MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 01/20/01 through 01/26/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 75 764 839
Davis 383 25 408
Irvine 261 0 261
Los Angeles 33 281 314
Riverside 59 73 132
San Diego 78 299 377
San Francisco 211 0 211
Santa Barbara 45 203 248
Santa Cruz 33 82 115
LBL 0 140 140
LLL 0 60 60
Los Alamos n/a 0 0
Other - UC 1 62 63
U.S. Forestry 0
Other-Network UC n/a 531 531
_______ ______ _____
1,179 2,520 3,699
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 73 220 1,121
2-4 a.m. 39 133 1,057
4-6 a.m. 51 243 3,037
6-8 a.m. 97 515 5,827
8-10 a.m. 387 1,180 10,205
10-12 a.m. 687 1,869 19,832
12-2 p.m. 715 2,057 17,832
2-4 p.m. 700 1,970 18,551
4-6 p.m. 508 1,360 12,648
6-8 p.m. 209 623 5,583
8-10 p.m. 150 557 4,552
10-12 p.m. 83 318 4,713
__________ __________ __________ _________________
Total: 3,699 11,045 104,958
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 183 1,971 2,154
Davis 1,080 69 1,149
Irvine 809 0 809
Los Angeles 80 855 935
Riverside 115 274 389
San Diego 223 896 1,119
San Francisco 567 0 567
Santa Barbara 139 709 848
Santa Cruz 43 353 396
LBL 0 372 372
LLL 0 638 638
Los Alamos n/a 0 0
Other - UC 2 251 253
U.S. Forestry 0
Other-Network UC n/a 1,416 1,416
_______ ______ _____
3,241 7,804 11,045
Number of FIND commands by database
CC database 10,830
CCT database 215
Total number of FIND commands 11,045
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,385 19,161 20,546
Davis 7,768 656 8,424
Irvine 5,215 0 5,215
Los Angeles 355 10,403 10,758
Riverside 1,452 2,669 4,121
San Diego 2,710 8,532 11,242
San Francisco 4,976 0 4,976
Santa Barbara 1,024 8,428 9,452
Santa Cruz 356 3,794 4,150
LBL 0 4,270 4,270
LLL 0 7,948 7,948
Los Alamos n/a 0 0
Other - UC 6 2,949 2,955
U.S. Forestry 0
Other-Network UC n/a 10,901 10,901
_______ ______ _____
25,247 79,711 104,958
Number of Records Displayed by database:
CC database 94,434
CCT database 10,524
Total number of Records Displayed 104,958
1.4 Relative Use of Databases
______________________________
Relative use of CC vs. CCT databases:
Percent of CC sessions 95.5%
Percent of CCT sessions 4.5%
Percent of searches done in the CC database 98.1%
Percent of searches done in the CCT 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 4.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 4.5
2.0 CC Database Statistics
___________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 523:23
Average number of searches completed per session 3.1
Retrievals per search - median 10.0
Retrievals per search - average 357.6
Retrievals per search - standard deviation 2902.7
Percent of searches completed with 0 results 23.4%
Percent of searches entered that are long 0.4%
Percent of long searches completed
(includes partial results) 65.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 10,131 38.4%
DISPLAY (excluding automatic displays) 7,685 29.1%
HELP 196 0.7%
EXPLAIN 165 0.6%
SET/RESET 1,401 5.3%
SHOW 52 0.2%
ADD ON (AND, OR, AND NOT) 699 2.6%
LOGON or LOGOFF 4,516 17.1%
COMMENT 0 0.0%
SAVE 336 1.3%
USE 11 0.0%
OTHER 1,210 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:
PERSONAL AUTHOR 5,067 43.7% 705 13.9% 32 225.8 1118.6
TITLE WORD 3,372 29.1% 987 29.3% 13 562.3 3267.0
EXACT TITLE 70 0.6% 26 37.1% 3 19.9 45.7
JOURNAL 399 3.4% 172 43.1% 104 2319.7 8695.5
EXACT JOURNAL 548 4.7% 345 63.0% 52 1260.2 4948.1
SUBJECT CAT 162 1.4% 18 11.1% 7 62.7 300.8
SUBFILE 4 0.0% 1 25.0% 179 1963.7 3241.2
PUBLICATION TYPE 79 0.7% 17 21.5% 10 103.3 334.3
LANGUAGE 2 0.0% 0 0.0% 896 896.0 0.0
DATE 142 1.2% 29 20.4% 15 218.1 921.2
ADDED 546 4.7% 368 67.4% 19 40.7 61.4
PERIODICAL 327 2.8% 46 14.1% 4 150.7 1225.8
EXACT PE 125 1.1% 6 4.8% 3 19.5 71.6
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 762 6.6% 210 27.6% 28 1240.4 8019.6
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 1,496 14.8% 628 42.0% 8 72.5 427.0
Single 8,594 85.2% 1,664 19.4% 31 543.5 3603.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.8%
SHORT 78.9%
LONG 5.4%
FIELDS 2.3%
PERIODICALS 7.5%
COMMENTS 0.0%
Other 1.2%
2.1 CCT Database Statistics
____________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 100:57
Average number of searches completed per session 1.3
Retrievals per search - median 50.0
Retrievals per search - average 248.3
Retrievals per search - standard deviation 1745.5
Percent of searches completed with 0 results 26.0%
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 215 20.4%
DISPLAY (excluding automatic displays) 404 38.3%
HELP 63 6.0%
EXPLAIN 28 2.7%
SET/RESET 104 9.9%
SHOW 19 1.8%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 166 15.7%
COMMENT 0 0.0%
SAVE 2 0.2%
USE 1 0.1%
OTHER 52 4.9%
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:
JOURNAL 128 59.5% 37 28.9% 74 446.8 2667.8
EXACT JOURNAL 80 37.2% 15 18.8% 118 186.0 249.1
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 0 0.0% 0 0.0% 0 0.0 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 7 3.3% 4 57.1% 50 211.0 321.3
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 215 100% 56 26.0% 77 335.7 2024.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.4%
ISSUES 44.7%
SHORT 9.4%
LONG 37.8%
PERIODICALS 1.6%
COMMENTS 0.0%
Other 1.1%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 7.9%
Ten most frequent errors:
1. NS command - no next screen 35.7%
2. First word of command is invalid 27.3%
3. FIND command with invalid index name 8.8%
4. Index invalid in current database 4.7%
5. Search term missing from search command 2.2%
6. PS command - no previous screen 2.2%
7. D ABS command in database w/o abstracts 2.0%
8. DISPLAY command - no FIND results 2.0%
9. Valid command at an inappropriate time 1.7%
10. DISPLAY command contains invalid word 1.6%
11. All others 11.8%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 15.0%
2. LOCATE (ARTICLE DBS) 14.0%
3. CC INDEXES 10.9%
4. FIND (CC DB) 10.4%
5. COMMANDS 7.3%
6. Unrecognized term 4.7%
7. CC DATABASE 4.1%
8. SUBJECT CATEGORY 3.1%
9. CCT INDEXES 3.1%
10. DATABASES 2.6%
11. All others 24.9%
Ten most frequent HELP situations:
1. Help requested from START CC command 16.2%
2. First word of command is invalid 13.5%
3. FIND command with invalid index name 7.5%
4. F/BR with index invalid in current DB 7.3%
5. Help requested from SET DB command 6.6%
6. DISPLAY command-first of >1 screen 5.5%
7. NS command - no next screen 4.6%
8. DISPLAY command - middle of >1 screen 4.6%
9. DISPLAY command-complete in one screen 3.5%
10. DISPLAY command - last of >1 screen 3.5%
11. All others 27.0%
Ten most frequent SHOW requests:
1. HISTORY 34.8%
2. SEARCH 15.2%
3. SYSTEM NEWS 10.6%
4. CC GLOSSARY 7.6%
5. SC LIST (CC DBS) 7.6%
6. LIBRARY NEWS 4.5%
7. MAIL SETTINGS 3.0%
8. MAIL STATUS 3.0%
9. UPDATE 3.0%
10. Invalid term 1.5%
11. All others 9.1%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)