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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:' l5 V! T" f4 R
to do-business 3 h/ Y$ p. ?3 L  K, a. n( J
rt random 360! _' N( |7 N8 P6 B
fd 14 d4 Y2 V. E/ w
ifelse(other turtles-here != nobody)[+ x6 n, v9 Z$ W2 V. ^* @
   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.
4 O" i  _' Q* k/ l/ i! D   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 u9 r; a# ~% e9 Q& Y. I' r# {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ s& m$ P* M1 b1 B6 P
   set [trade-record-one-len] of self length [trade-record-one] of self
2 _3 {& A; z* T( z4 X& X( K0 W   set trade-record-current( list (timer) (random money-upper-limit))2 o4 l! A: V. Z; V

( x, \" M+ M, K4 T7 `问题的提示如下:; e( B" B  R& T  ?: L! w
# N% i% u8 W+ n1 e: f% \: q
error while turtle 50 running OF in procedure DO-BUSINESS
. k! e3 j/ ?  h9 o) O! L  T  H  called by procedure GO
, M: V* r' h/ pOF expected input to be a turtle agentset or turtle but got NOBODY instead.) V0 h; R  \7 O+ p
(halted running of go)
" ^4 J9 b3 s8 r- z6 L: x
0 E1 {7 {0 I. w3 m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~~6 N+ E0 t0 [3 \' b" ]
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, x3 T0 \/ p& E3 D+ ?. ]
globals[' \6 D9 r7 z% R; [7 U. ]& g0 T
xmax
& N: y: I/ b$ \9 Y0 d* f3 T  symax$ a# Q. E0 r3 r3 [
global-reputation-list- d! v1 L4 ^" f7 i& \
% r! Y: ^# g+ L4 c$ t) n6 P- Q. Z2 w
;;
每一个turtle的全局声誉都存在此LIST8 k& D2 O  k7 L, G
credibility-list
+ `! X' t5 v6 K" y% U3 {6 a5 T! Q: h; N;;
每一个turtle的评价可信度7 K: [- Z- Z( }* ]  e
honest-service
/ ]1 N3 Y' X& O5 a% |* Dunhonest-service- f6 G: O4 M( H1 _
oscillation
; |: W0 `: ~, Q6 o0 a7 ]rand-dynamic5 ]" t0 m4 c0 O+ [9 N8 H+ N0 m
]
1 T( j. T! V4 q# T* r- `  G
, E( ^/ {' S1 V7 D& l6 S9 k( [turtles-own[
8 T% g) T6 D: F  A9 w4 d2 ktrade-record-all
& _: r' ~: T& j" o" K) F' R" E;;a list of lists,
trade-record-one组成
- g! k- n2 m& [4 @4 _trade-record-one
# m3 K7 l/ a7 O5 K5 c;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' r5 X5 W  c& x3 V! S+ K, f- @0 e: X
;;[
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]]  i1 \3 v( j! O  g9 S, L' ^0 ^) i
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]
4 H- U% V& K6 i+ Rcredibility-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
4 Q8 d8 I3 f1 r. o4 ^neighbor-total; u0 c; }: _! z/ N# B
;;
记录该turtle的邻居节点的数目2 q/ P+ R6 G: e! c: C9 K
trade-time
; x! q8 f* n- d2 `7 G+ f% m;;
当前发生交易的turtle的交易时间
1 V4 j* ]' S3 I& sappraise-give
6 k7 v+ X* p  M0 K, r;;
当前发生交易时给出的评价
$ d, e% n; q. X: m' Kappraise-receive1 L/ J) V8 q# L9 O+ ]
;;
当前发生交易时收到的评价
4 T+ Y5 P0 }9 s, Q- n9 I8 @3 Jappraise-time
$ {; z, r- e1 A1 L8 ~. R;;
当前发生交易时的评价时间
6 s2 u/ Y1 F( ^1 Y! W2 J' jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉4 R6 V! a' t% T7 f% h5 T; R
trade-times-total
# a( L8 t6 I1 J;;
与当前turtle的交易总次数! L: }- l9 z9 [
trade-money-total
& K' I9 Z& U/ W& j- J+ `8 X( j;;
与当前turtle的交易总金额
7 D$ A1 u. b. O- X# R1 rlocal-reputation! }8 |/ ?7 z( s5 a/ }  w* h! M3 f! X
global-reputation
6 n3 q+ [7 j; ~$ `" `9 P6 L+ R6 b6 y$ Lcredibility
& Q& j* F0 {8 C' c2 X;;
评价可信度,每次交易后都需要更新. B; ?8 y. _8 u8 _) F
credibility-all0 ^0 J$ ?) U4 `) D
;;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
3 q+ F4 {3 k8 w/ Q% c4 ]- O6 }
/ D& p" A* l% x' v9 E  I: a;;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) i( w6 I' }0 t9 c( I- ~. n
credibility-one( Y- d! g1 A% `
;;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
) Z  u" _# ^- o0 Y# eglobal-proportion9 C( x# K" `( W; F% }4 R' C" g3 l
customer. l% s  i, o9 Q6 l
customer-no7 d! {4 _1 X+ n( W
trust-ok
, A. h8 t$ }5 n" x; ~9 O6 E1 H  ntrade-record-one-len;;trade-record-one的长度# L" p: Q" b% g. ~, C$ U- |
]
6 J0 k& q( J5 Y1 |0 l
- h0 \# D, q5 H: K6 C;;setup procedure2 p' }* C% |3 M* k6 {
6 Q5 X( T$ y- a3 [
to setup
4 D5 u2 A; Q. \/ ?, c5 R* z* ?$ E
6 y+ S- r' R4 Fca
9 e) r7 e4 M# D1 }) M

  M/ H! G7 y0 Z/ B' hinitialize-settings

8 V. b. B, ~7 I
$ I" e; M( y/ @& O% V- Q. ^% {crt people [setup-turtles]

1 I2 ?/ D" r* ]& S- ^
% G) Q2 \1 X* d" I$ I  d7 hreset-timer

" Z& u; e1 B% f- k' A- ^# S$ w. G- s% |# L6 ]! `. n
poll-class
# T( K4 B: @8 X0 s1 ^
" k6 e' a6 F# [) ^0 y8 l5 r
setup-plots
7 {- C" Y# o+ _4 a

- r; P( {% h% y$ udo-plots
2 B" q( s5 |  c1 s0 b
end
( p$ X5 ]- U) O
% m; b; X) A9 H$ m2 M7 L" Kto initialize-settings& l" e& U! L9 Y0 X% S

& P2 i0 j, l" P7 [% S" U; ?$ L/ Kset global-reputation-list []

7 q2 U1 t* X4 x. @) K( Y
, b9 v% J" ?& x( L3 pset credibility-list n-values people [0.5]

. }* d' R* x% [! I, {! ^! t
# l/ ?! X6 e# c, Mset honest-service 0

8 d/ Y  H, D# H  q! @- S, \( o# a. k5 l- ~  U2 d- v1 |' {
set unhonest-service 0
1 P8 I% Z: `" h; \

4 P# F7 o% P. t+ oset oscillation 0

0 n* J" w9 ]3 q: p* u" I$ B
4 Y) n* ~8 p& }$ rset rand-dynamic 0

  V! I0 h4 [$ xend- w9 h- p/ o* t: o/ q. X7 w

3 F# s4 u+ O0 F' x1 L, J! Q$ Zto setup-turtles
- i$ V9 O% T3 J  iset shape "person"% |9 x; D1 j' f9 _$ I/ F
setxy random-xcor random-ycor
+ l1 k$ f- v8 N6 c  j5 hset trade-record-one []
9 c+ \+ A6 g, D& i! i  ]2 ]/ e
* b& q) L" _4 a7 o( ]
set trade-record-all n-values people [(list (? + 1) 0 0)] . g7 A2 ?2 n/ o" p& q2 m! \/ C
/ @( N! b6 q# B+ J! n
set trade-record-current []
1 g- \3 q' L$ y( @0 f/ u5 u* Oset credibility-receive []' g. d; h$ `& p% N
set local-reputation 0.5
6 A+ P4 k! F* L9 E, rset neighbor-total 0  G4 x2 i* |$ ]! P
set trade-times-total 0
' M' b! F# L2 Z+ F! k. Xset trade-money-total 0
& f% j- A) ?2 R* E: z# ?% ~set customer nobody0 q5 i: }$ Q+ _
set credibility-all n-values people [creat-credibility]' r( @0 Q5 I1 {7 `# V" E8 X
set credibility n-values people [-1]
0 z4 i! a8 {! t! I5 j+ cget-color7 v8 R2 j9 D- B! Q; e! {, T
0 F9 V5 v9 B  C2 h2 g. K- a8 d: S% T
end
, F' `: M: L) U2 j2 X4 B: x2 W' L& |1 T% e- [2 P
to-report creat-credibility
$ C- f0 i; Q7 P; M4 O3 Zreport n-values people [0.5]8 n5 s# K# B$ m
end
' B1 ^& i* P" _9 [* [7 e1 O: b% a3 v& R2 f
to setup-plots
% w" }+ e' C5 E' ~% @  n2 Y: w
set xmax 30

* K; E/ K# `. H: K5 _( g' H) f+ K  p" ?# ?4 {
set ymax 1.0

& u+ s1 Q; J$ p0 q" }- [8 `2 h) _; |8 R
clear-all-plots

# c! |0 ~' f$ N; W! y3 ~8 }* q* x8 p* f0 u8 ^' \% Y
setup-plot1
: z9 S5 x5 s4 n
' |# p4 j; V8 U% A& D
setup-plot2

/ r! `5 o3 ^$ o
& c2 j5 w' w2 D  T' g/ ]setup-plot3
& f5 x4 Q! ~/ P  h  s  \5 z2 I
end
' K) h4 R4 ?. k9 Z8 a0 r3 ?" }0 `. a2 ~1 {
;;run time procedures- ^6 M/ N0 G! h+ X6 a

6 _9 H  M; ]  `' D4 H' f' vto go
8 ~1 ?3 e, M" R+ _: }
& D/ w, ^: ]+ Vask turtles [do-business]

8 T4 K6 M  `# Wend
+ M, g5 A0 z& |5 Q" K6 Y* f! Z$ ~" B$ \8 h- _
to do-business # w2 M7 V' Z  s

0 R" C! Z0 z, Y9 X0 V( R
8 w+ [8 y' F$ w# ?rt random 360
; A- g; `1 I9 ?7 H' z9 E7 V

6 B; u( _9 M8 ~fd 1
7 R; X2 P/ u% v1 f) l, x
# F6 _: c  V/ @  [# R0 a! C
ifelse(other turtles-here != nobody)[

! z" g# k% W0 `6 o; j7 [! F, ]; v5 A/ h  B6 D5 @) I$ H
set customer one-of other turtles-here
" n3 x# v- T* a
, {2 x: |# M, w. \9 |' A
;; set [customer] of customer myself
6 H; ]/ F7 `/ B# l- h# H* K: k

( L, @# R0 Y/ K/ tset [trade-record-one] of self item (([who] of customer) - 1)! {3 J' Y8 `1 U( J0 Q1 b
[trade-record-all]of self
; Q; [+ ^5 Q) J* }. d. G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% W5 S7 a4 v  V0 C2 y

$ S+ T  i2 J! Z# f9 b* e& d# lset [trade-record-one] of customer item (([who] of self) - 1)1 t  B( ?" T% j3 @
[trade-record-all]of customer
# Q+ |: T# F5 i- x8 B: }5 e# A: N

. b8 o( V% I; c$ K! Mset [trade-record-one-len] of self length [trade-record-one] of self
1 i" _6 C5 z& `

/ f! H  H( A  P/ ^0 L6 c7 Rset trade-record-current( list (timer) (random money-upper-limit))

& l4 R/ X4 Y0 b7 Y, s8 J- d
/ B% c) x0 q, f: L: _- _4 G  gask self [do-trust]: V/ J9 E& U2 u5 b
;;
先求ij的信任度7 S1 |' j. J7 s2 t$ l
4 o. ?4 B. {8 R; e& w- N1 T
if ([trust-ok] of self)
4 X; \4 ^' w1 U- u6 I# g;;
根据ij的信任度来决定是否与j进行交易[0 N% ]7 I5 g; L0 u
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: s& ]& d7 W5 W7 X1 f
- t8 m, k$ R2 }9 Z% @
[
0 g2 R1 `# p9 K( k
* C" B, N7 |4 O6 B- J
do-trade
+ m6 s  K( H' s. _- X" t. [- F' E

1 x$ Q5 n! n# W) S3 t+ dupdate-credibility-ijl

. x: v/ A) V1 f4 y" I5 s
% o. d- v9 V( H! }2 T$ V( ?& U; Zupdate-credibility-list
0 _  J$ t+ z: E
' H- l3 n+ o5 j: i
4 W: E. M) F& q% v, j; Z2 S' g! Q/ }
update-global-reputation-list

8 h* j1 y  m. j! O0 j7 ^7 _# T0 {: V0 O: C( ]! l
poll-class

5 X# s+ o( u1 n! B  I
% N, e1 X& O* {0 n5 f9 Gget-color

2 m1 C1 L. C8 O; `( \) U
, q# y! A, @( |& {& c]]
8 z' n* C" X, m8 I9 l1 N6 q. z! z7 H! i
;;
如果所得的信任度满足条件,则进行交易8 f7 `  U! `/ Q# m$ c
3 g# b* c, h. x9 ~( m9 w
[
% Y* c3 {9 A" u7 c' z
! ?- O2 d* {! q2 {( R
rt random 360
& R8 r3 X# y' K7 d$ q

# w. @* ]% {% s; hfd 1
: i% v' E+ T! i# x  U) x9 _( W( o
; D4 m4 s; k* [1 U7 ~" _5 K3 }
]

  h$ I2 V8 P, ?& c9 A
6 r- z" P  R! B6 Oend

9 _# V6 E# E0 ~7 Z  f* S+ ^
9 b) B4 B" t- L+ {' i" D( c: eto do-trust
: s3 p- n9 S4 g! A% d! W* k7 u5 Zset trust-ok False
) W& f0 E7 D: `) J" C  e1 G8 m! e& Q! d8 ?6 \9 r! C3 v% I. J% N
% p5 {( \* V; J) |, v+ ^  `$ [
let max-trade-times 0% t8 ~; \6 f0 A$ o6 z0 m
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 b8 F: `5 p8 \let max-trade-money 0
4 C; _4 V! Q. W9 x  x/ yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! Q. N0 v- A( ^) k8 y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). i# ~2 F( y. I- \5 B

7 Z- E( s4 v0 u. d3 M
; X) J4 }+ {: r4 R
get-global-proportion
' n, n8 @: P0 e6 h* ?let trust-value3 ]5 g3 T; b1 ^, a, ^
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)

$ ]* W6 d  t, e) D) t$ j( Gif(trust-value > trade-trust-value)
* P) E& N' t* |0 L1 ]5 s. `( p9 I[set trust-ok true]
) b3 F: g9 s6 C; N; lend% s. F6 |/ W7 c

7 G/ Y! H1 M2 O3 ]- ]  {to get-global-proportion$ V) ]7 L) i8 w/ a: P$ i( V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 T0 z5 [6 d* Q$ M) G
[set global-proportion 0]. J0 v5 }' b# L5 e
[let i 0. H, U) T, ^* d  D! m8 z
let sum-money 04 P$ b: b; I9 Q3 ?7 j
while[ i < people]9 [5 B$ T: A% p; k
[
7 M9 n& N1 v! I! w( M( x: Yif( length (item i( D+ k4 y' X. C) _: l" s! q
[trade-record-all] of customer) > 3 )
/ b- H! a0 h- J, Y& {- m
[6 Z- D, P4 u' _( I
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 S8 t7 e; q6 B* x3 d1 A2 I0 K# ~]
1 D& }0 r7 L( V) ~]
' U. K- P0 e3 j) H- h/ s+ u. Rlet j 0. q9 H) x( C) E- `2 t& Y
let note 0
  s/ v  j$ g3 J9 V. Xwhile[ j < people]. _% H1 Q, }. }" }5 L
[
) i, l! p* [6 T4 t' z5 bif( length (item i( a4 J" _, n8 h" h) Y+ |; U' w
[trade-record-all] of customer) > 3 )

6 Z" Y- ]& }3 E! f/ v& z' {, Q[
7 O- Y/ r" c& [# O0 h7 aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), Q( o" S; }2 l3 P) d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" M; t+ b$ I' B5 E0 g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; ^& H/ B0 S  G2 [# U# d1 k]
) i3 I" b6 K) a* e: S, ]# []4 @' n' ]) u2 u7 I
set global-proportion note( g6 S' K' ?- w; C
]
$ z9 t( j) {  y, Q0 N; [3 t% dend
. q1 o0 V: t- ~0 L9 v. _: y
8 `' q$ _0 l6 K2 nto do-trade! T2 Q1 T# y, ]+ r$ I% c
;;
这个过程实际上是给双方作出评价的过程
  F8 ]! o& i7 O- n# \$ O/ n9 Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( D  C' Q8 a2 I  ~4 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  I2 x' R" f% |! ]4 o3 H% l2 `
set trade-record-current lput(timer) trade-record-current
- ~) f4 X1 o1 M2 C& ^' {/ x; D; }6 s;;
评价时间
: b1 [# a6 k" Z$ Cask myself [
* m' a( u8 w4 f6 T8 Lupdate-local-reputation
0 h$ ]0 K# K+ |! |! Hset trade-record-current lput([local-reputation] of myself) trade-record-current
* T6 v( u' Y6 f" n0 t" h, X]
3 B- x; r- u" x" Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 w9 M$ H0 q0 m$ r1 U! X- Y, n5 k;;
将此次交易的记录加入到trade-record-one* [9 X9 A! O& X8 \- C! e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" A9 H( S) O. v2 v* |1 H0 f1 V
let note (item 2 trade-record-current )! b" s' L- m# I" }8 ?0 q
set trade-record-current
2 H0 l' j" f9 \& Q9 F  a/ A# D9 _(replace-item 2 trade-record-current (item 3 trade-record-current))
* W; b9 a+ q2 W8 N+ w; R) U
set trade-record-current
% s: c4 O7 i* f% X9 }3 Q+ D' ?(replace-item 3 trade-record-current note)5 b  M. w. m  i+ s. f3 d

* K) k7 M9 H' r' Z; }$ _
  ^6 G. i4 N/ Q  F
ask customer [- z# B5 K7 {8 I8 H$ A& k7 S
update-local-reputation3 n  M; q4 ?4 I7 B7 Q
set trade-record-current
. o0 q4 D$ d) h+ I4 V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! A1 b5 h5 R) C/ P]
2 Z$ ]* w3 y: |! M0 T2 F; _
. {+ g  p( ~% l* R: Z# E$ a

3 B! C) B& _( }! }2 Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ U3 u- G2 l$ x8 Z4 B# ~# o

  c1 Q- L- h% r" a: [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% o+ t& h7 V* M" _2 d; H( P* m% w
;;
将此次交易的记录加入到customertrade-record-all1 \* v9 J% q- O9 J
end
$ u7 f2 O' ~* i1 ?8 X9 x: p' w
" B7 D8 f6 G3 j4 h+ Q3 wto update-local-reputation( O! w1 U& U! \. ^; s, o! |
set [trade-record-one-len] of myself length [trade-record-one] of myself& L* }2 R! y5 n# }: h( T

" _8 j& t4 w$ G+ m7 T+ E5 ?+ U3 P+ b5 i3 n
;;if [trade-record-one-len] of myself > 3

& F  n3 I( u! r5 L) N( dupdate-neighbor-total
& L1 Z  ^5 T9 o$ i$ `* @+ e;;
更新邻居节点的数目,在此进行
) v- {2 m0 f! E% I; o4 C) d  olet i 3- ^" u' n. z+ j4 G6 w6 x
let sum-time 0' x* Q; q  M3 L# {8 ~
while[i < [trade-record-one-len] of myself]
) z  [! ^5 \  T2 n/ [  w0 s& P[4 }; [. t& A+ y4 C; I" q0 q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 s6 I: ]2 R4 J" Lset i: K0 w5 h( G. y2 ]8 b
( i + 1)
# K5 Q2 z8 u( {" X, [
]
! H. z: @( Q$ t  L( ]. j- a- u+ llet j 3
# |5 [3 R& L  Elet sum-money 0
! i! L2 H- [: F; iwhile[j < [trade-record-one-len] of myself]2 ~2 ~/ X6 W$ A5 N  b
[
! i' B9 m0 e. b5 U% Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)3 B" A8 F4 p3 T
set j; D2 N8 C( e: A* e- G* l( H( j; D
( j + 1)

" L1 _" e2 C) H9 i# I5 [0 K2 F]0 M$ j/ H. I' `& `. a' s) S
let k 3
4 {# |+ W7 v0 wlet power 0$ o7 G  ~4 I4 v; ?& H+ z) I
let local 0
6 |% _0 [- B  X& n( i- iwhile [k <[trade-record-one-len] of myself]; ^: l+ y9 L0 V2 F; J7 D
[3 G% n$ D2 o, |$ X0 A
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)
% n* m( P0 n, O/ \+ Jset k (k + 1)! }( X! ~) N; t1 `. [1 O
]. \/ V4 u6 h$ S
set [local-reputation] of myself (local)" J# }' H% Q9 k( Y
end
( K0 X& Y( E  R% b" B% z$ E9 I. D$ x
to update-neighbor-total
# D) j1 E. c4 i9 C, o9 b- y0 M- L7 s8 ?9 N( x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% l7 j5 ]; B3 L* S8 R/ n8 f. P4 J- Q9 w

3 S6 X/ x& d9 z; ~/ J/ kend
( L3 Y1 R% N2 ~) m& X0 x  N$ d5 F
: w. [+ }7 V. k9 Cto update-credibility-ijl : ]; M! J/ X1 j+ d( n" [+ _

; L$ s  Q5 x/ B0 M( I;;
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。
, }' B% U# S% e* Flet l 0
( r3 t- Z8 x7 w6 |+ m; }while[ l < people ]% U+ b. x! t. t# U8 i
;;
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$ Q  V) b- p; C8 W8 j9 I7 U5 O
[- l$ i% N8 }. {5 ]. a% h5 r
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 w8 q3 X4 p8 ?if (trade-record-one-j-l-len > 3). I9 a, }" Z! o$ b, n
[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-one5 @8 |; }- @8 Y
let i 3
/ ?" C2 l4 W- }5 V2 t' d. G' _+ Slet sum-time 0. m1 Y. O- q9 m( d* R: `
while[i < trade-record-one-len]" \( x$ Q4 d7 X% U$ @
[$ n' _, U% z. p: V0 _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ w" ^8 n/ l% x) p+ C
set i" S1 R- C) H: h8 Q3 @4 F# B
( i + 1)

/ d- r/ N, ?/ k1 q]
0 }4 ?; H- M) x) |3 N) Flet credibility-i-j-l 0
2 G8 R" N8 s( O! G3 M;;i
评价(jjl的评价)
& y- h+ z! Z7 x1 J7 u9 Ulet j 3
. ~6 b$ U( {. n8 K! Dlet k 44 ~2 g* E! W! i) Z
while[j < trade-record-one-len]6 c! k, M  r. q0 ^$ Q0 s
[- D& g# S7 ]. S* `3 G/ [, J9 z
while [((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1 W9 @/ G9 F4 m; y2 n5 B
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)3 A  t9 W5 `) z$ E: }
set j4 b" p/ v1 F1 U4 R7 w- n
( j + 1)
8 p2 W9 m( r3 Q  y
]# p/ @) J, a/ 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 ))
; v8 g  r4 G% S7 n
9 a8 Z% c  Y1 Q1 w* p+ a% h

% O% q5 R- X- @. c5 s. @) V* elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. y0 h5 U* {0 V5 k" C) _/ p9 z5 V+ ];;
及时更新il的评价质量的评价
+ T* n* {  ^# {( T" f8 T: hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ I. }! c* u* L- `- x
set l (l + 1)) Z( M+ F. d; }& x
]
& I! G3 y. j8 ^/ e; y" C# M1 Aend
2 T9 k5 D% [; M% X9 l
* b* W* H" n- i3 [" B) G2 xto update-credibility-list7 D! h) |9 j4 Y& y
let i 0- _( r' A* H* S0 i* F, L9 [
while[i < people]
/ [  i$ N8 i/ I1 O[0 P3 Q! U; j1 ~# a& K0 `
let j 08 x. T1 K0 C7 n1 s
let note 0( P6 a9 a+ v7 B% g; B8 X
let k 0
9 {" O8 c( {  t5 v;;
计作出过评价的邻居节点的数目
& m. d+ w6 G; y( @while[j < people]7 M  W+ n! F# i; f/ z; K
[- U* F) j4 ~8 W: v
if (item j( [credibility] of turtle (i + 1)) != -1)
4 o8 t8 c; O+ y& r, @2 T/ D- x;;
判断是否给本turtle的评价质量做出过评价的节点% X& h3 p% v% s# e5 z9 ]
[set note (note + item j ([credibility]of turtle (i + 1)))
( ^5 X: ~% E* k, K: w1 D8 \+ F;;*(exp (-(people - 2)))/(people - 2))]

+ B: I. [2 S3 c! t; gset k (k + 1)
( U+ f% ]8 _" W8 J; X5 F]
6 i/ S) ^3 P+ G+ j+ d3 ^set j (j + 1)# m, G* E$ i+ j. L1 I
]( t  G5 j0 d; b
set note (note *(exp (- (1 / k)))/ k)  a0 }. h8 U  ?' D
set credibility-list (replace-item i credibility-list note)
% K+ n1 j& T1 F7 y: cset i (i + 1)
) k3 X. M/ W4 X5 i' P0 R% _% B. t]
7 L7 ^4 {6 a9 P' R% F$ [end" S& W! R+ [6 b
  M7 P- y+ ?: I  Q2 Z. L' g& T) {
to update-global-reputation-list: w  t+ ^) B: I/ I
let j 0
7 }  q& @4 `, s' awhile[j < people]$ ]2 L# Y6 w! c8 s. S
[  K) v+ Q7 p# K: O2 \
let new 0' y+ m# A; \1 r# b
;;
暂存新的一个全局声誉
' e9 u& D* m# X- Z. Jlet i 0
5 `- |- i2 w+ \% o6 C) S( Zlet sum-money 0
  y; s. |8 k5 d* ^  ?let credibility-money 0
3 Z0 t% F  }; i6 h( x  x+ Owhile [i < people]" Z! r6 T% ^& _* j1 k' S, i! ^
[
& i( D4 B+ p: k; i% cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 ?4 u! A# T5 [; j. W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); Y, \1 i% j5 B/ U0 H0 X+ w
set i (i + 1); m& u$ K( d3 d2 k( j0 @$ H
]; }% a' [$ X7 w' g0 E  {
let k 0: L7 L1 K( V: B0 N' r
let new1 0: G9 Q" n" X6 `& E2 x! g
while [k < people]$ o: Y8 k+ Q7 ?. S
[$ N6 @& [: [* y  F/ _' m
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)" @  v" x+ u  u# n0 ^
set k (k + 1)
1 _, B, h0 ?( N- t3 }: y]
& ]/ q. v! F0 D5 B$ h- gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 S( {* `- S  Z2 }' A2 E
set global-reputation-list (replace-item j global-reputation-list new)
1 X& t- h$ V% L9 P6 ^2 Bset j (j + 1)# b0 R" g5 F5 A- @
]
; @' e1 |% F- j$ F. N0 j- lend: j1 m- {2 H( L; M! S. `9 w$ Y& T7 ~" b
8 q! i+ r0 ^5 i2 W3 O
4 k# F  L4 [! D! @9 }$ C) w* n

  ]1 T9 R# k. T1 r) hto get-color
1 L& x/ Q  e7 ~4 D  a0 ^
3 \* p" g4 u0 Q" M; Eset color blue
( p" D1 u2 d1 _5 M) S$ ^
end
: |* a& J' H1 h. }, w5 I' d7 W* D5 E6 u# f1 J1 o
to poll-class0 K7 u. l! I2 |6 @  [
end" {) y7 j- H; w! b3 X0 d
) F( `) C; e/ J
to setup-plot17 g  m  k# V- D1 M; J8 |" f" r
/ z5 C+ Q! D4 w' G
set-current-plot "Trends-of-Local-reputation"
: l9 v% O: D( e* F/ g% o! d

/ q# k, E) L" i6 pset-plot-x-range 0 xmax
; @) _1 j; C4 P) h

3 A8 m# s/ w- b9 r! d* gset-plot-y-range 0.0 ymax

% l5 R- c% l8 P% s" Yend/ f* @  S* y; r9 o% `& p

0 t6 ], T3 G/ U0 u) Y0 G7 mto setup-plot2
- k$ T" ~& r2 J! M+ p" v2 r- i3 b0 A. P8 \
set-current-plot "Trends-of-global-reputation"
% _1 g/ J% Z/ h1 m& H
$ S. C. L% B+ q( O0 F; c# p0 E
set-plot-x-range 0 xmax
8 E. i$ h8 y) i5 _' v8 p3 h' d
. _' a3 }4 s6 }! Z3 ^3 j
set-plot-y-range 0.0 ymax
, i9 e5 [  O+ {5 a. _% t
end
. H$ H% t5 e( f2 k  O
8 B. W0 t; {* z8 m1 f: x$ U2 _to setup-plot3( A* H4 Y+ e3 G4 P  V

' V5 v: d/ @' L( Vset-current-plot "Trends-of-credibility"
/ J9 E6 T* H% n6 ^5 q4 x6 N
& K! p8 L5 p6 T3 ?' N
set-plot-x-range 0 xmax

( j- C, [( J+ m0 r; E/ s
8 s" d! u6 W& R: {set-plot-y-range 0.0 ymax
$ t3 \/ C7 @; r" k, D5 ?
end1 a" Q! ~- `8 q+ J5 T/ T

$ F, a: b+ h0 j% @- D( Wto do-plots
' j2 l7 u/ ^; ]9 z3 x. mset-current-plot "Trends-of-Local-reputation"7 X; Q# M! v+ W' z, e7 ?' R
set-current-plot-pen "Honest service"
1 ~* s1 \9 j3 n$ O* c- e) v! `5 @end/ S! C- ]. e2 B+ O9 G

+ Q7 V5 p1 J* D: j. D[ 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.
2 ^- C' k* j* B: _
7 \; R6 e" |$ ?0 U/ l7 _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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