MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/12/01 through 05/18/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 72 233 305
Davis 175 3 178
Irvine 54 0 54
Los Angeles 5 86 91
Riverside 14 27 41
San Diego 20 66 86
San Francisco 50 0 50
Santa Barbara 5 21 26
Santa Cruz 10 73 83
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 0 10 10
Other-Network UC n/a 435 435
_______ ______ _____
405 958 1,363
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,177 3,439 41,418
BIO88 186 396 7,320
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 44 245
2-4 a.m. 20 53 263
4-6 a.m. 5 9 37
6-8 a.m. 57 109 888
8-10 a.m. 164 441 3,749
10-12 a.m. 264 724 6,341
12-2 p.m. 243 710 15,118
2-4 p.m. 245 742 6,035
4-6 p.m. 222 545 12,448
6-8 p.m. 62 284 1,888
8-10 p.m. 46 123 1,221
10-12 p.m. 22 51 505
__________ __________ __________ _________________
Total: 1,363 3,835 48,738
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 262 676 938
Davis 488 4 492
Irvine 144 0 144
Los Angeles 8 270 278
Riverside 68 176 244
San Diego 62 180 242
San Francisco 222 0 222
Santa Barbara 10 63 73
Santa Cruz 66 160 226
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 0 26 26
Other-Network UC n/a 937 937
_______ ______ _____
1,330 2,505 3,835
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,247 6,419 8,666
Davis 21,210 2 21,212
Irvine 2,255 0 2,255
Los Angeles 26 2,694 2,720
Riverside 416 1,266 1,682
San Diego 64 1,586 1,650
San Francisco 1,236 0 1,236
Santa Barbara 13 443 456
Santa Cruz 522 924 1,446
Lawrence Berkeley 0 10 10
Lawrence Livermore 0 48 48
Los Alamos 0 0 0
Other - UC 0 233 233
Other-Network UC n/a 7,124 7,124
_______ ______ _____
27,989 20,749 48,738
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 7:49
Average session length (minutes:seconds) 12:28
Longest session recorded (minutes:seconds) 349:44
Average number of searches completed per session 2.8
Retrievals per search - median 9.0
Retrievals per search - average 684.5
Retrievals per search - standard deviation 5818.9
Percent of searches completed with 0 results 23.7%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 59.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,348 30.1%
DISPLAY (excluding automatic displays) 4,274 38.4%
BROWSE 0 0.0%
HELP 123 1.1%
EXPLAIN 113 1.0%
SET/RESET 667 6.0%
SHOW 33 0.3%
ADD ON (AND, OR, AND NOT) 487 4.4%
LOGON or LOGOFF 1,483 13.3%
COMMENT 0 0.0%
SAVE 245 2.2%
USE 4 0.0%
OTHER 347 3.1%
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:
PERSONAL AUTHOR 1,374 36.0% 274 19.9% 24 123.1 474.9
TITLE WORD 599 15.7% 231 38.6% 9 269.6 1369.0
EXACT TITLE 31 0.8% 11 35.5% 2 21.3 60.6
KEYWORD 1,204 31.6% 217 18.0% 30 1743.2 10598.4
JOURNAL 193 5.1% 94 48.7% 432 4564.0 10828.8
EXACT JOURNAL 54 1.4% 25 46.3% 313 2358.4 4589.4
SOURCE 6 0.2% 6 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 3 0.1% 2 66.7% 21 21.0 0.0
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 3 0.1% 2 66.7% 21 21.0 0.0
PUBLICATION TYPE 2 0.1% 2 100% 0 0.0 0.0
DATE 12 0.3% 1 8.3% 34 487.2 1029.6
LANGUAGE 1 0.0% 0 0.0% 33 33.0 0.0
ADDED 1 0.0% 0 0.0% 22 22.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 8 0.2% 2 25.0% 34 643.3 1499.5
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 136 3.6% 29 21.3% 4 350.4 2328.4
EXACT PE 24 0.6% 0 0.0% 2 22.7 57.0
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 160 4.2% 33 20.6% 19 334.9 1461.3
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 451 13.6% 143 31.7% 6 102.0 452.2
Single 2,860 86.4% 627 21.9% 31 1120.7 7543.2
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
CONCEPT CODES 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.4%
SHORT 87.4%
LONG 1.1%
TAGS 0.3%
FIELDS 1.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.2%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 31.6%
2. First word of command is invalid 29.5%
3. FIND command with invalid index name 10.3%
4. PS command - no previous screen 4.1%
5. DISPLAY command contains invalid word 3.4%
6. Valid command at an inappropriate time 2.0%
7. DATE search with unrecognized word 1.6%
8. Search term missing from search command 1.4%
9. Command contains escape or arrow key 1.4%
10. DISPLAY command-record numbers too large 1.2%
11. All others 13.4%
Ten most frequent EXPLAIN requests:
1. INDEXES 17.7%
2. LOCATE (BIO DB) 17.7%
3. FIND 12.4%
4. COMMANDS 8.8%
5. GUIDE 7.1%
6. BIOSIS DATABASE 6.2%
7. B334 3.5%
8. Unrecognized term 3.5%
9. BIOSIS NEWS 2.7%
10. DISPLAY 2.7%
11. All others 17.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.5%
2. First word of command is invalid 12.3%
3. FIND command with invalid index name 8.9%
4. FIND command with zero results 7.6%
5. DISPLAY command-first of >1 screen 7.6%
6. DISPLAY command - middle of >1 screen 7.2%
7. DISPLAY command-complete in one screen 5.9%
8. NS command - no next screen 4.2%
9. 3 HELP commands issued from same code 3.8%
10. FIND command retrieves >1 book 3.0%
11. All others 16.9%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. BIOSIS NEWS 9.1%
3. SEARCH 9.1%
4. MAIL STATUS 6.1%
5. PUBLICATION TYPES 3.0%
6. SETTINGS 3.0%
7. MAIL SETTINGS 3.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)