MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/19/02 through 01/25/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 37 237 274
Davis 220 1 221
Irvine 22 0 22
Los Angeles 0 66 66
Riverside 3 26 29
San Diego 12 72 84
San Francisco 36 0 36
Santa Barbara 2 12 14
Santa Cruz 1 13 14
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 21 21
Los Alamos 0 0 0
Other - UC 8 32 40
Other-Network UC n/a 506 506
_______ ______ _____
341 997 1,338
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,187 3,822 35,720
BIO88 151 307 3,068
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 45 616
2-4 a.m. 20 44 177
4-6 a.m. 8 16 53
6-8 a.m. 22 54 436
8-10 a.m. 160 457 3,321
10-12 a.m. 293 904 6,012
12-2 p.m. 224 646 9,289
2-4 p.m. 279 824 7,158
4-6 p.m. 191 654 7,000
6-8 p.m. 78 282 2,896
8-10 p.m. 23 101 909
10-12 p.m. 30 102 921
__________ __________ __________ _________________
Total: 1,338 4,129 38,788
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 84 649 733
Davis 792 2 794
Irvine 62 0 62
Los Angeles 0 326 326
Riverside 4 156 160
San Diego 16 248 264
San Francisco 199 0 199
Santa Barbara 1 42 43
Santa Cruz 4 31 35
Lawrence Berkeley 0 20 20
Lawrence Livermore 0 106 106
Los Alamos 0 0 0
Other - UC 21 105 126
Other-Network UC n/a 1,261 1,261
_______ ______ _____
1,183 2,946 4,129
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,013 7,911 8,924
Davis 7,817 1 7,818
Irvine 402 0 402
Los Angeles 0 3,966 3,966
Riverside 8 483 491
San Diego 217 2,687 2,904
San Francisco 1,029 0 1,029
Santa Barbara 2 253 255
Santa Cruz 12 311 323
Lawrence Berkeley 0 274 274
Lawrence Livermore 0 4,000 4,000
Los Alamos 0 0 0
Other - UC 290 693 983
Other-Network UC n/a 7,419 7,419
_______ ______ _____
10,790 27,998 38,788
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.8
Standard deviation in seconds 24.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 1.0
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 10:29
Average session length (minutes:seconds) 16:14
Longest session recorded (minutes:seconds) 459:17
Average number of searches completed per session 3.1
Retrievals per search - median 10.0
Retrievals per search - average 2974.4
Retrievals per search - standard deviation 75379
Percent of searches completed with 0 results 21.8%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 76.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,351 28.8%
DISPLAY (excluding automatic displays) 4,536 39.0%
BROWSE 5 0.0%
HELP 109 0.9%
EXPLAIN 89 0.8%
SET/RESET 666 5.7%
SHOW 29 0.2%
ADD ON (AND, OR, AND NOT) 778 6.7%
LOGON or LOGOFF 1,481 12.7%
COMMENT 0 0.0%
SAVE 251 2.2%
USE 2 0.0%
OTHER 339 2.9%
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 1,225 32.5% 223 18.2% 25 229.9 911.7
TITLE WORD 617 16.4% 220 35.7% 5 775.5 10322.7
EXACT TITLE 29 0.8% 16 55.2% 2 39.8 74.7
KEYWORD 1,259 33.4% 237 18.8% 38 10327.4 150173
JOURNAL 185 4.9% 65 35.1% 605 4400.9 18640.8
EXACT JOURNAL 62 1.6% 21 33.9% 1,058 2365.1 4797.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 1 0.0% 0 0.0% 1 1.0 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 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 14 0.4% 6 42.9% 5 147.4 384.9
LANGUAGE 11 0.3% 0 0.0% 4 7.1 8.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 22 0.6% 4 18.2% 11 112.8 370.3
ACCESSION NO. 13 0.3% 1 7.7% 1 1.0 0.0
ISSN 1 0.0% 0 0.0% 1,620 1620.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 133 3.5% 26 19.5% 7 47.0 180.2
EXACT PE 30 0.8% 4 13.3% 4 40.0 88.6
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 162 4.3% 25 15.4% 8 1993.9 20426.1
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 417 12.6% 104 24.9% 6 81.1 380.6
Single 2,901 87.4% 633 21.8% 37 5269.7 101199
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 5 100% 4 80.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.1%
SHORT 80.2%
LONG 1.7%
TAGS 1.7%
FIELDS 5.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.5%
Ten most frequent errors:
1. First word of command is invalid 42.0%
2. NS command - no next screen 22.2%
3. FIND command with invalid index name 9.4%
4. PS command - no previous screen 3.3%
5. DATE search with unrecognized word 3.1%
6. DISPLAY command contains invalid word 3.1%
7. DISPLAY command - no FIND results 2.5%
8. Search term missing from search command 1.5%
9. 1281 1.3%
10. DISPLAY command-record numbers too large 1.0%
11. All others 10.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.5%
2. COMMANDS 9.0%
3. FIND 9.0%
4. LOCATE (BIO DB) 9.0%
5. BIOSIS DATABASE 7.9%
6. Unrecognized term 6.7%
7. INDEXES 5.6%
8. LIMIT 2.2%
9. BIOSIS BACKFILES 2.2%
10. B800 2.2%
11. All others 23.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.7%
2. First word of command is invalid 17.2%
3. FIND command with invalid index name 14.6%
4. DISPLAY command-first of >1 screen 7.1%
5. FIND command with zero results 6.1%
6. DISPLAY command - middle of >1 screen 4.0%
7. DISPLAY command - last of >1 screen 4.0%
8. FIND command retrieves >1 book 3.0%
9. 117 2.0%
10. 268 2.0%
11. All others 18.2%
Ten most frequent SHOW requests:
1. HISTORY 77.8%
2. SETTINGS 11.1%
3. SEARCH 7.4%
4. BIOSIS NEWS 3.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)