MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 02/09/02 through 02/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 57 466 523
Davis 232 20 252
Irvine 119 0 119
Los Angeles 5 156 161
Riverside 14 23 37
San Diego 33 163 196
San Francisco 117 0 117
Santa Barbara 4 88 92
Santa Cruz 5 51 56
LBL 0 64 64
LLL 0 30 30
Los Alamos n/a 0 0
Other - UC 0 45 45
U.S. Forestry 0
Other-Network UC n/a 502 502
_______ ______ _____
586 1,608 2,194
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 32 92 1,429
2-4 a.m. 34 95 8,112
4-6 a.m. 15 51 263
6-8 a.m. 91 216 1,341
8-10 a.m. 254 629 5,811
10-12 a.m. 459 1,390 9,033
12-2 p.m. 348 1,103 11,163
2-4 p.m. 416 1,271 11,107
4-6 p.m. 282 766 6,999
6-8 p.m. 99 278 2,404
8-10 p.m. 93 315 1,893
10-12 p.m. 71 210 1,494
__________ __________ __________ _________________
Total: 2,194 6,416 61,049
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 101 1,367 1,468
Davis 686 45 731
Irvine 407 0 407
Los Angeles 14 434 448
Riverside 42 109 151
San Diego 134 438 572
San Francisco 650 0 650
Santa Barbara 26 211 237
Santa Cruz 6 130 136
LBL 0 175 175
LLL 0 100 100
Los Alamos n/a 0 0
Other - UC 1 152 153
U.S. Forestry 0
Other-Network UC n/a 1,188 1,188
_______ ______ _____
2,067 4,349 6,416
Number of FIND commands by database
CC database 6,303
CCT database 113
Total number of FIND commands 6,416
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 686 13,935 14,621
Davis 5,874 482 6,356
Irvine 10,507 0 10,507
Los Angeles 73 3,163 3,236
Riverside 85 863 948
San Diego 1,112 3,665 4,777
San Francisco 3,904 0 3,904
Santa Barbara 64 3,184 3,248
Santa Cruz 191 1,165 1,356
LBL 0 2,478 2,478
LLL 0 460 460
Los Alamos n/a 0 0
Other - UC 5 1,742 1,747
U.S. Forestry 0
Other-Network UC n/a 7,411 7,411
_______ ______ _____
22,501 38,548 61,049
Number of Records Displayed by database:
CC database 57,631
CCT database 3,418
Total number of Records Displayed 61,049
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 96.7%
Percent of CCT sessions 3.3%
Percent of searches done in the CC database 98.2%
Percent of searches done in the CCT database 1.8%
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 4.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 4.2
2.0 CC Database Statistics
___________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 254:11
Average number of searches completed per session 3.0
Retrievals per search - median 8.0
Retrievals per search - average 586.1
Retrievals per search - standard deviation 8480.7
Percent of searches completed with 0 results 22.0%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 78.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,681 36.7%
DISPLAY (excluding automatic displays) 4,506 29.1%
HELP 130 0.8%
EXPLAIN 107 0.7%
SET/RESET 887 5.7%
SHOW 15 0.1%
ADD ON (AND, OR, AND NOT) 622 4.0%
LOGON or LOGOFF 2,604 16.8%
COMMENT 0 0.0%
SAVE 256 1.7%
USE 2 0.0%
OTHER 658 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 2,548 40.2% 396 15.5% 29 200.3 875.1
TITLE WORD 2,004 31.6% 616 30.7% 13 950.1 16709.7
EXACT TITLE 81 1.3% 42 51.9% 3 165.5 825.8
JOURNAL 333 5.3% 94 28.2% 901 4088.9 12370.2
EXACT JOURNAL 173 2.7% 45 26.0% 2,459 5555.7 10536.4
SUBJECT CAT 24 0.4% 1 4.2% 22 138.2 297.5
SUBFILE 7 0.1% 2 28.6% 34 66.0 79.0
PUBLICATION TYPE 21 0.3% 3 14.3% 13 3431.9 14121.6
LANGUAGE 58 0.9% 3 5.2% 3 21.3 87.4
DATE 199 3.1% 32 16.1% 5 39.2 105.3
ADDED 38 0.6% 5 13.2% 8 13.0 14.1
PERIODICAL 495 7.8% 63 12.7% 4 88.7 808.8
EXACT PE 64 1.0% 6 9.4% 3 32.7 136.9
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 290 4.6% 92 31.7% 14 397.4 1731.7
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 585 10.3% 156 26.7% 5 32.7 106.5
Single 5,083 89.7% 1,078 21.2% 28 900.6 10601.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.6%
SHORT 71.2%
LONG 4.4%
FIELDS 1.2%
PERIODICALS 16.1%
COMMENTS 0.0%
Other 1.6%
2.1 CCT Database Statistics
____________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 25:53
Average number of searches completed per session 1.6
Retrievals per search - median 49.0
Retrievals per search - average 223.2
Retrievals per search - standard deviation 858.4
Percent of searches completed with 0 results 30.1%
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 111 22.9%
DISPLAY (excluding automatic displays) 167 34.5%
HELP 38 7.9%
EXPLAIN 24 5.0%
SET/RESET 48 9.9%
SHOW 4 0.8%
ADD ON (AND, OR, AND NOT) 2 0.4%
LOGON or LOGOFF 70 14.5%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 20 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:
JOURNAL 85 76.6% 30 35.3% 120 341.6 1076.1
EXACT JOURNAL 14 12.6% 3 21.4% 64 193.2 413.1
SUBJECT CAT 1 0.9% 0 0.0% 4,132 4132.0 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 11 9.9% 1 9.1% 3 17.4 38.1
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 111 100% 34 30.6% 94 327.5 1025.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.0%
ISSUES 61.1%
SHORT 8.6%
LONG 13.7%
PERIODICALS 10.9%
COMMENTS 0.0%
Other 1.7%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 7.3%
Ten most frequent errors:
1. NS command - no next screen 32.1%
2. First word of command is invalid 26.2%
3. FIND command with invalid index name 11.0%
4. Index invalid in current database 4.3%
5. DISPLAY command contains invalid word 2.6%
6. DISPLAY command - no FIND results 2.4%
7. Search term missing from search command 1.8%
8. D ABS command in database w/o abstracts 1.8%
9. Valid command at an inappropriate time 1.6%
10. PS command - no previous screen 1.5%
11. All others 14.7%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 20.6%
2. FIND (CC DB) 9.9%
3. CC INDEXES 7.6%
4. LOCATE (ARTICLE DBS) 6.1%
5. Unrecognized term 5.3%
6. CCT INDEXES 5.3%
7. SUBJECT CATEGORY 3.8%
8. DATABASES 3.1%
9. COMMANDS 3.1%
10. FIND LOCATION 2.3%
11. All others 32.8%
Ten most frequent HELP situations:
1. Help requested from START CC command 15.4%
2. First word of command is invalid 14.7%
3. FIND command with invalid index name 9.7%
4. F/BR with index invalid in current DB 9.7%
5. Help requested from SET DB command 8.0%
6. FIND command with zero results 4.7%
7. DISPLAY command-first of >1 screen 4.3%
8. DISPLAY command - middle of >1 screen 4.3%
9. FIND command retrieves >1 book 2.3%
10. DISPLAY command-complete in one screen 2.0%
11. All others 24.7%
Ten most frequent SHOW requests:
1. HISTORY 35.3%
2. CC NEWS 17.6%
3. TIME 11.8%
4. CC SETTINGS 11.8%
5. GLOSSARY 5.9%
6. SYSTEM NEWS 5.9%
7. CC GLOSSARY 5.9%
8. SEARCH 5.9%
11. All others 0.0%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)