBFILE 3 0.1% 0 0.0% 174 1968.0 3237.2
PUBLICATION TYPE 2 0.0% 0 0.0% 2 1.5 0.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 47 1.1% 4 8.5% 39 1165.7 2365.0
ADDED 499 11.5% 361 72.3% 25 42.2 38.7
PERIODICAL 70 1.6% 15 21.4% 9 445.7 2810.2
EXACT PE 22 0.5% 2 9.1% 5 8.9 13.3
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 156 3.6% 45 28.8% 25 914.3 3876.8
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 654 17.7% 404 61.8% 19 250.2 1117.2
Single 3,045 82.3% 570 18.7% 26 403.4 2319.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 81.7%
LONG 6.2%
FIELDS 2.4%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 1.9%
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) 171:30
Average number of searches completed per session 1.1
Retrievals per search - median 54.0
Retrievals per search - average 343.6
Retrievals per search - standard deviation 953.0
Percent of searches completed with 0 results 20.6%
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 63 18.3%
DISPLAY (excluding automatic displays) 130 37.7%
HELP 23 6.7%
EXPLAIN 21 6.1%
SET/RESET 28 8.1%
SHOW 1 0.3%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 63 18.3%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 16 4.6%
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 34 49.3% 8 23.5% 140 284.1 351.9
EXACT JOURNAL 15 21.7% 1 6.7% 445 484.3 385.3
SUBJECT CAT 1 1.4% 0 0.0% 7,303 7303.0 0.0
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 6 8.7% 2 33.3% 25 35.3 21.9
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 13 18.8% 4 30.8% 12 19.4 22.1
By number of indexes:
Multiple 6 9.5% 2 33.3% 25 35.3 21.9
Single 57 90.5% 11 19.3% 144 467.5 1092.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
ISSUES 45.3%
SHORT 14.6%
LONG 22.6%
PERIODICALS 12.4%
COMMENTS 0.0%
Other 3.6%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
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Percent of commands that contained errors 7.5%
Ten most frequent errors:
1. NS command - no next screen 37.3%
2. First word of command is invalid 28.0%
3. FIND command with invalid index name 9.8%
4. Index invalid in current database 4.5%
5. D ABS command in database w/o abstracts 2.6%
6. PS command - no previous screen 2.2%
7. DISPLAY command contains invalid word 1.4%
8. DISPLAY command - no FIND results 0.9%
9. Search term missing from search command 0.9%
10. NS of SHOW/EXP command-no next screen 0.9%
11. All others 11.6%
Ten most frequent EXPLAIN requests:
1. FIND (CC DB) 14.3%
2. CC GUIDE 9.5%
3. CCT DATABASE 8.3%
4. LOCATE (ARTICLE DBS) 7.1%
5. CURRENT DATES 7.1%
6. CC INDEXES 7.1%
7. CCT INDEXES 7.1%
8. COMMANDS 4.8%
9. 5331 3.6%
10. MAIL 2.4%
11. All others 28.6%
Ten most frequent HELP situations:
1. Help requested from START CC command 15.1%
2. FIND command with invalid index name 11.6%
3. F/BR with index invalid in current DB 9.6%
4. First word of command is invalid 8.9%
5. Help requested from SET DB command 8.2%
6. Help requested from START CCT command 7.5%
7. NS command - no next screen 6.2%
8. DISPLAY command - middle of >1 screen 6.2%
9. FIND command with zero results 5.5%
10. DISPLAY command-complete in one screen 3.4%
11. All others 17.8%
Ten most frequent SHOW requests:
1. HISTORY 41.7%
2. SEARCH 16.7%
3. TIME 8.3%
4. CC SETTINGS 8.3%
5. CC GLOSSARY 8.3%
6. SC LIST (CC DBS) 8.3%
7. DATABASES 8.3%
11. All others 0.0%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)