MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 11/17/01 through 11/23/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 66 235 301
Davis 108 12 120
Irvine 18 0 18
Los Angeles 0 31 31
Riverside 5 21 26
San Diego 7 51 58
San Francisco 19 0 19
Santa Barbara 3 8 11
Santa Cruz 0 20 20
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 208 208
_______ ______ _____
226 610 836
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 741 2,354 21,829
BIO88 95 195 2,308
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 19 445
2-4 a.m. 0 0 0
4-6 a.m. 9 15 65
6-8 a.m. 25 58 457
8-10 a.m. 87 248 1,423
10-12 a.m. 179 561 4,722
12-2 p.m. 142 401 3,303
2-4 p.m. 177 569 4,394
4-6 p.m. 124 377 6,596
6-8 p.m. 43 166 1,367
8-10 p.m. 16 46 290
10-12 p.m. 27 89 1,075
__________ __________ __________ _________________
Total: 836 2,549 24,137
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 220 770 990
Davis 418 21 439
Irvine 63 0 63
Los Angeles 0 119 119
Riverside 27 57 84
San Diego 40 152 192
San Francisco 101 0 101
Santa Barbara 4 31 35
Santa Cruz 0 57 57
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 0 33 33
Other-Network UC n/a 425 425
_______ ______ _____
873 1,676 2,549
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,971 11,237 13,208
Davis 2,485 47 2,532
Irvine 420 0 420
Los Angeles 0 936 936
Riverside 165 453 618
San Diego 56 1,656 1,712
San Francisco 351 0 351
Santa Barbara 9 152 161
Santa Cruz 0 433 433
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 107 107
Other-Network UC n/a 3,648 3,648
_______ ______ _____
5,457 18,680 24,137
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 3.5
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
_________________________________________
Median session length (minutes:seconds) 9:55
Average session length (minutes:seconds) 13:59
Longest session recorded (minutes:seconds) 313:38
Average number of searches completed per session 3.0
Retrievals per search - median 8.0
Retrievals per search - average 1167.4
Retrievals per search - standard deviation 13356
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 69.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,215 30.5%
DISPLAY (excluding automatic displays) 2,671 36.7%
BROWSE 0 0.0%
HELP 104 1.4%
EXPLAIN 110 1.5%
SET/RESET 413 5.7%
SHOW 9 0.1%
ADD ON (AND, OR, AND NOT) 334 4.6%
LOGON or LOGOFF 934 12.8%
COMMENT 0 0.0%
SAVE 263 3.6%
USE 4 0.1%
OTHER 214 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 732 30.5% 137 18.7% 19 90.1 318.5
TITLE WORD 353 14.7% 137 38.8% 9 694.4 4338.7
EXACT TITLE 36 1.5% 8 22.2% 1 7.5 25.5
KEYWORD 911 37.9% 193 21.2% 39 3178.7 24437.2
JOURNAL 118 4.9% 55 46.6% 1,483 5173.4 14111.7
EXACT JOURNAL 36 1.5% 16 44.4% 1,479 2435.8 2751.5
SOURCE 6 0.2% 5 83.3% 22 22.0 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 0 0.0% 0 0.0% 0 0.0 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 2 0.1% 0 0.0% 12 12.0 7.1
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 3 0.1% 1 33.3% 30 29.5 29.0
LANGUAGE 3 0.1% 0 0.0% 264 176.3 151.8
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. 4 0.2% 0 0.0% 8 14.3 17.5
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.1% 1 50.0% 933 933.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 123 5.1% 20 16.3% 5 174.6 1297.6
EXACT PE 23 1.0% 2 8.7% 2 64.0 273.2
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 50 2.1% 8 16.0% 6 182.3 751.2
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 189 8.6% 57 30.2% 5 108.7 501.7
Single 2,013 91.4% 467 23.2% 27 1850.3 17043.3
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 1.4%
SHORT 88.1%
LONG 1.4%
TAGS 0.1%
FIELDS 1.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.8%
COMMENTS 0.0%
Other 0.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. NS command - no next screen 31.9%
2. First word of command is invalid 28.8%
3. FIND command with invalid index name 15.4%
4. DISPLAY command contains invalid word 3.1%
5. Valid command at an inappropriate time 2.3%
6. PS command - no previous screen 2.3%
7. Search term missing from search command 2.3%
8. Max. # of ports to a Z39 db are in use 2.0%
9. Index invalid in current database 1.4%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 9.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 20.0%
2. GUIDE 12.7%
3. FIND 10.0%
4. COMMANDS 6.4%
5. ADDON SEARCH 6.4%
6. INDEXES 5.5%
7. Unrecognized term 5.5%
8. DATABASES 5.5%
9. BIOSIS DATABASE 4.5%
10. DISPLAY 2.7%
11. All others 20.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.5%
2. First word of command is invalid 11.2%
3. FIND command with invalid index name 11.2%
4. DISPLAY command-first of >1 screen 5.6%
5. DISPLAY command - last of >1 screen 5.6%
6. FIND command retrieves 1 book 5.1%
7. FIND command with zero results 4.7%
8. FIND command retrieves >1 book 4.7%
9. DISPLAY command - middle of >1 screen 3.7%
10. DISPLAY command-complete in one screen 3.3%
11. All others 23.4%
Ten most frequent SHOW requests:
1. HISTORY 62.5%
2. SEARCH 37.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)