MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/01/01 through 06/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 237 1,091 1,328
Davis 748 22 770
Irvine 155 0 155
Los Angeles 2 246 248
Riverside 43 133 176
San Diego 43 189 232
San Francisco 159 0 159
Santa Barbara 7 100 107
Santa Cruz 18 122 140
Lawrence Berkeley 0 15 15
Lawrence Livermore 0 52 52
Los Alamos 0 0 0
Other - UC 0 74 74
Other-Network UC n/a 1,477 1,477
_______ ______ _____
1,412 3,521 4,933
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 4,335 13,175 129,890
BIO88 598 1,436 8,406
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 61 231 2,154
2-4 a.m. 40 179 1,496
4-6 a.m. 68 179 821
6-8 a.m. 142 411 3,856
8-10 a.m. 511 1,496 11,371
10-12 a.m. 1,040 2,858 26,276
12-2 p.m. 865 2,687 31,841
2-4 p.m. 968 3,079 23,339
4-6 p.m. 706 1,920 19,621
6-8 p.m. 233 671 6,950
8-10 p.m. 160 526 5,443
10-12 p.m. 139 374 5,128
__________ __________ __________ _________________
Total: 4,933 14,611 138,296
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 767 3,249 4,016
Davis 3,201 46 3,247
Irvine 397 0 397
Los Angeles 10 695 705
Riverside 101 341 442
San Diego 227 525 752
San Francisco 578 0 578
Santa Barbara 12 292 304
Santa Cruz 23 391 414
Lawrence Berkeley 0 14 14
Lawrence Livermore 0 135 135
Los Alamos 0 0 0
Other - UC 0 216 216
Other-Network UC n/a 3,391 3,391
_______ ______ _____
5,316 9,295 14,611
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,308 33,962 44,270
Davis 31,977 281 32,258
Irvine 5,145 0 5,145
Los Angeles 267 7,157 7,424
Riverside 699 2,789 3,488
San Diego 616 5,821 6,437
San Francisco 6,135 0 6,135
Santa Barbara 112 2,617 2,729
Santa Cruz 132 3,177 3,309
Lawrence Berkeley 0 99 99
Lawrence Livermore 0 1,230 1,230
Los Alamos 0 0 0
Other - UC 0 1,906 1,906
Other-Network UC n/a 23,866 23,866
_______ ______ _____
55,391 82,905 138,296
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 7.0
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) 9:42
Average session length (minutes:seconds) 14:00
Longest session recorded (minutes:seconds) 613:03
Average number of searches completed per session 2.9
Retrievals per search - median 11.0
Retrievals per search - average 2021.1
Retrievals per search - standard deviation 13843
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 1.8%
Percent of long searches completed
(includes partial results) 65.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,378 29.3%
DISPLAY (excluding automatic displays) 16,271 38.5%
BROWSE 5 0.0%
HELP 263 0.6%
EXPLAIN 277 0.7%
SET/RESET 2,509 5.9%
SHOW 153 0.4%
ADD ON (AND, OR, AND NOT) 2,233 5.3%
LOGON or LOGOFF 5,307 12.5%
COMMENT 0 0.0%
SAVE 1,480 3.5%
USE 19 0.0%
OTHER 1,406 3.3%
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 5,051 36.8% 1,026 20.3% 22 159.7 1309.4
TITLE WORD 2,247 16.3% 983 43.7% 8 857.5 7150.6
EXACT TITLE 56 0.4% 36 64.3% 2 15.1 47.8
KEYWORD 4,497 32.7% 835 18.6% 30 2245.2 16474.3
JOURNAL 540 3.9% 234 43.3% 260 9896.1 35330.2
EXACT JOURNAL 189 1.4% 86 45.5% 211 2170.9 6807.1
SOURCE 7 0.1% 5 71.4% 61 60.5 62.9
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 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 1 0.0% 0 0.0% 49 49.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 2 0.0% 0 0.0% 18 17.5 20.5
PUBLICATION TYPE 2 0.0% 1 50.0% 1,583 1583.0 0.0
DATE 50 0.4% 12 24.0% 3 30.4 108.8
LANGUAGE 3 0.0% 0 0.0% 76 111.3 125.8
ADDED 7 0.1% 3 42.9% 28 28.3 5.9
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 70 0.5% 9 12.9% 57 1469.5 4796.0
ACCESSION NO. 3 0.0% 3 100% 0 0.0 0.0
ISSN 3 0.0% 2 66.7% 923 923.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 552 4.0% 90 16.3% 4 58.1 600.7
EXACT PE 115 0.8% 6 5.2% 4 40.1 152.9
RPE 1 0.0% 0 0.0% 2 2.0 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 344 2.5% 69 20.1% 14 380.7 1874.4
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 1,404 11.4% 475 33.8% 5 131.5 1567.1
Single 10,859 88.6% 2,428 22.4% 29 1564.0 13240.8
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% 2 40.0% 22 27.0 22.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 85.1%
LONG 1.7%
TAGS 0.5%
FIELDS 3.1%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.0%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.2%
Ten most frequent errors:
1. NS command - no next screen 37.8%
2. First word of command is invalid 27.8%
3. FIND command with invalid index name 8.4%
4. DISPLAY command contains invalid word 3.9%
5. PS command - no previous screen 2.7%
6. DATE search with unrecognized word 1.8%
7. Search term missing from search command 1.7%
8. Valid command at an inappropriate time 1.7%
9. Max. # of ports to a Z39 db are in use 1.4%
10. Index invalid in current database 1.2%
11. All others 11.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 16.6%
2. FIND 12.6%
3. INDEXES 11.9%
4. LOCATE (BIO DB) 9.0%
5. BIOSIS DATABASE 8.3%
6. COMMANDS 6.1%
7. Unrecognized term 4.3%
8. ADDON SEARCH 2.9%
9. DISPLAY 2.2%
10. DATABASES 2.2%
11. All others 23.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.3%
2. First word of command is invalid 11.7%
3. FIND command with invalid index name 8.7%
4. DISPLAY command-first of >1 screen 7.0%
5. DISPLAY command - middle of >1 screen 5.0%
6. FIND command with zero results 4.3%
7. FIND command retrieves >1 book 3.9%
8. DISPLAY command - last of >1 screen 2.8%
9. DISPLAY command-complete in one screen 2.6%
10. NS command - no next screen 2.0%
11. All others 22.8%
Ten most frequent SHOW requests:
1. HISTORY 78.5%
2. BIOSIS NEWS 5.4%
3. SEARCH 5.4%
4. B902 4.3%
5. FIND DISPLAY 2.2%
6. MAIL STATUS 2.2%
7. STOPWORDS 1.1%
8. DISEASE INDEX 1.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)