MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 06/15/02 through 06/21/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 23 341 364
Davis 179 10 189
Irvine 78 0 78
Los Angeles 0 146 146
Riverside 10 26 36
San Diego 19 162 181
San Francisco 85 0 85
Santa Barbara 4 51 55
Santa Cruz 4 43 47
LBL 0 85 85
LLL 0 26 26
Los Alamos n/a 0 0
Other - UC 0 55 55
U.S. Forestry 0
Other-Network UC n/a 199 199
_______ ______ _____
402 1,144 1,546
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 76 606
2-4 a.m. 17 103 1,165
4-6 a.m. 13 60 828
6-8 a.m. 38 107 1,151
8-10 a.m. 168 364 3,365
10-12 a.m. 311 1,193 9,019
12-2 p.m. 288 969 11,208
2-4 p.m. 290 749 6,646
4-6 p.m. 237 578 7,056
6-8 p.m. 80 231 1,736
8-10 p.m. 45 191 1,939
10-12 p.m. 34 159 892
__________ __________ __________ _________________
Total: 1,546 4,780 45,611
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 43 1,068 1,111
Davis 431 26 457
Irvine 244 0 244
Los Angeles 0 571 571
Riverside 55 102 157
San Diego 55 403 458
San Francisco 515 0 515
Santa Barbara 3 248 251
Santa Cruz 6 106 112
LBL 0 223 223
LLL 0 66 66
Los Alamos n/a 0 0
Other - UC 2 111 113
U.S. Forestry 0
Other-Network UC n/a 502 502
_______ ______ _____
1,354 3,426 4,780
Number of FIND commands by database
CC database 4,658
CCT database 122
Total number of FIND commands 4,780
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 516 11,516 12,032
Davis 3,644 76 3,720
Irvine 1,925 0 1,925
Los Angeles 0 6,135 6,135
Riverside 464 1,144 1,608
San Diego 597 3,816 4,413
San Francisco 3,015 0 3,015
Santa Barbara 5 3,468 3,473
Santa Cruz 0 715 715
LBL 0 2,261 2,261
LLL 0 1,674 1,674
Los Alamos n/a 0 0
Other - UC 2 1,460 1,462
U.S. Forestry 0
Other-Network UC n/a 3,178 3,178
_______ ______ _____
10,168 35,443 45,611
Number of Records Displayed by database:
CC database 41,274
CCT database 4,337
Total number of Records Displayed 45,611
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 95.4%
Percent of CCT sessions 4.6%
Percent of searches done in the CC database 97.4%
Percent of searches done in the CCT database 2.6%
1.5 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
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
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Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 593:00
Average number of searches completed per session 3.1
Retrievals per search - median 9.0
Retrievals per search - average 628.4
Retrievals per search - standard deviation 5613.2
Percent of searches completed with 0 results 21.1%
Percent of searches entered that are long 0.5%
Percent of long searches completed
(includes partial results) 72.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,228 36.3%
DISPLAY (excluding automatic displays) 3,676 31.6%
HELP 65 0.6%
EXPLAIN 65 0.6%
SET/RESET 583 5.0%
SHOW 15 0.1%
ADD ON (AND, OR, AND NOT) 430 3.7%
LOGON or LOGOFF 1,908 16.4%
COMMENT 0 0.0%
SAVE 179 1.5%
USE 2 0.0%
OTHER 498 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 1,884 40.5% 293 15.6% 32 180.1 765.9
TITLE WORD 1,416 30.4% 444 31.4% 12 571.8 4645.2
EXACT TITLE 74 1.6% 31 41.9% 1 9.7 23.7
JOURNAL 261 5.6% 73 28.0% 1,305 3732.5 6516.7
EXACT JOURNAL 163 3.5% 41 25.2% 2,983 10636.3 28906.3
SUBJECT CAT 12 0.3% 0 0.0% 10 344.3 1141.0
SUBFILE 8 0.2% 0 0.0% 86 121.0 87.8
PUBLICATION TYPE 24 0.5% 2 8.3% 69 104.6 184.7
LANGUAGE 3 0.1% 0 0.0% 1,008 1008.0 0.0
DATE 78 1.7% 14 17.9% 10 129.9 339.0
ADDED 65 1.4% 16 24.6% 3 10.5 16.0
PERIODICAL 417 9.0% 32 7.7% 4 27.3 107.0
EXACT PE 65 1.4% 2 3.1% 3 13.0 31.2
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 185 4.0% 62 33.5% 18 218.2 646.9
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 435 10.3% 123 28.3% 5 74.1 314.0
Single 3,774 89.7% 762 20.2% 27 947.3 6940.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.4%
SHORT 71.2%
LONG 3.5%
FIELDS 3.0%
PERIODICALS 17.6%
COMMENTS 0.0%
Other 1.4%
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) 38:14
Average number of searches completed per session 1.7
Retrievals per search - median 101.5
Retrievals per search - average 462.9
Retrievals per search - standard deviation 2164.5
Percent of searches completed with 0 results 27.0%
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 122 23.9%
DISPLAY (excluding automatic displays) 204 39.9%
HELP 37 7.2%
EXPLAIN 11 2.2%
SET/RESET 47 9.2%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 70 13.7%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 20 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:
JOURNAL 50 41.0% 18 36.0% 162 970.4 4124.7
EXACT JOURNAL 68 55.7% 15 22.1% 201 477.2 670.9
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 3.3% 0 0.0% 23 30.5 28.9
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 122 100% 33 27.0% 164 634.5 2516.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
ISSUES 44.4%
SHORT 19.7%
LONG 28.7%
PERIODICALS 4.5%
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 7.0%
Ten most frequent errors:
1. First word of command is invalid 30.5%
2. NS command - no next screen 29.3%
3. FIND command with invalid index name 10.5%
4. DISPLAY command - no FIND results 3.6%
5. DISPLAY command contains invalid word 3.6%
6. Index invalid in current database 3.3%
7. PS command - no previous screen 2.1%
8. Search term missing from search command 1.6%
9. D ABS command in database w/o abstracts 1.4%
10. Valid command at an inappropriate time 1.0%
11. All others 13.2%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 15.8%
2. FIND (CC DB) 15.8%
3. CC INDEXES 10.5%
4. CURRENT DATES 6.6%
5. CCT DATABASE 6.6%
6. Unrecognized term 5.3%
7. COMMANDS 5.3%
8. LOCATE (ARTICLE DBS) 3.9%
9. DISPLAY 3.9%
10. CC DATABASE 3.9%
11. All others 22.4%
Ten most frequent HELP situations:
1. First word of command is invalid 16.3%
2. Help requested from START CC command 15.7%
3. FIND command with invalid index name 8.4%
4. DISPLAY command-first of >1 screen 7.9%
5. F/BR with index invalid in current DB 6.7%
6. Help requested from SET DB command 6.2%
7. FIND command with zero results 3.9%
8. FIND command retrieves >1 book 3.4%
9. DISPLAY command-complete in one screen 3.4%
10. DISPLAY command contains invalid word 2.8%
11. All others 25.3%
Ten most frequent SHOW requests:
1. HISTORY 86.7%
2. CC NEWS 6.7%
3. DATABASES 6.7%
11. All others 0.0%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)