MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 12/30/00 through 01/05/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 42 573 615
Davis 276 31 307
Irvine 163 0 163
Los Angeles 26 172 198
Riverside 26 45 71
San Diego 38 222 260
San Francisco 138 0 138
Santa Barbara 13 111 124
Santa Cruz 21 65 86
LBL 0 113 113
LLL 0 47 47
Los Alamos n/a 0 0
Other - UC 0 19 19
U.S. Forestry 0
Other-Network UC n/a 324 324
_______ ______ _____
743 1,722 2,465
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 32 118 1,171
2-4 a.m. 36 167 917
4-6 a.m. 32 164 1,008
6-8 a.m. 77 199 1,919
8-10 a.m. 251 661 6,672
10-12 a.m. 423 1,059 10,035
12-2 p.m. 441 1,328 14,007
2-4 p.m. 517 1,370 13,970
4-6 p.m. 391 1,069 11,156
6-8 p.m. 120 347 2,075
8-10 p.m. 90 378 2,308
10-12 p.m. 55 228 2,090
__________ __________ __________ _________________
Total: 2,465 7,088 67,328
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 113 1,641 1,754
Davis 779 68 847
Irvine 498 0 498
Los Angeles 58 481 539
Riverside 43 116 159
San Diego 100 659 759
San Francisco 388 0 388
Santa Barbara 40 379 419
Santa Cruz 65 146 211
LBL 0 295 295
LLL 0 126 126
Los Alamos n/a 0 0
Other - UC 1 55 56
U.S. Forestry 0
Other-Network UC n/a 1,037 1,037
_______ ______ _____
2,085 5,003 7,088
Number of FIND commands by database
CC database 6,886
CCT database 202
Total number of FIND commands 7,088
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,462 20,642 22,104
Davis 7,369 260 7,629
Irvine 3,118 0 3,118
Los Angeles 288 3,312 3,600
Riverside 244 1,414 1,658
San Diego 1,389 4,940 6,329
San Francisco 3,226 0 3,226
Santa Barbara 339 4,977 5,316
Santa Cruz 843 1,337 2,180
LBL 0 2,341 2,341
LLL 0 2,179 2,179
Los Alamos n/a 0 0
Other - UC 0 613 613
U.S. Forestry 0
Other-Network UC n/a 7,035 7,035
_______ ______ _____
18,278 49,050 67,328
Number of Records Displayed by database:
CC database 62,479
CCT database 4,849
Total number of Records Displayed 67,328
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 95.7%
Percent of CCT sessions 4.3%
Percent of searches done in the CC database 97.1%
Percent of searches done in the CCT database 2.8%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
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
___________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 753:00
Average number of searches completed per session 2.9
Retrievals per search - median 13.0
Retrievals per search - average 460.4
Retrievals per search - standard deviation 4781.7
Percent of searches completed with 0 results 20.7%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 42.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,395 35.8%
DISPLAY (excluding automatic displays) 5,422 30.3%
HELP 157 0.9%
EXPLAIN 186 1.0%
SET/RESET 879 4.9%
SHOW 28 0.2%
ADD ON (AND, OR, AND NOT) 491 2.7%
LOGON or LOGOFF 3,130 17.5%
COMMENT 0 0.0%
SAVE 365 2.0%
USE 4 0.0%
OTHER 825 4.6%
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 3,601 52.1% 527 14.6% 31 217.9 1386.3
TITLE WORD 2,163 31.3% 616 28.5% 17 527.3 2614.1
EXACT TITLE 30 0.4% 12 40.0% 1 40.3 153.8
JOURNAL 257 3.7% 95 37.0% 348 3266.2 9956.6
EXACT JOURNAL 88 1.3% 32 36.4% 1,617 3770.1 8878.3
SUBJECT CAT 34 0.5% 6 17.6% 4 318.3 1120.7
SUBFILE 20 0.3% 1 5.0% 22 76.4 109.9
PUBLICATION TYPE 45 0.7% 9 20.0% 15 12415.9 51464.8
LANGUAGE 2 0.0% 0 0.0% 64 63.5 0.7
DATE 67 1.0% 16 23.9% 15 164.6 456.8
ADDED 50 0.7% 15 30.0% 4 8.7 10.2
PERIODICAL 185 2.7% 34 18.4% 6 141.7 694.9
EXACT PE 28 0.4% 1 3.6% 2 8.6 16.3
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 335 4.9% 105 31.3% 21 1501.9 8337.7
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 524 8.2% 167 31.9% 6 73.7 378.8
Single 5,846 91.8% 1,130 19.3% 32 637.6 5690.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 79.8%
LONG 8.0%
FIELDS 2.3%
PERIODICALS 4.9%
COMMENTS 0.0%
Other 2.1%
2.1 CCT Database Statistics
____________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 47:33
Average number of searches completed per session 1.9
Retrievals per search - median 46.0
Retrievals per search - average 259.1
Retrievals per search - standard deviation 781.1
Percent of searches completed with 0 results 29.2%
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 202 26.2%
DISPLAY (excluding automatic displays) 290 37.6%
HELP 35 4.5%
EXPLAIN 27 3.5%
SET/RESET 65 8.4%
SHOW 9 1.2%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 107 13.9%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 36 4.7%
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 144 70.6% 43 29.9% 77 356.9 1027.5
EXACT JOURNAL 56 27.4% 15 26.8% 179 397.3 531.3
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 2 1.0% 2 100% 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 1.0% 1 50.0% 1 1.0 0.0
By number of indexes:
Multiple 2 1.0% 2 100% 0 0.0 0.0
Single 200 99.0% 57 28.5% 89 366.0 907.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 19.8%
ISSUES 38.6%
SHORT 34.9%
LONG 5.7%
PERIODICALS 0.3%
COMMENTS 0.0%
Other 0.7%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 31.5%
2. First word of command is invalid 28.2%
3. FIND command with invalid index name 9.9%
4. Index invalid in current database 3.6%
5. DISPLAY command - no FIND results 3.0%
6. D ABS command in database w/o abstracts 2.9%
7. Search term missing from search command 2.0%
8. DISPLAY command contains invalid word 1.9%
9. Command contains escape or arrow key 1.6%
10. PS command - no previous screen 1.5%
11. All others 13.8%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 11.7%
2. FIND (CC DB) 9.9%
3. CC INDEXES 9.9%
4. COMMANDS 8.0%
5. Unrecognized term 6.6%
6. CC DATABASE 5.2%
7. MAIL 4.2%
8. ADD-ON SEARCH 3.3%
9. 5378 3.3%
10. Unrecognized term-reminders off 2.8%
11. All others 35.2%
Ten most frequent HELP situations:
1. Help requested from START CC command 16.5%
2. First word of command is invalid 12.6%
3. FIND command with invalid index name 7.2%
4. DISPLAY command - middle of >1 screen 6.4%
5. DISPLAY command-first of >1 screen 5.4%
6. FIND command retrieves >1 book 5.2%
7. Help requested from SET DB command 5.2%
8. F/BR with index invalid in current DB 5.2%
9. FIND command with zero results 4.9%
10. NS command - no next screen 3.7%
11. All others 27.7%
Ten most frequent SHOW requests:
1. HISTORY 38.9%
2. SEARCH 22.2%
3. CC SETTINGS 11.1%
4. SYSTEM NEWS 8.3%
5. SC LIST (CC DBS) 5.6%
6. DATABASES 5.6%
7. GLOSSARY 2.8%
8. SYSTEM5 NEWS 2.8%
9. CC GLOSSARY 2.8%
11. All others 0.0%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)