MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 03/03/01 through 03/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 91 892 983
Davis 387 42 429
Irvine 307 0 307
Los Angeles 63 318 381
Riverside 60 56 116
San Diego 55 272 327
San Francisco 211 0 211
Santa Barbara 47 171 218
Santa Cruz 40 120 160
LBL 0 140 140
LLL 0 66 66
Los Alamos n/a 0 0
Other - UC 9 37 46
U.S. Forestry 0
Other-Network UC n/a 483 483
_______ ______ _____
1,270 2,597 3,867
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 64 186 1,625
2-4 a.m. 43 176 1,534
4-6 a.m. 45 149 1,050
6-8 a.m. 78 491 4,694
8-10 a.m. 398 1,427 11,975
10-12 a.m. 683 2,009 18,746
12-2 p.m. 657 1,932 16,518
2-4 p.m. 769 2,005 20,551
4-6 p.m. 586 1,671 15,321
6-8 p.m. 276 910 7,840
8-10 p.m. 168 516 6,000
10-12 p.m. 100 329 3,463
__________ __________ __________ _________________
Total: 3,867 11,801 109,317
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 182 2,521 2,703
Davis 1,161 108 1,269
Irvine 791 0 791
Los Angeles 187 903 1,090
Riverside 219 172 391
San Diego 130 1,001 1,131
San Francisco 590 0 590
Santa Barbara 122 628 750
Santa Cruz 74 526 600
LBL 0 411 411
LLL 0 748 748
Los Alamos n/a 0 0
Other - UC 9 110 119
U.S. Forestry 0
Other-Network UC n/a 1,208 1,208
_______ ______ _____
3,465 8,336 11,801
Number of FIND commands by database
CC database 11,577
CCT database 224
Total number of FIND commands 11,801
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,588 25,315 26,903
Davis 7,653 740 8,393
Irvine 5,510 0 5,510
Los Angeles 1,213 10,845 12,058
Riverside 2,157 2,566 4,723
San Diego 810 7,537 8,347
San Francisco 4,936 0 4,936
Santa Barbara 838 6,072 6,910
Santa Cruz 681 5,981 6,662
LBL 0 5,884 5,884
LLL 0 7,079 7,079
Los Alamos n/a 0 0
Other - UC 80 1,229 1,309
U.S. Forestry 0
Other-Network UC n/a 10,603 10,603
_______ ______ _____
25,466 83,851 109,317
Number of Records Displayed by database:
CC database 100,512
CCT database 8,805
Total number of Records Displayed 109,317
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 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 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
___________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 580:55
Average number of searches completed per session 3.1
Retrievals per search - median 9.0
Retrievals per search - average 456.0
Retrievals per search - standard deviation 3612.4
Percent of searches completed with 0 results 24.1%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 62.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 10,705 38.5%
DISPLAY (excluding automatic displays) 7,881 28.3%
HELP 235 0.8%
EXPLAIN 236 0.8%
SET/RESET 1,405 5.1%
SHOW 45 0.2%
ADD ON (AND, OR, AND NOT) 872 3.1%
LOGON or LOGOFF 4,806 17.3%
COMMENT 0 0.0%
SAVE 433 1.6%
USE 8 0.0%
OTHER 1,187 4.3%
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 5,013 41.1% 711 14.2% 31 279.4 2329.5
TITLE WORD 3,849 31.5% 1,104 28.7% 14 749.3 5175.7
EXACT TITLE 130 1.1% 61 46.9% 2 54.0 215.1
JOURNAL 523 4.3% 228 43.6% 325 3703.1 9615.4
EXACT JOURNAL 624 5.1% 349 55.9% 43 1824.7 6751.4
SUBJECT CAT 41 0.3% 0 0.0% 8 17.7 21.3
SUBFILE 19 0.2% 0 0.0% 38 566.7 1472.6
PUBLICATION TYPE 55 0.5% 11 20.0% 9 1289.2 8053.4
LANGUAGE 4 0.0% 1 25.0% 4 142.7 240.2
DATE 175 1.4% 21 12.0% 9 101.8 528.1
ADDED 604 5.0% 422 69.9% 19 32.3 36.5
PERIODICAL 390 3.2% 62 15.9% 5 37.4 140.3
EXACT PE 123 1.0% 14 11.4% 3 22.0 118.4
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 651 5.3% 197 30.3% 16 465.7 2484.1
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 1,498 14.0% 670 44.7% 7 49.9 329.5
Single 9,174 86.0% 1,833 20.0% 31 693.4 4452.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.4%
SHORT 80.7%
LONG 4.1%
FIELDS 2.1%
PERIODICALS 8.4%
COMMENTS 0.0%
Other 1.3%
2.1 CCT Database Statistics
____________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 53:56
Average number of searches completed per session 1.4
Retrievals per search - median 48.0
Retrievals per search - average 713.9
Retrievals per search - standard deviation 3483.8
Percent of searches completed with 0 results 27.2%
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 221 21.7%
DISPLAY (excluding automatic displays) 341 33.5%
HELP 94 9.2%
EXPLAIN 44 4.3%
SET/RESET 104 10.2%
SHOW 13 1.3%
ADD ON (AND, OR, AND NOT) 3 0.3%
LOGON or LOGOFF 158 15.5%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 41 4.0%
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 144 64.9% 42 29.2% 138 1223.0 4985.3
EXACT JOURNAL 38 17.1% 15 39.5% 143 308.7 380.6
SUBJECT CAT 5 2.3% 0 0.0% 5,038 5456.8 936.5
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 1 0.5% 1 100% 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 34 15.3% 2 5.9% 5 19.5 60.7
By number of indexes:
Multiple 1 0.5% 1 100% 0 0.0 0.0
Single 220 99.5% 58 26.4% 121 986.2 4067.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.4%
ISSUES 48.8%
SHORT 9.5%
LONG 23.1%
PERIODICALS 11.9%
COMMENTS 0.0%
Other 0.3%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 33.3%
2. First word of command is invalid 29.1%
3. FIND command with invalid index name 9.3%
4. Index invalid in current database 4.0%
5. PS command - no previous screen 2.5%
6. DISPLAY command - no FIND results 2.1%
7. Search term missing from search command 1.8%
8. D ABS command in database w/o abstracts 1.7%
9. Valid command at an inappropriate time 1.4%
10. DISPLAY command contains invalid word 1.4%
11. All others 13.5%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 17.5%
2. FIND (CC DB) 11.4%
3. CC INDEXES 9.6%
4. COMMANDS 7.9%
5. LOCATE (ARTICLE DBS) 5.4%
6. CC DATABASE 4.6%
7. Unrecognized term 3.9%
8. ADD-ON SEARCH 3.6%
9. CCT DATABASE 3.2%
10. CCT INDEXES 2.9%
11. All others 30.0%
Ten most frequent HELP situations:
1. Help requested from START CC command 15.3%
2. First word of command is invalid 13.5%
3. FIND command with invalid index name 8.4%
4. F/BR with index invalid in current DB 8.2%
5. Help requested from SET DB command 7.6%
6. FIND command retrieves >1 book 6.1%
7. DISPLAY command-first of >1 screen 5.4%
8. FIND command with zero results 4.1%
9. DISPLAY command - last of >1 screen 3.1%
10. Help requested from START CCT command 3.0%
11. All others 25.5%
Ten most frequent SHOW requests:
1. HISTORY 44.4%
2. CC NEWS 9.3%
3. UPDATE 9.3%
4. SYSTEM NEWS 7.4%
5. SC LIST (CC DBS) 5.6%
6. MAIL SETTINGS 3.7%
7. CC GLOSSARY 3.7%
8. SEARCH 3.7%
9. GLOSSARY 1.9%
10. SYSTEM1 NEWS 1.9%
11. All others 9.3%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)