MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 03/02/02 through 03/08/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 57 539 596
Davis 254 11 265
Irvine 128 0 128
Los Angeles 2 198 200
Riverside 9 35 44
San Diego 56 129 185
San Francisco 128 0 128
Santa Barbara 6 86 92
Santa Cruz 4 36 40
LBL 0 103 103
LLL 0 47 47
Los Alamos n/a 0 0
Other - UC 0 38 38
U.S. Forestry 0
Other-Network UC n/a 362 362
_______ ______ _____
644 1,584 2,228
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 19 49 161
2-4 a.m. 23 57 7,737
4-6 a.m. 25 69 473
6-8 a.m. 52 110 628
8-10 a.m. 251 624 7,277
10-12 a.m. 438 1,274 10,134
12-2 p.m. 374 1,021 13,189
2-4 p.m. 435 1,246 15,233
4-6 p.m. 304 934 14,299
6-8 p.m. 150 554 8,001
8-10 p.m. 92 314 3,125
10-12 p.m. 65 201 2,107
__________ __________ __________ _________________
Total: 2,228 6,453 82,364
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 138 1,576 1,714
Davis 685 28 713
Irvine 362 0 362
Los Angeles 5 526 531
Riverside 18 155 173
San Diego 138 513 651
San Francisco 526 0 526
Santa Barbara 5 295 300
Santa Cruz 2 65 67
LBL 0 312 312
LLL 0 139 139
Los Alamos n/a 0 0
Other - UC 0 96 96
U.S. Forestry 0
Other-Network UC n/a 869 869
_______ ______ _____
1,879 4,574 6,453
Number of FIND commands by database
CC database 6,253
CCT database 200
Total number of FIND commands 6,453
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,116 16,034 17,150
Davis 5,978 117 6,095
Irvine 10,288 0 10,288
Los Angeles 8 4,319 4,327
Riverside 225 1,580 1,805
San Diego 2,278 4,911 7,189
San Francisco 20,039 0 20,039
Santa Barbara 32 4,220 4,252
Santa Cruz 95 529 624
LBL 0 3,052 3,052
LLL 0 1,086 1,086
Los Alamos n/a 0 0
Other - UC 0 1,109 1,109
U.S. Forestry 0
Other-Network UC n/a 5,348 5,348
_______ ______ _____
40,059 42,305 82,364
Number of Records Displayed by database:
CC database 58,194
CCT database 24,170
Total number of Records Displayed 82,364
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 96.9%
Percent of searches done in the CCT database 3.1%
1.5 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 2.5
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) 258:42
Average number of searches completed per session 2.9
Retrievals per search - median 10.0
Retrievals per search - average 667.5
Retrievals per search - standard deviation 4536.8
Percent of searches completed with 0 results 22.1%
Percent of searches entered that are long 0.5%
Percent of long searches completed
(includes partial results) 80.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,644 35.7%
DISPLAY (excluding automatic displays) 4,882 30.8%
HELP 134 0.8%
EXPLAIN 130 0.8%
SET/RESET 815 5.1%
SHOW 25 0.2%
ADD ON (AND, OR, AND NOT) 609 3.8%
LOGON or LOGOFF 2,687 17.0%
COMMENT 0 0.0%
SAVE 206 1.3%
USE 1 0.0%
OTHER 694 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 2,527 40.7% 383 15.2% 31 233.5 1791.1
TITLE WORD 2,078 33.5% 646 31.1% 13 1019.7 6812.7
EXACT TITLE 88 1.4% 47 53.4% 2 13.2 25.4
JOURNAL 368 5.9% 126 34.2% 2,021 5770.0 10499.8
EXACT JOURNAL 109 1.8% 26 23.9% 1,124 4915.9 9801.7
SUBJECT CAT 23 0.4% 2 8.7% 18 60.9 81.6
SUBFILE 37 0.6% 11 29.7% 13 90.7 161.8
PUBLICATION TYPE 10 0.2% 1 10.0% 4 13397.8 26578.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 112 1.8% 28 25.0% 10 49.8 129.3
ADDED 23 0.4% 2 8.7% 7 8.9 8.0
PERIODICAL 400 6.4% 45 11.2% 4 24.6 115.6
EXACT PE 82 1.3% 4 4.9% 5 10.3 19.1
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 354 5.7% 93 26.3% 29 821.5 3850.0
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 557 9.9% 180 32.3% 6 35.5 119.6
Single 5,077 90.1% 1,043 20.5% 29 1014.2 5601.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.9%
SHORT 73.3%
LONG 7.4%
FIELDS 1.1%
PERIODICALS 12.4%
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) 117:41
Average number of searches completed per session 1.9
Retrievals per search - median 51.5
Retrievals per search - average 488.8
Retrievals per search - standard deviation 1862.8
Percent of searches completed with 0 results 25.5%
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 195 17.8%
DISPLAY (excluding automatic displays) 329 30.0%
HELP 47 4.3%
EXPLAIN 34 3.1%
SET/RESET 70 6.4%
SHOW 13 1.2%
ADD ON (AND, OR, AND NOT) 5 0.5%
LOGON or LOGOFF 110 10.0%
COMMENT 0 0.0%
SAVE 265 24.2%
USE 0 0.0%
OTHER 27 2.5%
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 138 70.8% 42 30.4% 86 457.5 2071.4
EXACT JOURNAL 38 19.5% 9 23.7% 70 184.1 417.9
SUBJECT CAT 7 3.6% 0 0.0% 4,517 5992.3 2706.3
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 12 6.2% 0 0.0% 8 11.4 17.3
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 195 100% 51 26.2% 78 634.3 2166.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.9%
ISSUES 65.6%
SHORT 17.1%
LONG 2.8%
PERIODICALS 4.0%
COMMENTS 0.0%
Other 1.7%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
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Percent of commands that contained errors 7.6%
Ten most frequent errors:
1. NS command - no next screen 29.9%
2. First word of command is invalid 29.9%
3. FIND command with invalid index name 10.8%
4. Index invalid in current database 4.9%
5. DISPLAY command contains invalid word 3.1%
6. PS command - no previous screen 2.4%
7. Search term missing from search command 2.3%
8. Valid command at an inappropriate time 2.0%
9. Add-on search, no index name after verb 1.3%
10. DISPLAY command - no FIND results 1.2%
11. All others 12.2%
Ten most frequent EXPLAIN requests:
1. FIND (CC DB) 14.0%
2. CC GUIDE 13.4%
3. COMMANDS 7.9%
4. CC INDEXES 7.3%
5. CCT DATABASE 6.7%
6. CCT INDEXES 5.5%
7. LOCATE (ARTICLE DBS) 4.9%
8. CC DATABASE 4.3%
9. ADD-ON SEARCH 3.7%
10. Unrecognized term-reminders off 3.0%
11. All others 29.3%
Ten most frequent HELP situations:
1. First word of command is invalid 13.9%
2. Help requested from START CC command 12.2%
3. FIND command with invalid index name 11.0%
4. F/BR with index invalid in current DB 9.0%
5. Help requested from SET DB command 6.7%
6. DISPLAY command - middle of >1 screen 6.4%
7. FIND command with zero results 5.5%
8. DISPLAY command-first of >1 screen 4.1%
9. Help requested from START CCT command 3.5%
10. Add-on without index name after verb 2.3%
11. All others 25.5%
Ten most frequent SHOW requests:
1. HISTORY 57.6%
2. SYSTEM NEWS 12.1%
3. CC NEWS 9.1%
4. SC LIST (CC DBS) 6.1%
5. Invalid term 3.0%
6. CCT SETTINGS 3.0%
7. SC 3.0%
8. CC STATISTICS 3.0%
9. SEARCH 3.0%
11. All others 0.0%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)