MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/01/00 through 06/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 488 1,476 1,964
Davis 897 56 953
Irvine 185 0 185
Los Angeles 313 244 557
Riverside 130 196 326
San Diego 81 297 378
San Francisco 365 0 365
Santa Barbara 73 216 289
Santa Cruz 166 241 407
Lawrence Berkeley 0 71 71
Lawrence Livermore 0 52 52
Los Alamos 0 0 0
Other - UC 36 120 156
Other-Network UC n/a 1,925 1,925
_______ ______ _____
2,734 4,894 7,628
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 6,533 19,838 185,733
BIO88 1,095 2,370 14,470
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 82 316 2,883
2-4 a.m. 29 109 1,873
4-6 a.m. 50 168 1,534
6-8 a.m. 202 595 5,873
8-10 a.m. 788 2,105 20,299
10-12 a.m. 1,601 4,288 37,850
12-2 p.m. 1,318 3,723 31,052
2-4 p.m. 1,566 4,783 43,418
4-6 p.m. 1,170 3,369 29,678
6-8 p.m. 382 1,206 11,072
8-10 p.m. 266 902 8,505
10-12 p.m. 174 644 6,166
__________ __________ __________ _________________
Total: 7,628 22,208 200,203
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 1,705 4,567 6,272
Davis 2,846 143 2,989
Irvine 483 0 483
Los Angeles 698 776 1,474
Riverside 521 478 999
San Diego 247 843 1,090
San Francisco 1,224 0 1,224
Santa Barbara 321 1,018 1,339
Santa Cruz 709 708 1,417
Lawrence Berkeley 0 178 178
Lawrence Livermore 0 143 143
Los Alamos 0 0 0
Other - UC 50 268 318
Other-Network UC n/a 4,282 4,282
_______ ______ _____
8,804 13,404 22,208
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,751 49,014 64,765
Davis 26,967 1,636 28,603
Irvine 6,171 0 6,171
Los Angeles 5,341 7,547 12,888
Riverside 4,954 6,160 11,114
San Diego 1,447 6,520 7,967
San Francisco 7,819 0 7,819
Santa Barbara 2,579 11,127 13,706
Santa Cruz 3,574 9,239 12,813
Lawrence Berkeley 0 1,461 1,461
Lawrence Livermore 0 2,452 2,452
Los Alamos 0 0 0
Other - UC 811 2,451 3,262
Other-Network UC n/a 27,182 27,182
_______ ______ _____
75,414 124,789 200,203
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 8.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:37
Average session length (minutes:seconds) 13:42
Longest session recorded (minutes:seconds) 352:57
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 1042.9
Retrievals per search - standard deviation 12045
Percent of searches completed with 0 results 23.0%
Percent of searches entered that are long 1.6%
Percent of long searches completed
(includes partial results) 55.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 19,191 30.2%
DISPLAY (excluding automatic displays) 23,625 37.2%
BROWSE 0 0.0%
HELP 592 0.9%
EXPLAIN 696 1.1%
SET/RESET 3,954 6.2%
SHOW 139 0.2%
ADD ON (AND, OR, AND NOT) 3,017 4.7%
LOGON or LOGOFF 7,941 12.5%
COMMENT 1 0.0%
SAVE 2,217 3.5%
USE 6 0.0%
OTHER 2,166 3.4%
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 7,349 34.8% 1,396 19.0% 21 133.5 470.7
TITLE WORD 3,380 16.0% 1,282 37.9% 7 727.2 5605.3
EXACT TITLE 132 0.6% 69 52.3% 2 161.5 480.0
KEYWORD 7,525 35.7% 1,310 17.4% 32 2655.8 21333.1
JOURNAL 787 3.7% 347 44.1% 600 4547.9 12407.3
EXACT JOURNAL 310 1.5% 114 36.8% 1,504 4720.6 12308.4
SOURCE 24 0.1% 14 58.3% 197 262.6 340.5
CONFERENCE 2 0.0% 2 100% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 2 0.0% 1 50.0% 51 51.0 0.0
SUPERTAXA 5 0.0% 0 0.0% 11 11.8 7.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 5 0.0% 1 20.0% 7,204 100551 191503
PUBLICATION TYPE 5 0.0% 1 20.0% 10 12.3 13.4
DATE 102 0.5% 20 19.6% 5 27.9 56.2
LANGUAGE 11 0.1% 1 9.1% 44 344.2 602.2
ADDED 11 0.1% 1 9.1% 14 12.8 10.4
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 88 0.4% 15 17.0% 13 585.3 2084.9
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 4 0.0% 2 50.0% 244 244.0 12.7
ISBN 2 0.0% 0 0.0% 23 23.0 15.6
PERIODICAL 714 3.4% 155 21.7% 5 260.0 2374.1
EXACT PE 119 0.6% 11 9.2% 3 38.3 170.2
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 519 2.5% 105 20.2% 11 254.0 1359.1
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 1,993 10.5% 629 31.6% 5 63.9 471.3
Single 17,031 89.5% 3,556 20.9% 29 1654.4 15333.9
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 2.6%
SHORT 87.3%
LONG 1.5%
TAGS 0.2%
FIELDS 1.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 1.9%
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 37.7%
2. First word of command is invalid 28.3%
3. FIND command with invalid index name 9.0%
4. PS command - no previous screen 3.5%
5. DISPLAY command contains invalid word 3.1%
6. DATE search with unrecognized word 1.7%
7. NS of SHOW/EXP command-no next screen 1.6%
8. Search term missing from search command 1.6%
9. Valid command at an inappropriate time 1.5%
10. Index invalid in current database 1.4%
11. All others 10.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.4%
2. FIND 10.2%
3. LOCATE (BIO DB) 9.1%
4. INDEXES 8.5%
5. Unrecognized term 5.9%
6. COMMANDS 5.7%
7. BIOSIS DATABASE 4.7%
8. MAIL 3.3%
9. ADDON SEARCH 2.6%
10. DATABASES 2.0%
11. All others 24.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.7%
2. First word of command is invalid 14.8%
3. FIND command with invalid index name 8.2%
4. DISPLAY command-first of >1 screen 5.4%
5. DISPLAY command - middle of >1 screen 5.4%
6. FIND command retrieves >1 book 5.3%
7. FIND command with zero results 4.4%
8. DISPLAY command - last of >1 screen 3.0%
9. F/BR with index invalid in current DB 2.4%
10. PS command - no previous screen 2.3%
11. All others 21.2%
Ten most frequent SHOW requests:
1. HISTORY 51.5%
2. SEARCH 21.2%
3. MAIL STATUS 6.1%
4. BIOSIS NEWS 5.3%
5. GLOSSARY 4.5%
6. B902 3.8%
7. SETTINGS 1.5%
8. SYSTEM NEWS 1.5%
9. SUPERTAXA SETTING 0.8%
10. BIBLIOGRAPHIC SOFTWARE 0.8%
11. All others 3.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)