MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 01/26/02 through 02/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 57 539 596
Davis 274 28 302
Irvine 129 0 129
Los Angeles 0 151 151
Riverside 18 77 95
San Diego 31 137 168
San Francisco 102 0 102
Santa Barbara 5 71 76
Santa Cruz 18 36 54
LBL 0 117 117
LLL 0 33 33
Los Alamos n/a 0 0
Other - UC 1 47 48
U.S. Forestry 0
Other-Network UC n/a 570 570
_______ ______ _____
635 1,806 2,441
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 68 200 1,468
2-4 a.m. 22 66 7,848
4-6 a.m. 26 58 710
6-8 a.m. 60 232 2,067
8-10 a.m. 302 794 7,333
10-12 a.m. 490 1,498 10,959
12-2 p.m. 407 1,207 12,750
2-4 p.m. 450 1,412 12,172
4-6 p.m. 318 1,015 10,089
6-8 p.m. 130 497 4,903
8-10 p.m. 81 299 2,648
10-12 p.m. 87 217 1,333
__________ __________ __________ _________________
Total: 2,441 7,495 74,280
1.2 FIND commands
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Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 142 1,598 1,740
Davis 798 61 859
Irvine 336 0 336
Los Angeles 0 605 605
Riverside 58 294 352
San Diego 108 391 499
San Francisco 662 0 662
Santa Barbara 16 237 253
Santa Cruz 25 127 152
LBL 0 251 251
LLL 0 203 203
Los Alamos n/a 0 0
Other - UC 4 142 146
U.S. Forestry 0
Other-Network UC n/a 1,437 1,437
_______ ______ _____
2,149 5,346 7,495
Number of FIND commands by database
CC database 7,321
CCT database 174
Total number of FIND commands 7,495
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,710 15,361 18,071
Davis 6,745 296 7,041
Irvine 10,733 0 10,733
Los Angeles 0 4,908 4,908
Riverside 700 2,957 3,657
San Diego 371 4,921 5,292
San Francisco 3,650 0 3,650
Santa Barbara 72 2,305 2,377
Santa Cruz 354 968 1,322
LBL 0 3,694 3,694
LLL 0 659 659
Los Alamos n/a 0 0
Other - UC 18 1,268 1,286
U.S. Forestry 0
Other-Network UC n/a 11,590 11,590
_______ ______ _____
25,353 48,927 74,280
Number of Records Displayed by database:
CC database 67,716
CCT database 6,564
Total number of Records Displayed 74,280
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 97.7%
Percent of searches done in the CCT database 2.3%
1.5 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 3.4
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) 260:40
Average number of searches completed per session 3.1
Retrievals per search - median 9.0
Retrievals per search - average 633.0
Retrievals per search - standard deviation 5433.6
Percent of searches completed with 0 results 21.6%
Percent of searches entered that are long 0.5%
Percent of long searches completed
(includes partial results) 73.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,452 36.0%
DISPLAY (excluding automatic displays) 5,440 30.3%
HELP 111 0.6%
EXPLAIN 110 0.6%
SET/RESET 960 5.4%
SHOW 17 0.1%
ADD ON (AND, OR, AND NOT) 869 4.8%
LOGON or LOGOFF 2,916 16.3%
COMMENT 0 0.0%
SAVE 352 2.0%
USE 0 0.0%
OTHER 707 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:
PERSONAL AUTHOR 2,965 42.0% 422 14.2% 30 197.1 1204.5
TITLE WORD 2,294 32.5% 662 28.9% 13 1086.3 9402.9
EXACT TITLE 75 1.1% 44 58.7% 4 27.6 72.8
JOURNAL 498 7.1% 170 34.1% 1,281 5158.7 12115.8
EXACT JOURNAL 131 1.9% 33 25.2% 1,183 5259.6 9428.0
SUBJECT CAT 14 0.2% 2 14.3% 26 309.8 771.6
SUBFILE 14 0.2% 1 7.1% 80 71.6 42.9
PUBLICATION TYPE 13 0.2% 1 7.7% 12 47.6 101.7
LANGUAGE 5 0.1% 1 20.0% 200 196.8 216.3
DATE 153 2.2% 42 27.4% 6 74.2 181.3
ADDED 9 0.1% 2 22.2% 32 51.6 47.2
PERIODICAL 559 7.9% 73 13.1% 5 43.3 184.0
EXACT PE 93 1.3% 3 3.2% 4 17.6 45.7
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 240 3.4% 90 37.5% 15 273.6 730.5
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 582 9.0% 180 30.9% 4 49.2 189.6
Single 5,850 90.9% 1,167 19.9% 28 965.3 6756.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.2%
SHORT 70.7%
LONG 5.7%
FIELDS 1.1%
PERIODICALS 15.6%
COMMENTS 0.0%
Other 1.7%
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) 87:52
Average number of searches completed per session 1.7
Retrievals per search - median 66.0
Retrievals per search - average 291.1
Retrievals per search - standard deviation 772.1
Percent of searches completed with 0 results 31.0%
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 174 24.3%
DISPLAY (excluding automatic displays) 270 37.7%
HELP 52 7.3%
EXPLAIN 19 2.6%
SET/RESET 59 8.2%
SHOW 3 0.4%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 116 16.2%
COMMENT 0 0.0%
SAVE 1 0.1%
USE 0 0.0%
OTHER 23 3.2%
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 117 67.2% 39 33.3% 221 570.0 1061.7
EXACT JOURNAL 55 31.6% 15 27.3% 66 154.6 350.7
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 2 1.1% 0 0.0% 9 8.5 10.6
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 174 100% 54 31.0% 151 422.2 900.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.9%
ISSUES 42.8%
SHORT 10.6%
LONG 43.4%
PERIODICALS 0.6%
COMMENTS 0.0%
Other 1.6%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
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Percent of commands that contained errors 7.2%
Ten most frequent errors:
1. NS command - no next screen 30.1%
2. First word of command is invalid 28.6%
3. FIND command with invalid index name 11.4%
4. Index invalid in current database 4.3%
5. DISPLAY command contains invalid word 2.8%
6. Search term missing from search command 2.1%
7. PS command - no previous screen 1.9%
8. Valid command at an inappropriate time 1.8%
9. 1281 1.5%
10. DISPLAY command - no FIND results 1.4%
11. All others 14.1%
Ten most frequent EXPLAIN requests:
1. FIND (CC DB) 20.2%
2. CC GUIDE 11.6%
3. CC INDEXES 10.1%
4. COMMANDS 7.0%
5. LOCATE (ARTICLE DBS) 5.4%
6. Unrecognized term 3.9%
7. DATABASES 3.9%
8. CC DATABASE 3.9%
9. CCT DATABASE 3.9%
10. DISPLAY 3.1%
11. All others 27.1%
Ten most frequent HELP situations:
1. Help requested from START CC command 17.1%
2. First word of command is invalid 13.7%
3. FIND command with invalid index name 10.3%
4. F/BR with index invalid in current DB 9.6%
5. Help requested from SET DB command 6.8%
6. FIND command with zero results 5.8%
7. DISPLAY command-first of >1 screen 5.1%
8. DISPLAY command - middle of >1 screen 3.8%
9. DISPLAY command-complete in one screen 2.7%
10. NS command - no next screen 2.1%
11. All others 22.9%
Ten most frequent SHOW requests:
1. HISTORY 40.0%
2. MAIL STATUS 20.0%
3. SYSTEM NEWS 10.0%
4. 2292 5.0%
5. SC 5.0%
6. CC GLOSSARY 5.0%
7. CC NEWS 5.0%
8. SEARCH 5.0%
9. UPDATE 5.0%
11. All others 0.0%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)