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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:0 e4 X7 _' M6 ?) a4 ^  W5 c
to do-business   G5 P5 J8 [: ^  Q: a: O
rt random 360
+ G) e7 C. [& T fd 19 u2 |. U6 T. {; N5 n' A1 S% g# F
ifelse(other turtles-here != nobody)[  W# O; p4 C4 A- j8 t4 U5 S
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
8 \* ~2 [) f# }  w8 l2 L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 n; u$ x2 j& V4 _" G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! z* J, M* F0 H3 c- @" V* B% {
   set [trade-record-one-len] of self length [trade-record-one] of self: k) k0 {2 Z, {  D( F2 i, i
   set trade-record-current( list (timer) (random money-upper-limit))# r1 R. ~! y- F1 W' i
9 ?1 p( F0 P2 x& \+ r
问题的提示如下:5 y0 e& O% ~5 u$ @

* [) ]- L0 T1 Q. x0 Aerror while turtle 50 running OF in procedure DO-BUSINESS
0 b8 N# [5 S7 U  called by procedure GO
/ Q7 ^; J8 G5 E, W/ g: D- J$ uOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ x8 m4 s  G7 v  r# c
(halted running of go)+ W0 m" p/ t6 j/ K. {

. n5 R& J1 O! @2 c' f这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
1 A! Y$ R' z' E8 @- @' ]2 B9 H另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
  z& E7 z7 O' g/ X, }5 Zglobals[& r5 e/ u- a  m% x
xmax/ R. s8 _+ ^9 d( O
ymax8 q) [1 ~  i3 m- o# s
global-reputation-list+ l; x5 N1 o# q
3 G. {2 F7 o* @6 r3 [
;;
每一个turtle的全局声誉都存在此LIST9 u' q8 X) t2 D8 O% f$ P
credibility-list6 I5 s" T: L* X6 \: {
;;
每一个turtle的评价可信度
- s5 H* i+ A; u  x* {& xhonest-service
% P  W, d3 Y) Y9 f) nunhonest-service
: K7 L* v/ |- Voscillation3 F; L$ i" v% T+ b8 [
rand-dynamic
$ M, E8 e6 H  i  c8 r0 E]
% o7 H7 a+ U0 F" ]  n' S  I: [& d7 z6 M$ r) }* |/ ^: X- _
turtles-own[" ?& o  T6 D2 z7 c
trade-record-all5 M3 Y1 S4 @) M
;;a list of lists,
trade-record-one组成1 L* i; d( K4 Q
trade-record-one
7 O  e; M; \2 |" ~  B+ B2 p* G+ O8 G;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ e& o! `$ z& `7 p% t; e5 {$ q' L* S$ H- _1 U& {
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]/ S- R3 L2 q' _5 k# U" a
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
7 U* L1 X$ }4 R; C, ucredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
  y) I4 L' }' N6 b* G2 w$ gneighbor-total# b. {& H. m1 G9 D
;;
记录该turtle的邻居节点的数目. P" ~  v& M: D# k9 Q! Y; @  V
trade-time: V9 d9 j; Z7 M% r4 o$ S
;;
当前发生交易的turtle的交易时间" |: g# z4 `- @4 G5 d
appraise-give
. [9 B; @+ d# {" d8 [;;
当前发生交易时给出的评价4 C+ z8 ~  p" U( ?7 X- C
appraise-receive% q4 Z3 Y* z) x5 T
;;
当前发生交易时收到的评价
# R! J$ x2 ?9 }appraise-time
5 Y2 [8 c: r( j1 c8 z;;
当前发生交易时的评价时间
' _' z: D( E, E; Wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉7 p! [; a& _% i1 {8 s5 S' u5 g- A
trade-times-total! _( e. n) C. E7 c0 W# u
;;
与当前turtle的交易总次数" ?. C3 N# c9 t" i/ w
trade-money-total, c0 n2 M3 ?+ [8 x; {/ N& r
;;
与当前turtle的交易总金额# k' O. W( D4 j+ E9 l: @: [
local-reputation' e; D+ i! u1 q6 d8 K; B
global-reputation& Z# ?/ g4 q4 Q. k- f
credibility
  r# u2 E! i/ N5 X7 X;;
评价可信度,每次交易后都需要更新
8 T2 V. e9 u! K6 N8 Wcredibility-all8 y6 ]$ \! v4 `) T# n. H# m8 s7 W
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
# @8 Q9 ~6 T& W" E+ c
( l( }! Y9 c, j( J' W% n( g;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
7 B9 i7 a& u' G  Icredibility-one
7 c9 h$ J4 ?8 j% l+ W* z;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
0 x; U! X% O$ D4 f# w0 @8 \+ Hglobal-proportion- t6 |2 H- u) B9 u& f  I
customer
/ A4 d* z! N2 pcustomer-no) G8 \2 @- F8 l; B
trust-ok
9 C5 a0 [  U" k6 t$ m2 ~trade-record-one-len;;trade-record-one的长度
6 q5 |. E+ m! C; C% |- p]6 @9 _! z: x4 Y1 {: a* x5 U; w2 F  `

) y, j3 g7 ^. A" Z5 f  ?;;setup procedure
( C1 E7 v$ B# I. C8 @  Z% p0 D  w$ f/ z# l) `* v: N
to setup6 \- D5 }$ _* |/ }  H7 ^
* w1 l) Y1 A! \
ca

% d* O4 x* j7 ^" o8 ?
4 s- m5 E: L8 Qinitialize-settings
' o1 E  }) Z( V, p2 _

+ K# B: x4 v( Ocrt people [setup-turtles]
, A* S) I1 v/ Z

# ^1 e# e4 ], @! n* ?  Jreset-timer
: g5 d# b- Y  F7 H8 ~
; M; g4 v7 r( u# b, `) l
poll-class

0 t; `6 ^. W' G7 S1 u* H# I$ k" u3 s3 J; B6 Q; g
setup-plots
# \2 O( {3 [+ s5 ^. J9 i
4 U/ n. F- `7 v" S: h- ~6 V' ?/ R0 g
do-plots

; Y# U& v/ E  O: a+ w+ e/ Oend
5 F9 O1 z  k& h: \7 c* R( x) |6 `8 b. h' y$ G( b
to initialize-settings
% T) e2 z4 r, v, i- o& K
9 Y# d* Y2 g5 Z0 i5 Lset global-reputation-list []

' _6 t& d6 N* I, X1 n0 l6 z
2 @# B: L, K4 j1 }% Oset credibility-list n-values people [0.5]

, \  w  B: b) x! ?% _2 ~. [
4 G! ~" H% A) d0 m" t6 C& y& F8 jset honest-service 0
- _  f& Y% i, C3 t; i0 J6 b* p9 a
6 f. t' N  G( Q6 M! e  Q7 p
set unhonest-service 0
7 \& Z/ q! j0 c% \- h! W

' r7 w/ d) p3 ]* ^8 j5 Wset oscillation 0
* O& V; M8 L& w* M$ k) S
% v2 t5 o2 o- n' ?8 w1 u& x4 r
set rand-dynamic 0

8 f, ?' s6 P& ]; d& Qend8 {7 P. W. T  C+ c

4 w2 [) {" H: t! z9 X; L1 qto setup-turtles
( A5 n* B4 R3 a" k0 B' v5 C: uset shape "person"' ]0 }5 h  v+ q  z5 [
setxy random-xcor random-ycor
( M9 g4 q- s& |- O+ yset trade-record-one []' f6 y4 }/ v- \' d9 b& ~" M, O5 a" U

9 t. H; A+ i- X$ P- @# Hset trade-record-all n-values people [(list (? + 1) 0 0)] - h6 s6 S0 k1 n4 n
$ k$ i8 j" }/ k. L
set trade-record-current []
7 M0 H6 j  Z4 j/ F0 Z1 u, qset credibility-receive []
  n2 G" T# H8 U  k1 c7 A; kset local-reputation 0.5
, h" Y& z1 {5 |8 c' sset neighbor-total 03 Q9 f2 j0 w! u# j4 _+ q& i
set trade-times-total 0
6 ?% [4 U9 ^7 L& V" @set trade-money-total 0
0 u4 c4 ^! F; {. bset customer nobody
: C- W' }6 H( oset credibility-all n-values people [creat-credibility]
6 r" n+ }' s& T" I  ^/ U  ~set credibility n-values people [-1]
; _" C: S# J: N, W2 G6 k0 ~get-color
3 V$ f% V4 ]% V+ V  q

3 A. S/ S# p; D+ }3 ]4 [( Lend" s8 t( b& O4 e% P
, ]  \, z- c- i- n
to-report creat-credibility8 q9 t- _3 s& e8 |) C+ n2 o
report n-values people [0.5]
$ M! X/ W5 K7 K+ R6 A5 R7 ?/ Lend
, r: y2 n# }" n- z+ T
% U# ]/ a& o- y2 G8 r7 v: \+ Eto setup-plots& ~# k2 l, u6 X: M7 o& P9 Q
9 V7 i$ M0 V1 g/ K- H
set xmax 30

/ B6 D  A4 a) Z1 u: e
8 K$ p2 ]5 o0 b' a$ H" E$ ^, Wset ymax 1.0
8 F) }; k) j3 D8 Y7 U' Q
- s- r; x* J1 s$ y0 n- {: t  g
clear-all-plots
2 n4 x  D  l2 D% L

5 Q/ t, o# M5 O' k& {$ isetup-plot1

7 a8 h) r7 d9 G- C( p& W& \1 \9 Q, O& v7 I" n' |
setup-plot2

3 i8 P% p6 s$ ]3 U
1 x8 l6 B5 p# |2 ~: W+ a2 C8 lsetup-plot3

4 c" G, `; c! E8 Send
; f& l- h) ]* ^6 t8 R3 }3 f" X/ j7 n
$ Z9 P8 O" P# u8 h+ I;;run time procedures
! h; ^! _: x- W" w5 J) b! K/ [9 Q; y# w8 ~0 |, s3 |" ]7 T+ h
to go) c& S' H. A) P, u9 W2 r
8 @% I" V1 I5 j7 {
ask turtles [do-business]

) h& Q9 r: L3 j- T1 d% tend9 _3 _4 M  T1 X; ^9 v6 b6 ]
. X, Z3 O- U" j; S
to do-business
2 q# C# y8 {9 g% t+ d
* F8 a, h- m, k) j$ _5 u- |7 A

# ~4 W( [0 I. art random 360

% G2 m9 O* ?" {& m: `% N0 W3 R; V
; _' P5 z+ T! S3 a! A. wfd 1

! f7 ]$ V; `6 C% ?+ f* ~0 b* P- e' s& \
ifelse(other turtles-here != nobody)[
0 w# K" H5 s" W# l, H, B) j* ]2 E5 Q2 `

, X+ e+ J) @9 i# d# Oset customer one-of other turtles-here
2 ^7 a; `( b; V! f# r1 j1 N1 d1 b

# S& g/ P+ ^" ];; set [customer] of customer myself
( s/ _, L9 N/ ?. M/ w

1 y! c+ P; l/ u8 y# Q) Vset [trade-record-one] of self item (([who] of customer) - 1)% q$ o& t6 O( [0 u
[trade-record-all]of self2 ?, ^) n6 _& v4 q7 Y" v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( H1 R+ J- G% d- y' Z$ |7 L: w+ Z9 L+ X: z' U# D
set [trade-record-one] of customer item (([who] of self) - 1)
* S" z  R7 X( F: i[trade-record-all]of customer
; r' }' k& |( [( i, A

& \$ q9 i8 D9 [' b% j9 O! L0 Cset [trade-record-one-len] of self length [trade-record-one] of self
8 ]  {/ y( H) K% q
! }; Y) S6 S) V9 G
set trade-record-current( list (timer) (random money-upper-limit))

' Q  b: W2 U* V+ N7 F- u: J; i! \# t; ~1 |9 }/ o' r2 H
ask self [do-trust]6 ], W% a; o7 S$ L0 Q% |' k$ x
;;
先求ij的信任度; _( X# y7 ]) v$ K. K

6 o) t" |) N1 j/ P4 n- Q" mif ([trust-ok] of self)
3 U+ Z: T* A4 N5 o' W;;
根据ij的信任度来决定是否与j进行交易[7 w6 x% H) h- }" P2 Q1 l: h+ {" s1 ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- V1 o4 C: M# d; h( B' R! i# ]/ x- e  s0 c# f: n. X) N! C
[

4 H  o/ A) F: V* B
* t& z* `4 ?% P) X% t/ N8 i6 Ydo-trade

9 J$ J* i$ w; P  f3 z/ o, q# A2 ]7 j
update-credibility-ijl
7 p) I& y5 p; c1 o9 W
9 R+ S" Q3 J: F3 |- Z7 {6 r- i
update-credibility-list
# n5 Z4 h9 K1 Z( X
' L) O3 Y. c3 o) Q
/ r8 @3 b5 f1 `: z5 j3 b: k& M# A
update-global-reputation-list
. s4 I0 Z! \' p( a4 m1 ^8 {

6 p9 g" \! M3 p0 kpoll-class
% ^" _; z6 W7 u) R7 W- w6 W

/ m' O0 q6 ^8 X9 {% uget-color
. d+ U" H* T$ z; m4 r9 D
$ g& C! S( s3 j, R2 y( G! J5 y
]]+ P- b, ]1 g$ `
: V4 t. V6 W! ^3 @1 U: L9 L4 j
;;
如果所得的信任度满足条件,则进行交易
% K& M8 B+ Q9 I' J4 z( [' r2 S+ k7 j1 L( l# X- `2 J
[

+ l1 ^/ x, x& M$ D% [
* c, R9 R# r+ Z# q$ Urt random 360

6 d' H* z9 {( C/ a
6 x$ X9 u. b8 s0 mfd 1

5 a& j% P8 p, }8 |: g6 H9 {: z/ H& S$ _8 l  R4 S' [
]

7 T( |) |4 H7 [: N: M8 L6 m) Q: a/ f% z' N7 o- l
end
- X; x+ _4 t& {7 L
4 m* T- r- O: G' z+ G! H' ?( h5 {
to do-trust
6 e( b9 p: s: Aset trust-ok False
& |, V- I" i! n3 [) `: o
8 X8 ?' A  a% Q: ~) U

: g. b& L0 z) j7 D+ _7 alet max-trade-times 0
( K& b: m7 ~  e0 Z2 ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; C8 v, V6 C- l5 T5 V. T! A8 o1 P' d
let max-trade-money 0
" y1 R( [4 o. V, y8 y" tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 L0 d2 ]2 v' m; a% z5 j+ {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; @0 Z) W* {$ h2 m. x) K8 l; O( ^8 Y6 d
( ~: V9 }, Q4 ~' V" S; t" N
get-global-proportion$ P# Q! g1 ^. V- \7 b9 U3 O0 W
let trust-value- h7 [7 t) f# p+ l; r% r
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, a2 Y" P  Z" o$ y% y! k# ~8 j
if(trust-value > trade-trust-value)& C8 \; S( W- l' L
[set trust-ok true]: R. y  L& n( t$ p, R
end7 u! r1 R. \* K. g

* A( B# S5 F% e4 z  I& Sto get-global-proportion
2 s  o  O, m6 G' O0 |ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 S  h# ?5 e* `: h( X1 N[set global-proportion 0]  L, o' C$ T* H- t7 r5 I! H
[let i 0
8 X4 v& I$ _4 t. dlet sum-money 06 y6 @, i& H9 J) {
while[ i < people]5 L1 @; p0 {# R
[
0 ^$ j; o' \# T, w0 T# w8 ^if( length (item i
. l- x) H9 Z; P8 o0 w) ][trade-record-all] of customer) > 3 )

) s/ m8 r& M+ _  Q9 N% e8 q[
1 B- ]# C0 S5 A2 s6 d2 G5 G/ vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 H8 l$ m2 Z5 q$ o: t  h2 k
]
& V9 T  t! C/ b% N6 T. l]
) g# p, U0 Z7 D$ \9 F3 W0 r! Klet j 0
. q/ f% d/ Z  {  vlet note 0
1 S  q1 t' q  T6 O; f. f. Q! Hwhile[ j < people]
8 f' q/ T! U$ h8 W# D[4 n: f: I2 v$ C0 |+ i. D3 p6 a
if( length (item i
/ A- P. p# R" L3 z" e" H! ?. {7 f[trade-record-all] of customer) > 3 )

, y2 \5 b  h6 I4 o* t[
% I* i9 F; I; j: Fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 A, _  E, z& V  C, k8 ?% ]! c[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 B/ q' e" @( B* a  N
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  j* L" L- B$ d5 ^
]
; s  o! q8 s3 R. ]4 g  L# P' f7 q], D6 J# k. t# u$ @" X
set global-proportion note
/ \! h( ^5 v, r$ E9 h7 U]1 A+ M* S: u: A1 W
end$ c. z0 {/ `: h2 W" s, R# O3 s
# Q2 `4 ]2 R  M1 K. A/ ?0 M
to do-trade
, ?6 `7 t5 E' \2 R8 n' D;;
这个过程实际上是给双方作出评价的过程
0 T% G* |; e' U3 g) I& gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# j# n2 ]! h2 Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 D5 }5 X6 s5 U, h. }
set trade-record-current lput(timer) trade-record-current
+ o) z/ z. V6 [8 d. b;;
评价时间
- R; b5 C8 Q8 Y. ]/ L9 a" P" {ask myself [
# B* B; a, H: p, J" pupdate-local-reputation" p9 o! O5 R9 w
set trade-record-current lput([local-reputation] of myself) trade-record-current* Q8 b" I4 a0 v+ f2 z
]! @* u- o3 O1 Y, s! [2 l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ Q1 ~% r0 T( |. E- x) {;;
将此次交易的记录加入到trade-record-one
7 J: H4 `9 e9 E* a4 y; qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* d3 U* R$ N2 j! s8 v# ]let note (item 2 trade-record-current )! V; m9 J& h6 N# y; I  _" @0 Y! c$ @
set trade-record-current) J+ r2 b) [! M) P( }5 v
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 F& X2 w+ {7 Nset trade-record-current
, r) N, e: ^( v(replace-item 3 trade-record-current note)
$ Y/ C" g+ L: L/ r/ V4 f* R8 k1 N3 h5 D  {: l3 w/ C

- R1 y" X2 W9 W# g2 ^2 hask customer [
! k6 E* j- T4 x/ r+ Aupdate-local-reputation/ M; a( d& w' z; y: C# p7 A/ J2 }
set trade-record-current6 R" ?/ O* W) F" G/ P' O! p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. `. d4 \) s5 r
]2 H4 S1 _! u. Z0 c, D# x

- y/ u$ {( G# F8 u* K
% Y, W. T5 h, k4 u: k1 [- L: I1 k
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 ~& d( ?7 C, s

. i4 k0 `/ G  a' E3 l: j( Z( Sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), J; E' ^9 e5 i- U6 V
;;
将此次交易的记录加入到customertrade-record-all
* R3 Y; J; M! z/ k1 a" k2 Lend
* ?* c: N. U3 V* B. {" r3 F  Q, @1 P( V6 V- @
to update-local-reputation; s; I' o3 G1 b
set [trade-record-one-len] of myself length [trade-record-one] of myself6 e+ c- V0 {0 g, L) Z2 `. a/ M

' i  m! j5 B9 t
( n/ A- h8 Q* P1 B; m;;if [trade-record-one-len] of myself > 3

% v# s, U7 d" S! Kupdate-neighbor-total5 A: z6 U5 p, F8 A5 O% Z8 Q
;;
更新邻居节点的数目,在此进行
8 v0 E3 z  P5 S" }0 glet i 3
/ y% T% U4 ?" t- M" N2 r" Wlet sum-time 0& b, D, r! }% B+ G: {
while[i < [trade-record-one-len] of myself]
9 K3 M! B% I9 }. {* Q[
" L3 o7 P1 v7 T9 vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 {7 A9 `2 I' I2 K7 T5 g2 t4 g, g
set i
1 x' m6 }  N: o( i + 1)

- U, a: }. e6 G# y8 g# T% z]4 s. }& V) L$ Z; Y; ~
let j 3
9 o) E( p  l/ n9 b6 @0 ?* d/ rlet sum-money 0
+ E2 x4 Z+ p+ d' N% E: uwhile[j < [trade-record-one-len] of myself]
- ~( B9 Z' g  @  ^5 l[
  a$ b8 p* S# ]( g* m2 c! ]set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
$ A( ^4 v3 ^( ]3 R+ [+ O# hset j9 {( g0 N5 p2 i  e8 |+ R
( j + 1)
) j+ |1 _+ E  J: W/ N8 N0 a
]
" [. ?# R: ]( b! vlet k 3
8 C# h9 f/ a/ s& S( llet power 08 I$ l( g9 H4 M
let local 0
- r+ t3 {5 m9 r8 bwhile [k <[trade-record-one-len] of myself]/ L4 p3 A, s! w# X3 Q& M: c" B
[1 c# ^7 }0 q: J  u: i9 @7 _
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
( _# |4 ~3 R1 B. U. Pset k (k + 1)7 J. Q- ]" F0 T' ^* h  p1 Z
]" \0 B* L; f, ]1 V
set [local-reputation] of myself (local)  N5 F  e4 a) c! Q: i
end& K" g2 M0 H) C8 r$ m+ C# ]9 v
6 R7 p4 v6 Q% ?& ?) I
to update-neighbor-total/ R$ I  ^8 }- j0 O
1 h7 F; Q8 }) m" A" \" k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ P- b5 |4 s0 z- b4 y  I% E& F7 _
8 V5 t: V) P# o# v

; g, J4 O' {7 d( o& c3 T/ Lend
6 m$ ?  V* z  C
8 n- P1 P$ G; s3 _/ p# F/ U$ E0 _to update-credibility-ijl
, F' @) G6 o- W4 P# l
* h) \2 ?: O( E: K7 g;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。$ j- E* N$ G% L
let l 08 H4 S; R4 P- e% S0 w
while[ l < people ]
; L/ d% c! U2 `8 b4 V# t;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价/ t, D# ~/ T0 }! O
[$ @. M# @" ?% L4 M% x
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) L- X- J3 Z% c# W" Eif (trade-record-one-j-l-len > 3)4 H) e! E: t  L, P0 k: T
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one6 ]6 c7 w/ M1 |1 h. S& g( D
let i 3
/ O) [9 u, K2 C0 jlet sum-time 0/ D. b8 I5 {1 @  ^( n7 W1 [
while[i < trade-record-one-len]) S; R+ `1 z% l7 O/ V2 y- h$ U
[( a; B3 ^, e1 P' Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 y" C* n% d8 {5 R$ e& lset i
. t# A3 Z3 I3 I+ X# M( i + 1)

; i$ x  X' k, P]
, h7 M0 A5 P* `8 P7 G. P. Wlet credibility-i-j-l 0" e, s1 X5 u4 K8 z* [+ R& a$ |1 ]5 Z
;;i
评价(jjl的评价)
- W: P4 S7 i8 Flet j 3' e( j; j1 ]. c8 A6 ^7 ~3 _- X& n
let k 46 {9 f) d. c; H. j+ n
while[j < trade-record-one-len]
2 _& i3 \1 z# ?6 G7 l% `[
$ a: d. ^# e3 b8 ^1 ]& u/ L! fwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉) T% r- f- d$ V, }
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
" d  C7 F9 [; p( |. ?  ?set j
  a5 h% `" ^- r! t# b5 M- }( j + 1)
- v# Y' f" {0 O0 z
]: f9 H# R! f! c; L; o$ o9 {: j2 b
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
+ |0 G: j3 z) X  Y1 c6 `  d) g# E9 D$ E6 K" z, m: F

' @  W; R- v5 E0 \- v5 ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 k8 n: W3 }. W" p+ }1 M2 r; D' v6 y
;;
及时更新il的评价质量的评价% }) `* R9 |2 t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; V, ?$ f$ F- |' b: kset l (l + 1)
1 E0 M$ S8 @3 Z0 Z* H4 _5 j% q]
: g- g. S# g  I) uend* Y( {9 o) _: k7 K) I2 l7 B( x0 Y

7 J) U, y: q( Jto update-credibility-list; e% I, F' n/ Y$ T
let i 0
0 G, ]; |, @  [, [. H! k& mwhile[i < people]
1 H, s' }  l( ]7 ]! h( W+ g[/ {. ], ^. Q% {& ^
let j 0
5 j0 A- X' I/ W! a) @6 zlet note 0  o* k: z3 L$ {  o
let k 0  C1 y; q  T; ]4 m! a% M4 s
;;
计作出过评价的邻居节点的数目( g9 y2 M7 q! w; s) I
while[j < people]
2 a3 ~) K# B  }$ r" [" B5 O[
. \; F1 r- x8 p  fif (item j( [credibility] of turtle (i + 1)) != -1)
/ ~, D5 K2 G( W;;
判断是否给本turtle的评价质量做出过评价的节点% G' r& v8 b' K# J
[set note (note + item j ([credibility]of turtle (i + 1)))
% Z+ T9 j$ W* d* @& [;;*(exp (-(people - 2)))/(people - 2))]
/ K8 O0 z6 K  Z  s9 X% c- V+ S
set k (k + 1)% d& F1 }9 z7 r8 O8 o& q" n
]9 }5 B* b" k5 j1 D, i1 q% o
set j (j + 1)
* o" V( E: U: K* ~]
/ C0 Z- f  V8 j' K& i. k% nset note (note *(exp (- (1 / k)))/ k)& x8 U- O% c2 n# t$ z
set credibility-list (replace-item i credibility-list note)
: R; X/ ^5 ]; P$ jset i (i + 1)( \# e+ b+ z# S' w9 h' u  g
]
( t1 X. d- N- i; Cend
$ Z4 d# K  B* O+ @6 ~
- y+ k$ T+ h$ [4 O- d5 xto update-global-reputation-list, X: `- ]; L) V( ]5 _& n! \
let j 0
/ [/ B+ K; ~4 f; Q# s# Xwhile[j < people]' \1 [1 r9 [9 z9 T5 b
[' B' I( C- a3 M4 @  j, L
let new 0
, j  x0 ?) y' i8 K$ u% R' q' D;;
暂存新的一个全局声誉$ N$ w. {9 m* c/ U
let i 02 x! W& M+ J' x8 q( m
let sum-money 0) ]* |8 |0 I3 q
let credibility-money 0
/ R5 b5 A9 a. Y$ u& W6 Nwhile [i < people]
+ m+ V2 o: o+ S9 K[
+ K) J/ T( O8 T" J; d" Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  H9 V0 G/ p0 j. r+ S0 O. o: g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% E5 e' y- e+ t  O; Q4 i, l2 @
set i (i + 1)
. N; H$ R* O1 w* }8 E* p]. ]. ~8 `2 e/ [# i, r3 \5 B
let k 0
+ b8 \/ {% s' ^; x1 L3 s6 K  E+ y$ Ulet new1 0, o$ y/ d& q( S: k
while [k < people]
' J$ ~+ f- @; f, |9 O1 |[/ m1 p6 G# B- Y" z) d5 K
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)- B6 }. i9 }; _/ `1 _& v$ S* p4 T
set k (k + 1)8 a, `! O* k) X
]' q: O# H" T( t
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 i' S' H# i% F/ Hset global-reputation-list (replace-item j global-reputation-list new)
3 H; e# D4 ^6 h; t: ?) R' sset j (j + 1)
/ p; b2 c; c; t9 X, z]& u8 M" U5 x# k. [/ P. ^6 S
end
) P  T( U9 \6 a5 e' I
. e7 j) s! p6 z2 `7 v
4 \9 E7 G0 U. a: K
$ U9 ]: Z+ z% w7 y+ `. K9 ~to get-color
3 b" \7 I/ ^2 L% L7 M' m% ^2 J6 Y4 d$ a6 n! I, _8 U( B
set color blue
  L- N" [& Q' a; d
end6 ~7 f% c8 S' B$ n
5 d3 `% X1 a4 |0 z& E# G& ?
to poll-class
+ P8 s% z3 B6 c2 W4 rend% i; f5 a; M- ]: j) q

6 y4 Y. |  G( u1 yto setup-plot1# a, C# G) p# d2 K  I! M& C! L2 J
# X* F! t$ z: L  [2 y
set-current-plot "Trends-of-Local-reputation"
! e) r1 `# x- g% A) o2 w

+ x8 `/ `7 ?8 r4 }9 uset-plot-x-range 0 xmax
4 u- t5 J% {. ]4 y, n8 d$ J0 v
: Q* q, B( N* v, e- a2 M9 H
set-plot-y-range 0.0 ymax

4 |" F3 p( @3 N  Cend" D/ f- k) a0 ?# s
0 ]8 E9 `" j0 @- I9 R
to setup-plot2
* k1 C0 R  [6 a, }; C4 m5 E' J: Q% c4 A- K9 i) [7 f
set-current-plot "Trends-of-global-reputation"

. f0 g% F: ^0 z1 e# e9 W
( e6 f9 ]( I4 H* F! i- kset-plot-x-range 0 xmax
  u2 |8 y0 E% }8 z

1 ^0 z- u& y" iset-plot-y-range 0.0 ymax
' N1 a. h5 u: b7 P3 T. X1 x
end
' I9 c6 j8 [: }$ @) m8 r0 W! B( E4 @" `  k* R! d# S8 I
to setup-plot39 W6 r  ~9 _9 ]: L8 t1 h

# P0 |- f) i- t4 }set-current-plot "Trends-of-credibility"

6 p4 S, p6 T' v# o; B
* z4 @; U3 y8 n# \2 Qset-plot-x-range 0 xmax

  `  o5 u& Y) F% L# b# w7 X) V. w; w
set-plot-y-range 0.0 ymax

8 Z" X3 b$ Y3 y8 v: m: _7 Rend* T+ }% _( C4 X' V. M9 b0 _
: @' u0 i" f" _0 l$ n
to do-plots9 D: c/ l. `  U& _, |; E
set-current-plot "Trends-of-Local-reputation"
" u' o1 Y2 p# i3 i9 v1 d5 C, iset-current-plot-pen "Honest service"
7 V. p; [8 D0 M( z2 E8 d  s3 Nend* o# _2 }# `' ]2 Q1 a* _7 _
! m2 z% j! d: q+ W! E
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.( H# V2 A! o* b' F6 I) z5 H: {
& H* a9 w: }$ x% B# j6 [$ V* g& n
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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