MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 12/02/00 through 12/08/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 112 740 852
Davis 407 34 441
Irvine 287 0 287
Los Angeles 61 326 387
Riverside 49 62 111
San Diego 56 248 304
San Francisco 182 0 182
Santa Barbara 51 172 223
Santa Cruz 25 80 105
LBL 0 148 148
LLL 0 97 97
Los Alamos n/a 0 0
Other - UC 2 42 44
U.S. Forestry 0
Other-Network UC n/a 405 405
_______ ______ _____
1,232 2,354 3,586
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 53 227 1,830
2-4 a.m. 38 219 1,157
4-6 a.m. 45 158 1,134
6-8 a.m. 95 488 6,854
8-10 a.m. 360 1,244 11,326
10-12 a.m. 682 1,891 18,167
12-2 p.m. 615 1,597 15,702
2-4 p.m. 666 1,742 19,109
4-6 p.m. 532 1,310 12,997
6-8 p.m. 242 665 7,053
8-10 p.m. 164 448 3,835
10-12 p.m. 94 348 3,216
__________ __________ __________ _________________
Total: 3,586 10,337 102,380
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 307 1,981 2,288
Davis 1,211 61 1,272
Irvine 960 0 960
Los Angeles 132 866 998
Riverside 136 137 273
San Diego 131 590 721
San Francisco 500 0 500
Santa Barbara 123 636 759
Santa Cruz 63 267 330
LBL 0 458 458
LLL 0 691 691
Los Alamos n/a 0 0
Other - UC 6 97 103
U.S. Forestry 0
Other-Network UC n/a 984 984
_______ ______ _____
3,569 6,768 10,337
Number of FIND commands by database
CC database 10,171
CCT database 166
Total number of FIND commands 10,337
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,119 19,533 24,652
Davis 9,573 429 10,002
Irvine 5,397 0 5,397
Los Angeles 566 9,924 10,490
Riverside 664 1,752 2,416
San Diego 883 5,160 6,043
San Francisco 3,380 0 3,380
Santa Barbara 1,725 8,056 9,781
Santa Cruz 324 3,753 4,077
LBL 0 6,015 6,015
LLL 0 9,067 9,067
Los Alamos n/a 0 0
Other - UC 9 1,969 1,978
U.S. Forestry 0
Other-Network UC n/a 9,082 9,082
_______ ______ _____
27,640 74,740 102,380
Number of Records Displayed by database:
CC database 96,277
CCT database 6,103
Total number of Records Displayed 102,380
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 95.3%
Percent of CCT sessions 4.7%
Percent of searches done in the CC database 98.4%
Percent of searches done in the CCT database 1.6%
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 3.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 3.7
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) 781:20
Average number of searches completed per session 3.0
Retrievals per search - median 10.0
Retrievals per search - average 597.0
Retrievals per search - standard deviation 8083.1
Percent of searches completed with 0 results 23.4%
Percent of searches entered that are long 0.4%
Percent of long searches completed
(includes partial results) 75.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,500 37.0%
DISPLAY (excluding automatic displays) 7,477 29.1%
HELP 285 1.1%
EXPLAIN 292 1.1%
SET/RESET 1,256 4.9%
SHOW 52 0.2%
ADD ON (AND, OR, AND NOT) 671 2.6%
LOGON or LOGOFF 4,552 17.7%
COMMENT 0 0.0%
SAVE 297 1.2%
USE 10 0.0%
OTHER 1,294 5.0%
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 4,482 41.7% 634 14.1% 31 247.0 2104.8
TITLE WORD 3,519 32.8% 933 26.5% 15 731.4 4554.6
EXACT TITLE 69 0.6% 36 52.2% 2 22.9 61.7
JOURNAL 454 4.2% 196 43.2% 340 8376.1 45879.6
EXACT JOURNAL 512 4.8% 295 57.6% 41 1282.4 5021.6
SUBJECT CAT 57 0.5% 10 17.5% 31 42.9 48.7
SUBFILE 17 0.2% 1 5.9% 42 734.2 1856.3
PUBLICATION TYPE 42 0.4% 5 11.9% 8 73.1 192.3
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 175 1.6% 22 12.6% 15 147.4 604.1
ADDED 518 4.8% 338 65.3% 25 34.6 38.0
PERIODICAL 299 2.8% 60 20.1% 8 154.7 936.9
EXACT PE 59 0.5% 10 16.9% 2 8.0 12.4
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 542 5.0% 178 32.8% 13 1181.4 6593.6
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 1,254 13.2% 537 42.8% 11 89.5 582.6
Single 8,214 86.8% 1,633 19.9% 30 861.0 9926.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.7%
SHORT 81.2%
LONG 5.5%
FIELDS 2.1%
PERIODICALS 5.7%
COMMENTS 0.0%
Other 1.8%
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) 243:17
Average number of searches completed per session 1.0
Retrievals per search - median 46.0
Retrievals per search - average 352.6
Retrievals per search - standard deviation 1384.7
Percent of searches completed with 0 results 29.5%
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 166 17.5%
DISPLAY (excluding automatic displays) 283 29.8%
HELP 97 10.2%
EXPLAIN 66 6.9%
SET/RESET 122 12.8%
SHOW 15 1.6%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 153 16.1%
COMMENT 0 0.0%
SAVE 1 0.1%
USE 0 0.0%
OTHER 47 4.9%
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 108 65.1% 38 35.2% 103 270.0 473.4
EXACT JOURNAL 44 26.5% 9 20.5% 46 151.3 238.4
SUBJECT CAT 3 1.8% 0 0.0% 7,262 7262.0 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 6.6% 2 18.2% 2 1393.8 4153.3
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 166 100% 49 29.5% 77 500.2 1628.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.2%
ISSUES 45.4%
SHORT 15.0%
LONG 29.8%
PERIODICALS 4.0%
COMMENTS 0.0%
Other 0.6%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. First word of command is invalid 30.7%
2. NS command - no next screen 29.9%
3. FIND command with invalid index name 9.8%
4. Index invalid in current database 5.2%
5. DISPLAY command contains invalid word 2.5%
6. PS command - no previous screen 2.3%
7. Search term missing from search command 2.0%
8. D ABS command in database w/o abstracts 1.7%
9. Valid command at an inappropriate time 1.6%
10. Add-on search, no index name after verb 1.2%
11. All others 13.0%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 17.0%
2. FIND (CC DB) 12.3%
3. CC INDEXES 9.8%
4. LOCATE (ARTICLE DBS) 7.8%
5. Unrecognized term 6.1%
6. DATABASES 4.2%
7. COMMANDS 4.2%
8. CCT DATABASE 4.2%
9. FIND (CCT DB) 2.5%
10. DISPLAY 2.2%
11. All others 29.6%
Ten most frequent HELP situations:
1. First word of command is invalid 16.5%
2. Help requested from START CC command 12.6%
3. F/BR with index invalid in current DB 10.1%
4. FIND command with invalid index name 7.6%
5. FIND command with zero results 7.0%
6. Help requested from SET DB command 6.1%
7. DISPLAY command - middle of >1 screen 5.9%
8. DISPLAY command-complete in one screen 4.5%
9. DISPLAY command-first of >1 screen 3.1%
10. FIND command retrieves >1 book 3.0%
11. All others 23.6%
Ten most frequent SHOW requests:
1. HISTORY 46.6%
2. SYSTEM NEWS 6.9%
3. CC NEWS 6.9%
4. SC LIST (CC DBS) 6.9%
5. SEARCH 6.9%
6. GLOSSARY 5.2%
7. UPDATE 5.2%
8. CC GLOSSARY 3.4%
9. SYSTEM1 NEWS 1.7%
10. CC SETTINGS 1.7%
11. All others 8.6%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)