MELVYL ABI DATABASE TELNET STATISTICS
Time period: 05/01/99 through 05/31/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 152 993 1,145
Davis 371 14 385
Irvine 341 0 341
Los Angeles 59 523 582
Riverside 317 5 322
San Diego 42 113 155
San Francisco 92 0 92
Santa Barbara 158 51 209
Santa Cruz 248 68 316
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 6 63 69
Other-Network UC n/a 411 411
_______ ______ _____
1,786 2,248 4,034
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 56 245 5,244
2-4 a.m. 32 151 2,434
4-6 a.m. 29 88 1,229
6-8 a.m. 65 247 3,909
8-10 a.m. 325 1,022 13,516
10-12 a.m. 641 1,928 24,205
12-2 p.m. 702 2,350 31,180
2-4 p.m. 921 3,205 36,312
4-6 p.m. 588 2,124 24,931
6-8 p.m. 295 1,273 16,908
8-10 p.m. 223 827 12,668
10-12 p.m. 157 690 9,786
__________ __________ __________ _________________
Total: 4,034 14,150 182,322
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 459 3,863 4,322
Davis 1,097 23 1,120
Irvine 1,029 0 1,029
Los Angeles 173 2,174 2,347
Riverside 1,460 6 1,466
San Diego 107 349 456
San Francisco 336 0 336
Santa Barbara 475 141 616
Santa Cruz 802 256 1,058
Lawrence Berkeley 0 12 12
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 4 147 151
Other-Network UC n/a 1,235 1,235
_______ ______ _____
5,942 8,208 14,150
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,661 46,084 50,745
Davis 13,249 314 13,563
Irvine 14,064 0 14,064
Los Angeles 2,976 37,020 39,996
Riverside 16,718 47 16,765
San Diego 838 5,785 6,623
San Francisco 5,320 0 5,320
Santa Barbara 5,257 2,234 7,491
Santa Cruz 8,703 1,847 10,550
Lawrence Berkeley 0 278 278
Lawrence Livermore 0 153 153
Los Alamos 0 0 0
Other - UC 21 1,597 1,618
Other-Network UC n/a 15,156 15,156
_______ ______ _____
71,807 110,515 182,322
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 2.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 10:36
Average session length (minutes:seconds) 15:49
Longest session recorded (minutes:seconds) 243:59
Average number of searches completed per session 3.5
Retrievals per search - median 9.0
Retrievals per search - average 1309.5
Retrievals per search - standard deviation 9514.0
Percent of searches completed with 0 results 27.5%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 59.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,283 23.2%
DISPLAY (excluding automatic displays) 26,485 50.0%
BROWSE 91 0.2%
SELECT 14 0.0%
HELP 1,087 2.1%
EXPLAIN 999 1.9%
SET/RESET 1,566 3.0%
SHOW 265 0.5%
ADD ON (AND, OR, AND NOT) 1,864 3.5%
LOGON or LOGOFF 5,285 10.0%
COMMENT 0 0.0%
SAVE 1,478 2.8%
USE 28 0.1%
OTHER 1,660 3.1%
2.1 Article Text
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DISPLAY TEXT commands 3,007
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 299
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 2
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 2,445 17.9% 643 26.3% 11 67.4 220.5
TITLE WORD 2,200 16.1% 816 37.1% 9 91.5 663.8
EXACT TITLE 271 2.0% 99 36.5% 1 13.6 50.9
JOURNAL 727 5.3% 277 38.1% 660 3375.6 10068.0
EXACT JOURNAL 675 4.9% 185 27.4% 282 3007.7 7067.2
SUBJECT 1,638 12.0% 864 52.7% 448 6802.7 22994.1
EXACT SUBJECT 57 0.4% 27 47.4% 583 2128.9 3471.4
KEYWORD 4,123 30.1% 616 14.9% 73 2278.4 13616.3
PUB TYPE 66 0.5% 8 12.1% 64 1939.6 6635.3
DATE 622 4.5% 124 19.9% 29 184.2 676.6
ADDED 3 0.0% 0 0.0% 14,681 14681.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 1 100% 0 0.0 0.0
GEOGRAPHIC NAME 15 0.1% 0 0.0% 154 658.2 1171.5
SUBJ CATEGORY 38 0.3% 2 5.3% 106 17747.6 42580.7
COMPANY NAME 319 2.3% 88 27.6% 71 412.3 1140.8
EX COMPANY NAME 17 0.1% 5 29.4% 196 303.8 516.3
DUNS 10 0.1% 1 10.0% 71 94.9 92.7
TICKER SYMBOL 6 0.0% 3 50.0% 15 29.3 37.6
ID NUMBER 3 0.0% 0 0.0% 1 1.0 0.0
ISSN 23 0.2% 10 43.5% 554 574.2 433.1
PERIODICAL 188 1.4% 42 22.3% 7 376.1 3324.5
EXACT PE 84 0.6% 13 15.5% 4 15.4 36.8
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 2 0.0% 2 100% 0 0.0 0.0
Other indexes 151 1.1% 36 23.8% 32 2093.5 12869.4
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 1,434 11.8% 381 26.6% 19 358.2 4292.0
Single 10,716 88.2% 3,080 28.7% 43 2240.1 12619.6
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:
SUBJECT 90 98.9% 32 35.6% 5 11.0 17.2
EXACT SUBJECT 1 1.1% 0 0.0% 8 8.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 90.1%
LONG 1.0%
TAGS 0.0%
FIELDS 1.8%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 3.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.7%
Ten most frequent errors:
1. First word of command is invalid 34.8%
2. NS command - no next screen 26.2%
3. FIND command with invalid index name 8.7%
4. DISPLAY command contains invalid word 4.4%
5. PS command - no previous screen 4.2%
6. Valid command at an inappropriate time 2.8%
7. DISPLAY command-record numbers too large 1.5%
8. Search term missing from search command 1.5%
9. Add-on search, no index name after verb 1.4%
10. DISPLAY command - no FIND results 0.9%
11. All others 13.5%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 16.4%
2. LOCATE (ARTICLE DBS) 10.9%
3. FIND (ABI DB) 10.6%
4. INDEXES (ABI DB) 7.6%
5. COMMANDS (ABI/PSY DBS) 4.9%
6. Unrecognized term 4.8%
7. MAIL 4.5%
8. ADDON SEARCH 3.4%
9. PUBLICATION TYPES (ABI DB) 3.2%
10. ABI/INFORM DB 3.1%
11. All others 30.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.0%
2. First word of command is invalid 16.7%
3. FIND command with zero results 7.8%
4. DISPLAY command-first of >1 screen 7.8%
5. FIND command with invalid index name 7.7%
6. DISPLAY command - middle of >1 screen 5.1%
7. FIND command retrieves >1 book 4.5%
8. NS command - no next screen 3.3%
9. DISPLAY command-complete in one screen 3.1%
10. PS command - no previous screen 2.5%
11. All others 20.6%
Ten most frequent SHOW requests:
1. SEARCH 33.9%
2. HISTORY 32.2%
3. MAIL STATUS 19.7%
4. GLOSSARY 2.9%
5. MAIL SETTINGS 2.9%
6. SETTINGS (ABI DB) 2.1%
7. SYSTEM NEWS 1.7%
8. ABI NEWS 1.3%
9. EXPERIMENTS 1.3%
10. EXPERIMENT 58 1.3%
11. All others 0.8%