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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:
/ z/ f; {) V0 o8 p2 I5 e$ rto do-business
1 F7 Z" o% P+ I" ^6 u2 ]$ u& O rt random 360) ?) T: m+ A7 s- K! E  H
fd 1
1 l: z3 y$ r: U% ]1 S; c. Y2 D8 G ifelse(other turtles-here != nobody)[3 N/ v# ]. T- g! d1 }' 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.
5 ?  M! p( M) V  S+ a: A6 r5 y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: Y& T9 _# R7 O- f: \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* k% v+ r; V& H; N0 ?
   set [trade-record-one-len] of self length [trade-record-one] of self& j& H% \* r+ _4 ~% k+ \
   set trade-record-current( list (timer) (random money-upper-limit))9 Y9 t0 h, [2 T
# e) L2 i5 v7 ?8 r" I. x& y
问题的提示如下:- O$ a' I6 @" L" T% m

) A5 p9 z7 m: N) q# Gerror while turtle 50 running OF in procedure DO-BUSINESS0 D( k  ?4 W! k3 F  c9 B
  called by procedure GO. o- @. h( L. {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* n/ O; p2 z' ~3 F8 |4 d, x
(halted running of go)
& h4 Q7 \' _- v" q- N; K1 K- z9 ^  j$ ]  O* q2 c  }5 ]
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 s) \$ A: L# f6 Y
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) v8 D& ~4 Z: L
globals[# H) g$ K7 q1 |1 I
xmax
+ Y# J2 _9 ]# j+ kymax, I; Z( x  j0 e+ K; m7 _2 l1 e0 A$ N
global-reputation-list
0 b& G- ]( K, G
8 ?5 R: M1 z6 o+ F0 g9 c9 T;;
每一个turtle的全局声誉都存在此LIST
  _3 j: n! ]) N, e; @0 ncredibility-list
& I2 M/ [- z/ Q# H' A; x" |;;
每一个turtle的评价可信度  W7 P/ T2 l1 p( b
honest-service6 b# s  V, P% |" `$ b9 d+ @
unhonest-service
0 J# u& c5 B6 \& b6 Soscillation
" H0 C2 [) l" frand-dynamic
! F6 R) \4 [1 n; E: Z]5 s# ?. w9 h, \* c: N. _
4 T% T$ Y- b+ \6 d" w
turtles-own[
: d( T3 B; r/ G9 k3 t! ?. itrade-record-all; e7 t5 _1 Q- G0 c  h: {" i  `& q
;;a list of lists,
trade-record-one组成3 c3 {& F5 j# W2 J; I
trade-record-one
) a0 e# U; m! B+ O+ F- z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 Z' ~5 v' @( r6 o& `7 P5 a; X; e9 D4 _" c
;;[
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]]
0 T* I! G7 J' P5 G; l8 ftrade-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]
% {$ O( e$ _' b1 y- 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
( a4 ]0 T; I) v4 a* o! f, W$ h# `2 vneighbor-total
/ b/ H: l8 v8 O* \4 c- E1 L3 j;;
记录该turtle的邻居节点的数目+ z: @+ _: `1 L8 y/ q! l6 a. @
trade-time
! l4 s( D' c$ g  O9 E8 H;;
当前发生交易的turtle的交易时间% ]( v7 c+ u) E6 _4 P# D
appraise-give6 W5 E  Z: D. @2 J
;;
当前发生交易时给出的评价
; |0 x7 ^. E  t, m( P' a9 l5 bappraise-receive
" w) Y/ ?5 \2 l2 g8 w) G;;
当前发生交易时收到的评价
" l  c8 q+ ^# t1 S1 \+ [7 g& Kappraise-time
4 k# q/ \) a8 h$ Z- g;;
当前发生交易时的评价时间! ?; u& `$ b6 W8 _( ^
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ c1 J. _% ^- L% M: N9 a4 c0 A, f
trade-times-total
3 b5 P0 u: ?4 y4 T, V; k! ?;;
与当前turtle的交易总次数
: U2 Z5 ]5 C* v/ \+ |6 y! Rtrade-money-total
5 u7 @8 R% z8 c;;
与当前turtle的交易总金额. I3 t5 q0 v0 ]8 c& B
local-reputation5 h& J7 V* m+ G' j& X
global-reputation& `, F1 [. a  W2 |) U5 s
credibility
7 M1 }8 s% x( Q;;
评价可信度,每次交易后都需要更新
) e; i" l& s( J9 k. }% X/ M. y" M/ Ycredibility-all" ?' {4 H0 Z3 v8 u/ ~% a& `
;;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
9 O& g) u* ~. ^4 Y! r$ k& f
# O9 E2 ~3 t% c& o;;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
4 c' [9 S9 O: g0 B. t7 X5 T* ~credibility-one8 c7 F8 i7 s! w2 N
;;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people6 M* Z- q: A  A' l& `
global-proportion
+ J# h6 r4 |/ K, E/ ~7 Ycustomer
6 N/ b! h0 B6 }( t+ Y6 j$ `) ]* [% [- Xcustomer-no
- n$ K" c$ D* T9 E) w! |trust-ok; n2 q9 c+ }+ x0 h+ h0 |1 v/ M$ F
trade-record-one-len;;trade-record-one的长度
( Y3 i. {8 O, ]' U7 d8 i]( v! S. \% C1 k) g1 I$ M/ y
5 g. h7 c$ O. q  L
;;setup procedure7 Z' U( X- T; w, n  m) q6 ~
9 P; P5 g& |) Q. e' X/ c* x8 g
to setup
0 ?0 x4 @# J4 ^: |  {' O0 V. z# q: a9 _' y" r
ca
) h7 p. a- r, }, ~
7 p8 a' c0 h- y3 d8 [1 D% g" A
initialize-settings
5 ^* E0 i7 s$ N: K  Q0 c2 Q# h
4 a' Q0 v- _- V: ~( @* E$ q
crt people [setup-turtles]

' ~3 @: Y$ p1 I, j" E2 J! j7 V5 f; E
6 k6 y1 p# o2 G5 E# N3 @% {. Kreset-timer

4 s$ B+ e$ @% g2 o8 I! }4 ]- u. I2 h+ E; v; I/ W2 J
poll-class

: z0 v1 O: Q( C% U+ G) K- H" F  Z: F1 A' D
setup-plots

$ i7 v! H0 n( C& s: a, @" C
8 C& L' @! \' T9 ?! L+ f; u1 xdo-plots

) U2 K. ]8 B/ i0 O+ t3 N$ kend! a# o% Z$ ]$ u: ]4 ^0 `

) L3 n6 }; @/ r# Z, _/ _to initialize-settings
7 n% R; M+ R% b1 D7 v, l% V0 v! ?5 |$ K
set global-reputation-list []

0 m! l0 X+ f8 p7 s
2 F9 R) O" d, k3 R" y  lset credibility-list n-values people [0.5]

- E* T! Z. }4 l% I- N! v$ t$ a0 Z; R3 J7 V5 |  m3 ~
set honest-service 0

$ ^/ g2 Z: K# m) A$ `* b0 q* {# Z, q1 {4 z# t
set unhonest-service 0

5 J% `6 }. d9 \6 ~9 H+ \' v$ r  R( f! S  _$ `  w9 |7 Z# A2 k6 p
set oscillation 0
2 b1 }: v5 E' \/ C3 \# b

, V9 Y5 d0 H( hset rand-dynamic 0

3 r7 A7 }5 ^+ \0 S5 `8 Gend
7 S. x/ D# i0 L: k; t* T: Y0 t7 D; i8 g" C; s1 p
to setup-turtles
5 d4 ~, z; c- G3 p0 h5 u% R8 Qset shape "person"6 Y0 B+ V# r+ R5 e9 v& ]
setxy random-xcor random-ycor
: b# |6 Q; C( i9 z- [( P! oset trade-record-one []
5 V+ c% p" K( ^) n0 R4 m
7 V1 H2 T( U; k7 I! [
set trade-record-all n-values people [(list (? + 1) 0 0)]
. _; M1 C+ V" r* b& s$ J4 W+ V

3 b( K% A0 p6 zset trade-record-current []
5 k9 L8 A! |& }( P2 q  L4 W) `set credibility-receive []0 U+ q% t2 z7 _! t$ @' V/ a4 Y
set local-reputation 0.5
2 ^( I- I7 k3 R  s9 R  @set neighbor-total 03 {0 X/ O. ]) n. P3 C( U" l
set trade-times-total 0
  M' Y* ?5 z  [7 }0 sset trade-money-total 00 Y  w5 c; {8 T" S; ^4 `4 g
set customer nobody. \. z; D1 f, `; ~% s, v1 V
set credibility-all n-values people [creat-credibility]3 t& O& f9 f7 d' U, D
set credibility n-values people [-1]: e& z2 K0 E7 Y8 y6 o9 k) S
get-color
9 Z' p* B  c5 U8 Q2 Q9 [

2 z; O9 p+ b1 L( Y) G2 Xend
6 i4 K! r- k% e5 ]* K' `1 U5 D) k
" z! ^1 O: u. V" s6 `to-report creat-credibility
2 X+ m% b) T; O2 j8 _( Y. ?; Treport n-values people [0.5], m( L4 |; ~7 a+ O
end  ^; a0 q" V# p! w" v8 e
  V9 V1 a6 {: b
to setup-plots  N6 z* g% U' N. m: t

9 j% B/ T$ _1 {) f5 rset xmax 30

1 g* |  k! y- m8 J: Q' z+ d/ K3 a  n. m# y
set ymax 1.0
0 y* A2 I/ Y* c- H1 H" a3 \

/ n. x" D" f; j1 Yclear-all-plots

- ?5 q" W/ I9 K! B9 B( `7 \# J* `9 g3 J0 B. {3 O' y$ H1 M4 \- u
setup-plot1
, ^; e9 d/ |: D$ m
* Q. k- t( m/ P& @5 B8 i1 o
setup-plot2
. B8 Q( F! R/ e6 ~$ ?; S7 w* c

. d5 i2 O' |3 \) x: [* z" Z1 Tsetup-plot3

$ }; ]2 [; X' aend' l" F9 b+ [. \7 c! S; W+ _* I4 |
9 ]: Z- A/ X% I) d! u
;;run time procedures, `1 x& u$ e9 Y7 f% ^; T! t

: a9 {' `7 O4 c% M. [" M  G7 }to go
4 ^9 T( P# _# w# B9 n  g+ U3 {6 f4 |' b* M( @5 f* I
ask turtles [do-business]

: ?4 ~4 ?3 f' Dend
3 p; Q$ ~3 o6 V4 w3 o
5 r. a. v' q  B! v: cto do-business 9 J" D2 U6 Q  U

( i4 Q* @2 ~" t4 s$ Y- a! s3 y; P1 Y3 K, p) [# G' m7 v% f  T; {
rt random 360

6 l, L6 U' m; W; [. F$ M6 t) \; Q! m- _+ w9 D
fd 1
* v* l* \/ \5 ^% D
# D, a2 w6 c+ p% O% q
ifelse(other turtles-here != nobody)[
  I: T. U* K9 {% U
, a, z8 q8 T& z; Q8 [
set customer one-of other turtles-here
; d  u: b: f9 V7 a2 |% w) e

2 u4 ?% f5 ?0 A;; set [customer] of customer myself

: {. R  ?- j+ L3 y
  K1 f) x/ f9 T  |/ Uset [trade-record-one] of self item (([who] of customer) - 1)
5 k2 x; z$ w3 }5 K7 N2 c[trade-record-all]of self
/ g# _# _9 Z/ |6 @& i2 i9 C;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# T( Q% O1 k3 w  K

: V$ V) ~6 y+ z9 c$ b. w9 z( Lset [trade-record-one] of customer item (([who] of self) - 1)
: a- O& W, @# Q9 H! D/ G/ O' H( Z* G[trade-record-all]of customer

: u. s  m5 }2 V# I- p; R
* T. w3 c9 v+ j7 v% @/ |& xset [trade-record-one-len] of self length [trade-record-one] of self
  m4 l( c/ H3 \* W" R2 v

; e8 P7 b" ^9 H4 p. a! O6 Jset trade-record-current( list (timer) (random money-upper-limit))
6 d3 e2 r: _1 f0 R& z
2 s8 v" Y! Y- a" Q& T+ c; s
ask self [do-trust]7 g, M5 W0 H3 r5 P
;;
先求ij的信任度' e+ w4 \5 u5 w; c4 f
/ _6 j; a. b9 Q
if ([trust-ok] of self)
# y5 n2 C8 S1 w+ t. B5 Z4 @;;
根据ij的信任度来决定是否与j进行交易[7 E$ g1 t5 C; e  H3 {
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 r" b) X  v0 a$ p

: S' Y) N0 y; j9 L+ r# Z2 t[

4 K1 Z9 Q  U9 B4 M' t) F* U* \  S# b6 }7 F% q) P- v9 b8 h
do-trade

: `/ v0 W$ E' {' w7 p0 k5 \0 a' [% O# \
update-credibility-ijl
5 o8 r1 y8 E5 v

7 `( x/ K# u3 r, u# h: D6 qupdate-credibility-list
! ], X, y2 \4 J, t3 x

9 Q" F+ y5 _+ H2 l$ k2 G" w/ I. B2 d; H
update-global-reputation-list
6 ]3 ^4 y3 u- U" s, U0 u' {

! O- k2 R0 c- H3 u+ Gpoll-class

& o- {4 |7 H  `$ s: i
  m  Z" B3 V! U# Hget-color

9 y9 Q8 a& b8 G7 d+ K7 B5 E+ J3 N) K9 m- s- n- h* U0 g( Q; K  ^; S
]]% ?& f0 a& U6 Y* d2 Z) T' d, }8 ?- C
# t7 S/ l6 s- H: G
;;
如果所得的信任度满足条件,则进行交易$ x7 q, ^: R+ y4 A6 x

0 d7 T  P: w5 u* `9 z' w( d  n[
: u# V* k! m% e9 I0 _- s
$ h! c5 z+ a" R' L: W
rt random 360
9 r9 L. z4 o3 P( B; {" z/ |

$ n5 q% S; G+ `( {, [* Lfd 1

. s8 s& ~% N( ]
# \' i3 U1 `' h. S* R, ~: }]

( `% r: t/ S2 ~
# S3 O1 |' G# e. m3 I% H9 c/ send
1 l2 O6 v! d$ Y9 ~5 M

5 i! b: I; e# @. l/ v; Kto do-trust
8 S9 k7 a  Q0 u  Jset trust-ok False5 ^( Z* k6 O: b7 x

5 @2 x2 u0 O3 s, W. A. }8 g
# l8 ^3 s; W6 K3 N7 L* r4 c
let max-trade-times 0
- D" q7 x; l+ Z5 G$ i: z" }7 pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ K$ v1 c9 i% e  c0 C
let max-trade-money 02 U5 t, C6 r7 E1 J) h4 e0 b" J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ y, M# I! z+ e* O( u! ?1 R: ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! S( M/ E( O: U7 F6 x. N; t. @, r

% r, j$ W, e% \3 U) h/ s

4 r- S1 T0 x2 G+ G- i" Dget-global-proportion  h$ o- Y0 Y0 |1 x+ t
let trust-value0 j$ _) L1 r5 s7 ^9 k0 S3 K
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)

) ]( F5 h6 E  e# e. W( ]; I4 `1 ~if(trust-value > trade-trust-value)6 y. T% ~* ?4 \( Z6 ~
[set trust-ok true]& @3 A; i9 m- ]" v* S4 L  \$ v
end
  s% j" a( G3 V1 b2 d. V
# L/ ]6 b$ i" m) N( E$ ^. wto get-global-proportion% S5 X: a0 ]  R- s% K8 y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 b7 J- x( U* t+ z( D/ F1 m# C0 q( o) T[set global-proportion 0]
, X& ~! g1 [; D) N5 R* j8 i9 T[let i 0; k2 T# @* ]5 T
let sum-money 0
! `0 ?# N3 n' _while[ i < people]
' e1 z$ N2 W! |1 |# g: b[
; B% D! m1 E( R5 Wif( length (item i
3 i4 G9 N$ z1 F) C0 C7 x[trade-record-all] of customer) > 3 )

6 _" R8 V% X% _[3 Q( r% \2 u6 M9 i: @% t6 g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))( u3 l' d" H8 {5 @. C
]* w5 R6 w" I4 O9 v% N# n! Z
]
& ?. X" z& H; l" nlet j 0+ Z9 Z5 O# J& k" K) O
let note 0, a# V( n+ B- m/ O$ z. x2 A
while[ j < people]" e4 O& J. s) Y1 c* z) W
[
7 q1 k3 `6 ~0 m$ q8 vif( length (item i
' t# Q/ \' g& x: J5 Z[trade-record-all] of customer) > 3 )
! \0 P/ N# {, o2 E5 B5 S8 r
[3 @8 ?  J" g2 ~, q# T4 C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* N: B' g+ |; g1 C. {, E+ f. y  P3 l1 G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 o" p0 G8 w1 q- L3 m4 o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* K+ Y& ]( U* e+ W( g7 Y
]* l0 O9 g" w  O& O/ Q
]
: v+ d  @$ m- U: t# G9 ^set global-proportion note
0 W1 p5 M0 z* w4 e" o]
% p$ i5 A- X) \( x& _: cend' l2 ?3 ]+ P; }3 ~+ n) M- P

/ g5 k$ J% e0 d8 |4 d8 kto do-trade7 |# \) k/ F* [  n
;;
这个过程实际上是给双方作出评价的过程9 o+ f, m5 n  m4 {7 @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' e* L2 {- k, U0 N3 h) |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" Q! M5 \; L/ ^2 M) J% h3 ]
set trade-record-current lput(timer) trade-record-current& f& ^, C  ]; `+ K" ]/ {
;;
评价时间" x" W6 O; k/ O) e" ^
ask myself [
' `, w. r# v; aupdate-local-reputation
) X( n/ C. h  s: T9 [) T, }( G6 o2 Vset trade-record-current lput([local-reputation] of myself) trade-record-current" l9 ]- Y0 F* w' e2 R& O
]
# ^0 ?# D2 H0 Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 \8 y, y2 W6 }9 N% B;;
将此次交易的记录加入到trade-record-one( f! k- U, i) t3 ^' @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 g/ y( e- f: Zlet note (item 2 trade-record-current )5 w" I8 G1 v5 Q7 ], e, u9 v
set trade-record-current
9 C( H4 q- \# I(replace-item 2 trade-record-current (item 3 trade-record-current))

: R: u- J8 `% s$ _1 y# }+ n# Iset trade-record-current
  g! Y% {3 Q! }; W, G4 V3 k; P(replace-item 3 trade-record-current note)
5 M3 m3 J& Y4 p/ x) @% X9 Z0 c1 ^5 m. e  m$ O1 j- t

2 P$ I/ @# ~0 Kask customer [
9 j- d; C* Q  b" X, \update-local-reputation- T( o9 E' F: B- g! H/ ~/ q0 G
set trade-record-current( o' m8 ^! S6 `2 ~0 F; ]& z. s
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* s" |- \: e/ l6 v! L]
0 ^& V4 D+ y5 M) T0 k
9 X4 n9 s7 S: q8 v- ^

( l6 |/ S- o( Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# Y. s2 i* {% D* o9 a
5 c$ Y$ g- l; B& `: T+ `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" F  V6 Y8 i* |' Q# o
;;
将此次交易的记录加入到customertrade-record-all
  Q7 h7 f) b* `end
4 }4 v+ O6 x2 W# T' n& F
+ {- y2 F: V  m4 Z, oto update-local-reputation* G) ]% o* P1 Y! H5 d& G
set [trade-record-one-len] of myself length [trade-record-one] of myself" u3 U+ g/ ~# _; B& F& Y

# s' {6 s/ l: C# m% E, v
& j% z3 g4 K2 b  R* U# O# P. G) f;;if [trade-record-one-len] of myself > 3
; o" z( d  F/ K' d0 `3 Q. u& m; \
update-neighbor-total
4 l" }- S! J; F% l, ]: v;;
更新邻居节点的数目,在此进行1 x8 @8 P6 F0 ?: K, ^
let i 3# @! ^2 u' x' k# S
let sum-time 07 _  \; E7 u% U5 C' p7 z% x
while[i < [trade-record-one-len] of myself]
% K% R8 h+ a6 Y2 o  I. r[
+ [% G" o+ Q. |' Lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# Q/ V, a) a: _3 l! n
set i8 N! I' [0 l7 B6 r+ s
( i + 1)

7 @1 @+ ]* [. f1 D- P* D: p; W]3 q! Q2 W% Q6 C! B* x2 [
let j 3
/ B4 @4 X9 F5 d' i- Z  [2 Nlet sum-money 0, O" R! @0 {: R4 Y4 t
while[j < [trade-record-one-len] of myself]( X5 v1 s: s& I! {" {
[) s8 A9 Y( ~8 P3 R8 G
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)
7 `& R, L: b5 s% kset j/ C9 v. h; K" h9 A% N! B, d
( j + 1)
% N  {7 R. o/ b+ O. F
]
3 X& c1 |$ T. Z/ p$ D$ E- `let k 3
/ ]( `  k9 R) W) S  xlet power 03 e9 V) c% J6 b/ J; ^
let local 0+ h! Q# T- X3 s! v% s
while [k <[trade-record-one-len] of myself]
7 B7 t5 Y7 A; N% G  B9 O4 ~5 N[: h( h$ j( N2 T$ z. D
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)
7 u6 w" E4 }4 y. Q; U; k% I; u& zset k (k + 1)
$ `0 \/ B) N$ y2 Z/ z# t5 z]
7 {' H/ k  h  D. c" Yset [local-reputation] of myself (local)
5 R* N% l7 {+ Fend
- W0 P+ x! d* m# l: }; _4 b- s! ^0 E" g8 K
to update-neighbor-total4 s! j9 g; X$ X  A4 j7 c0 Y0 D# m
, y6 z: s; i( M' n4 G9 Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; W9 C' c+ R( S( h; @; d# p

( {6 S; R+ K* R- E$ b, A& @8 u

; G; C. s* X/ ~% Gend# l5 M. U: y" B# a8 T

& G, k; G9 ?* v, I* eto update-credibility-ijl
5 r/ A/ ]; G2 E9 a' p8 v! [9 B5 H! M9 f: m' Z  V: Y
;;
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。
* i0 f6 X- E4 H& i' a! i8 X9 Jlet l 0
) @7 Z1 a0 y( ~' Z; s! d7 q, Uwhile[ l < people ]: V, B8 l2 j0 l& L" Z/ V
;;
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
- D+ b# h- }) ][& y. {3 G$ j+ G. r6 b' J
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 [9 I5 {- H& r( k7 Q- D# nif (trade-record-one-j-l-len > 3)
( Y' v) u- f. H[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-one
4 S4 o+ H9 W% s0 R4 ]# l, Elet i 3. l+ a, _- Z8 A/ q: L
let sum-time 0& k9 C( C! x6 N
while[i < trade-record-one-len]
8 ~1 u! v$ g% H+ M! y9 b[
$ |) l* j! g. K& m! {9 w* Aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# \; i1 @/ a' |/ P+ Oset i
2 {: R* ~3 ?+ {. y& v6 [( i + 1)

6 t  K/ \! y+ _' N! t; Q]5 c2 N! J' x& R5 y' I) {
let credibility-i-j-l 0$ R5 i# i% ^7 d
;;i
评价(jjl的评价)
2 r" w9 k1 L/ v" llet j 3
( V6 K* K! Y2 |& [let k 4
8 r+ y9 i1 h$ Y5 h# H; T  Vwhile[j < trade-record-one-len]) }- y& [* x5 r! ~
[: T3 O2 C3 p$ q, j! X8 _1 c
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
) {3 U( ^' i/ u0 h/ Iset 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)
$ [5 |$ p5 {! g$ c7 {- J" i( R4 wset j+ y* Q! G! }8 X: C5 a4 o6 W  Y8 q
( j + 1)

4 M) p! z' U/ `]
, W& k8 ?* |/ pset [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 ))
' b# _, m: e& g) ?  I0 b% J  B: K6 ~- P3 o

& I. F7 k: W, U2 R* g% X8 mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 S2 F# d0 A) Z+ \
;;
及时更新il的评价质量的评价
" ]( D0 U1 L7 B9 j& W* fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! l9 a) i  D* d6 J% N  a- h
set l (l + 1)% N+ T( a/ a/ `8 h/ m! C
]
0 Z. b! g$ ?2 G1 x/ o1 z" a  ]  {end
7 n$ J( }' _9 h- k8 f  O  G8 }. G# A" [% D6 m! F6 k
to update-credibility-list
2 }7 K- j- A; A5 slet i 0
2 x) R, \8 I; k5 o' R: }+ gwhile[i < people]3 U% J, t, d( Q; |! D
[
" t% v2 g# z( [0 R$ ]2 Ilet j 0% ]3 O4 d6 Y; P8 E$ l# K  k$ D$ M
let note 0
' `% H; b# s' q4 c% \let k 0
+ \$ K9 x0 U- N: x+ f9 R) b" T;;
计作出过评价的邻居节点的数目
; }! o& I! m. J1 Z  g$ T! Qwhile[j < people]
. L& T. J4 m  J# |1 M! M[
# e5 x* K* [: a9 Nif (item j( [credibility] of turtle (i + 1)) != -1)
7 |* x2 Y, r  p" H. k& o% J$ D;;
判断是否给本turtle的评价质量做出过评价的节点1 q8 ^$ m8 Z( Y6 ]$ d
[set note (note + item j ([credibility]of turtle (i + 1)))
1 D9 A- O' p" i( g7 o' D& n;;*(exp (-(people - 2)))/(people - 2))]
, j3 j7 J5 s# ^) R4 B, e
set k (k + 1)+ D) K! G* L2 }' \
]/ F: m3 n+ Q; C& T) o9 O% D# O* x
set j (j + 1)
2 }1 `0 y  A. O& l]
$ ~/ c5 e5 |  F* \( {7 Cset note (note *(exp (- (1 / k)))/ k)
( k' D! T: ~% m7 ~3 Gset credibility-list (replace-item i credibility-list note)
! @& J2 q; n. p$ b6 Cset i (i + 1)2 h; `  P# U! y  f  E: q8 Y4 H$ c1 [  d
]
" I8 Z# W6 z% y) |1 ^( |8 a& Send; R3 Z" ~, C; ]" w
: F: B: X$ o7 _" }3 J
to update-global-reputation-list
) O# I1 }; X) Alet j 0+ `, `9 {0 f3 n' o
while[j < people]
4 V' k( M# {. \[
% p4 ^, E1 J/ U/ d& Q8 _; dlet new 0' Y- m4 S' n/ a" I+ V! P! Y
;;
暂存新的一个全局声誉
/ Z" D' j9 E, f& |let i 0
& Q7 H* V  u) [$ m- wlet sum-money 0- A* x8 r9 }1 o! G' P: u
let credibility-money 00 M( `9 m7 a) w# F
while [i < people]
  L( O) w9 N! }8 v[1 p/ A1 ~2 V0 P% v% O5 `; u3 Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) z7 ]9 G$ {+ J8 I, c' L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 r! w6 A7 U" h' Z# h& F! \2 g: _
set i (i + 1)" r7 H% x* Z* `! O# d
]3 c6 W0 R2 P5 h: F  S. x
let k 0
6 [5 X/ q: q& ~let new1 0
* F" I* z0 M6 i, D/ |- S1 Owhile [k < people]5 {: R: C* z  D5 r
[) R9 N4 K1 s" n6 C4 d
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)
/ A. J! {; f. Y8 g- Y( Jset k (k + 1)
% R+ y  [$ G4 [& X  w; @- z]
3 ?5 f# x( |% |$ s+ H1 V& z+ A# jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% l* J; @: p7 q3 D0 F; ^& P; Y, Qset global-reputation-list (replace-item j global-reputation-list new)
9 Y6 D, g4 f" {- g6 Mset j (j + 1)
8 p/ X( ~2 Q9 h& ~  o4 {]
1 O3 @7 M" E0 B4 l# ?$ zend* c9 m* w  n2 g* o/ r

, a$ M: ?. J. y8 B! o3 x5 L" t5 o/ q; H& {. t/ u

$ V# b# B! }% n3 e$ r2 s% F7 wto get-color
, p2 N7 |; T2 k. q
6 Z; n: F4 X# o( S# ]; e' zset color blue

: n5 D$ g) ^8 o; H3 Send
: p9 M+ @* m5 J# Z4 j+ N2 C
4 a: d/ P  d7 w. ito poll-class% r4 E/ K2 y9 _
end
. u& G( z" D3 {+ ?) H7 f
: K' @4 H/ E4 l9 T6 P- @1 uto setup-plot1* F" `& K" |) h1 a4 [9 m

3 ~9 A! D- f0 Z8 i& j. R6 oset-current-plot "Trends-of-Local-reputation"
9 @2 l$ N; i: e
2 P' F4 g% b6 ^1 X
set-plot-x-range 0 xmax
* ]6 ~+ O. {5 D3 s& x

" s  f6 G1 B/ n5 r% sset-plot-y-range 0.0 ymax
1 [8 ^) Z9 y: Q% ^0 v
end0 r( T! V) x1 e
3 Z3 d: [7 W( f) ]
to setup-plot2) U$ l0 n; w- v9 |5 t% I

& \. `5 c/ x7 {& yset-current-plot "Trends-of-global-reputation"

# A9 B7 l8 ]7 T, I# d+ u- w& j
3 P! t) n( Q$ kset-plot-x-range 0 xmax

9 g" J8 G3 H6 F6 r/ c2 R  b7 S! [+ y# o2 P- R% x: l
set-plot-y-range 0.0 ymax

& v; d; o- `+ e# D/ Yend- m2 T0 n) D* Q0 ?0 t
9 f& o( y9 M+ W2 X
to setup-plot3* W& j8 u. w. ^; K7 K) }

( L7 t% j" D! R3 Mset-current-plot "Trends-of-credibility"
1 z) s- @' m: a1 [

5 Z& ^3 n1 d' `% ~set-plot-x-range 0 xmax

2 z+ [$ c6 }" C+ }3 z
5 g4 ~! b! f  O1 S  u- {! ~set-plot-y-range 0.0 ymax

7 }  a8 [# L+ W/ E3 fend
; R! _$ @: \/ k: |: i- e4 [9 m0 ]9 o) p) [
to do-plots
  h6 ^7 r; d( {- i, g" xset-current-plot "Trends-of-Local-reputation"+ }+ H  t) s/ ^- J, u) H4 D" y
set-current-plot-pen "Honest service"6 J1 c) p  I+ o+ p' j4 `4 J
end
, ^$ ]* e# q& i% i1 J7 a' [' c" q1 t, Z5 _
[ 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., l( I1 o/ A5 |

  K7 N" ~0 V8 T" ]* w9 t; R7 z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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