MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 06/30/01 through 07/06/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 46 474 520
Davis 248 24 272
Irvine 202 0 202
Los Angeles 4 206 210
Riverside 28 56 84
San Diego 47 158 205
San Francisco 138 0 138
Santa Barbara 6 92 98
Santa Cruz 13 54 67
LBL 0 98 98
LLL 0 45 45
Los Alamos n/a 0 0
Other - UC 0 29 29
U.S. Forestry 0
Other-Network UC n/a 479 479
_______ ______ _____
732 1,715 2,447
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 49 202 1,524
2-4 a.m. 34 164 1,143
4-6 a.m. 35 109 1,236
6-8 a.m. 107 634 6,530
8-10 a.m. 260 992 8,799
10-12 a.m. 472 1,395 12,121
12-2 p.m. 423 1,403 11,729
2-4 p.m. 466 1,304 11,900
4-6 p.m. 298 961 7,580
6-8 p.m. 126 401 2,670
8-10 p.m. 90 321 3,077
10-12 p.m. 87 431 2,412
__________ __________ __________ _________________
Total: 2,447 8,317 70,721
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 125 1,340 1,465
Davis 905 44 949
Irvine 833 0 833
Los Angeles 6 495 501
Riverside 66 165 231
San Diego 176 429 605
San Francisco 405 0 405
Santa Barbara 13 311 324
Santa Cruz 22 176 198
LBL 0 325 325
LLL 0 707 707
Los Alamos n/a 0 0
Other - UC 0 78 78
U.S. Forestry 0
Other-Network UC n/a 1,696 1,696
_______ ______ _____
2,551 5,766 8,317
Number of FIND commands by database
CC database 8,144
CCT database 173
Total number of FIND commands 8,317
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 874 14,022 14,896
Davis 7,850 301 8,151
Irvine 5,674 0 5,674
Los Angeles 95 4,698 4,793
Riverside 631 1,693 2,324
San Diego 840 2,904 3,744
San Francisco 3,140 0 3,140
Santa Barbara 45 2,501 2,546
Santa Cruz 455 2,014 2,469
LBL 0 2,961 2,961
LLL 0 8,151 8,151
Los Alamos n/a 0 0
Other - UC 0 976 976
U.S. Forestry 0
Other-Network UC n/a 10,896 10,896
_______ ______ _____
19,604 51,117 70,721
Number of Records Displayed by database:
CC database 63,522
CCT database 7,199
Total number of Records Displayed 70,721
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 97.0%
Percent of CCT sessions 3.0%
Percent of searches done in the CC database 97.9%
Percent of searches done in the CCT database 2.1%
1.5 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 4.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 4.8
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) 630:25
Average number of searches completed per session 3.4
Retrievals per search - median 8.0
Retrievals per search - average 525.9
Retrievals per search - standard deviation 5002.5
Percent of searches completed with 0 results 25.0%
Percent of searches entered that are long 0.4%
Percent of long searches completed
(includes partial results) 83.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 7,247 37.8%
DISPLAY (excluding automatic displays) 5,733 29.9%
HELP 94 0.5%
EXPLAIN 125 0.7%
SET/RESET 1,030 5.4%
SHOW 7 0.0%
ADD ON (AND, OR, AND NOT) 897 4.7%
LOGON or LOGOFF 2,927 15.3%
COMMENT 0 0.0%
SAVE 302 1.6%
USE 7 0.0%
OTHER 794 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 3,572 42.1% 545 15.3% 30 206.5 886.0
TITLE WORD 2,259 26.6% 699 30.9% 14 1684.0 10507.3
EXACT TITLE 82 1.0% 40 48.8% 3 189.6 776.2
JOURNAL 340 4.0% 138 40.6% 275 2635.8 9747.6
EXACT JOURNAL 482 5.7% 275 57.1% 46 1224.2 3561.1
SUBJECT CAT 55 0.6% 8 14.5% 9 21.0 43.2
SUBFILE 19 0.2% 0 0.0% 20 2415.7 9035.2
PUBLICATION TYPE 59 0.7% 9 15.3% 13 258.4 555.4
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 139 1.6% 13 9.4% 7 61.4 120.9
ADDED 633 7.5% 389 61.5% 21 42.0 92.2
PERIODICAL 450 5.3% 78 17.3% 5 88.8 936.9
EXACT PE 68 0.8% 6 8.8% 4 11.8 21.7
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 321 3.8% 92 28.7% 20 737.0 3440.2
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 1,219 16.9% 541 44.4% 9 165.1 1774.6
Single 6,014 83.1% 1,205 20.0% 30 853.0 6440.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.7%
SHORT 76.2%
LONG 5.8%
FIELDS 2.0%
PERIODICALS 10.3%
COMMENTS 0.0%
Other 1.1%
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) 60:44
Average number of searches completed per session 2.4
Retrievals per search - median 75.0
Retrievals per search - average 284.9
Retrievals per search - standard deviation 709.7
Percent of searches completed with 0 results 20.2%
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 173 26.1%
DISPLAY (excluding automatic displays) 340 51.3%
HELP 18 2.7%
EXPLAIN 7 1.1%
SET/RESET 49 7.4%
SHOW 5 0.8%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 60 9.0%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 11 1.7%
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 104 60.1% 24 23.1% 93 322.6 947.8
EXACT JOURNAL 65 37.6% 11 16.9% 267 434.1 459.7
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 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 4 2.3% 0 0.0% 7 7.3 7.2
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 173 100% 35 20.2% 133 357.1 778.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 16.0%
ISSUES 32.6%
SHORT 30.3%
LONG 17.7%
PERIODICALS 3.4%
COMMENTS 0.0%
Other 0.0%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
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Percent of commands that contained errors 6.5%
Ten most frequent errors:
1. NS command - no next screen 30.2%
2. First word of command is invalid 30.0%
3. FIND command with invalid index name 8.9%
4. Index invalid in current database 3.1%
5. Max. # of ports to a Z39 db are in use 2.8%
6. DISPLAY command contains invalid word 2.7%
7. DISPLAY command - no FIND results 2.7%
8. Search term missing from search command 2.7%
9. PS command - no previous screen 2.2%
10. Valid command at an inappropriate time 1.7%
11. All others 13.0%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 16.7%
2. FIND (CC DB) 15.2%
3. COMMANDS 12.1%
4. CC INDEXES 9.8%
5. DATABASES 5.3%
6. LOCATE (ARTICLE DBS) 4.5%
7. CC DATABASE 3.8%
8. MAIL 3.0%
9. 1752 3.0%
10. CURRENT DATES 3.0%
11. All others 23.5%
Ten most frequent HELP situations:
1. Help requested from START CC command 17.6%
2. First word of command is invalid 13.5%
3. DISPLAY command - middle of >1 screen 8.6%
4. F/BR with index invalid in current DB 6.6%
5. FIND command with invalid index name 6.1%
6. Help requested from SET DB command 6.1%
7. Help requested from FIND PA command 6.1%
8. 464 4.9%
9. DISPLAY command-first of >1 screen 4.1%
10. FIND command with zero results 3.3%
11. All others 23.0%
Ten most frequent SHOW requests:
1. HISTORY 33.3%
2. CC NEWS 16.7%
3. SYSTEM NEWS 8.3%
4. CCT SETTINGS 8.3%
5. 2931 8.3%
6. CC GLOSSARY 8.3%
7. SC LIST (CC DBS) 8.3%
8. SEARCH 8.3%
11. All others 0.0%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)