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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:; H. |/ g+ p0 t& f" C4 H
to do-business 9 Z( \8 `8 |2 ]- T8 O- }- o
rt random 360
* w( i4 N4 E! u fd 1, K% k8 ~6 x+ T8 H7 w( b
ifelse(other turtles-here != nobody)[
3 n2 f2 C7 C$ U  L* u* b) u   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.: K1 T% \: i" k' l) u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: B, H9 K. z' c8 s3 L   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% g! Q$ C2 |5 b: j9 d- ?
   set [trade-record-one-len] of self length [trade-record-one] of self$ b' b" X* _3 p2 h  R
   set trade-record-current( list (timer) (random money-upper-limit))- T( Y7 d$ t, |$ L. o$ ?; U
' w9 j, e+ _- I+ H8 Y6 f( P
问题的提示如下:! ~) j0 M/ l; |
) }6 j7 J2 c  Y0 g- ~
error while turtle 50 running OF in procedure DO-BUSINESS6 F" o3 \9 X* E* k
  called by procedure GO( V5 {6 o9 i6 {5 u  y8 k
OF expected input to be a turtle agentset or turtle but got NOBODY instead.: X9 ^# t: B; ?$ u- X
(halted running of go)
/ `+ S  {$ }# H2 Y' W
4 Q" A/ F6 {  _4 s+ g: a- A  P% T2 t8 t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~~  F7 ?' d/ E& \$ p! l
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5 L$ [5 `( ]( e7 o" x  {
globals[
0 Y6 _& h; G  {xmax
; H# c* O2 P, `! n3 O3 U) S% Oymax
8 Z8 Q  A7 ]! p2 p& \0 x0 X+ o, U4 |global-reputation-list
0 |5 r, N, M6 b# [( q7 m* [
3 K! k: e0 `* M+ Z/ Q7 X7 O  _;;
每一个turtle的全局声誉都存在此LIST1 A, h6 P$ F+ `6 P: ~4 U0 {0 p
credibility-list9 i# H# X  I8 d4 X' M
;;
每一个turtle的评价可信度
+ V3 Z, M. p! s' P8 t2 d( K( r8 l7 thonest-service" T5 c. `' f8 `) n# w7 I
unhonest-service* F0 y. ~6 y8 y6 q* l1 }# ]/ n
oscillation
) i0 ~8 G2 n) o6 qrand-dynamic
7 ~$ W5 Z1 F+ }: t- F: r]
5 h8 l" O% `6 f7 `+ r# P
, T/ k7 }/ ^4 {. _- `4 yturtles-own[# s  J2 M9 [" u# K
trade-record-all
. {2 b7 X- m9 _; j;;a list of lists,
trade-record-one组成
: z/ {2 b" n3 O! p; mtrade-record-one
; t3 p- L  r( j7 D2 K  t4 T, g! O! x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ L& D9 d& v# Q+ Z6 l8 |# U% p. A5 H' f% b
;;[
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]]
. Q4 }( C) N' _+ Q" Z7 c. G# `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]
& n% _0 g. w( a: Icredibility-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
6 `7 L8 u0 D/ rneighbor-total
# r; p; d+ u% ^; @2 \;;
记录该turtle的邻居节点的数目
' t7 q. Y* Y* u# R3 e6 w5 x5 Ftrade-time; L9 e% e! l8 L* h  o! b% ~8 p8 n$ c" j' ?
;;
当前发生交易的turtle的交易时间5 H4 z/ D  m+ P4 c
appraise-give& H. Q, {' F/ a$ F
;;
当前发生交易时给出的评价
0 d: q& ]8 _5 X( r9 a% E3 f$ F4 \appraise-receive
2 \- R6 I$ \- X1 B! I7 h;;
当前发生交易时收到的评价9 ?9 Q; V7 ~7 e5 Z0 ^: R
appraise-time
/ S% Z9 t) w! s. f;;
当前发生交易时的评价时间, {3 M. q; z* W$ b' _6 c8 |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; `  B2 ]1 D! {, R: A- c* utrade-times-total! |% u( l" v2 ^# m
;;
与当前turtle的交易总次数
, A3 o) I& E5 ]2 B- F6 ?* w0 Wtrade-money-total/ @) p. {" t" F  j! d
;;
与当前turtle的交易总金额- V9 F( k8 L, m8 C0 S/ _+ N
local-reputation1 b8 e! Q+ Y( n6 o( p) Z/ X
global-reputation
% n9 D- Q/ i% O' f# Qcredibility9 o; \- N0 p/ n* x9 z2 J" N% [  z
;;
评价可信度,每次交易后都需要更新
& \$ ?& W' b+ U3 _credibility-all7 A# E$ Q) C/ l
;;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% o: P; p$ I! A! Y

* k( l0 ~( Q0 i4 z;;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
' N6 H2 E1 j2 T# C' b2 Xcredibility-one
1 f  F3 t; j/ V0 z9 h;;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: g; U( @3 G. ^1 }
global-proportion$ a8 K4 x! ^' x' K1 K( j! `
customer
: M$ a9 n- h4 \  k1 Pcustomer-no5 V8 x( C: h) R/ V; `% a4 v. w6 m  s
trust-ok% |/ D" G" a; u2 M
trade-record-one-len;;trade-record-one的长度
5 n' f  Y0 r/ w/ p2 R) p]; E  C' H1 |* r+ W$ B

% ~, ~. y6 T3 F$ T  S;;setup procedure$ C# u$ _  V% G( }& b. ]

+ M4 H0 ^8 w# Q7 \- Yto setup
- [: C7 @$ J+ z) g, Z$ F( e
, x. o5 Z$ }$ y" Q2 S+ N8 K# @ca
( X5 Z+ V/ z) j, |# M
& e$ U/ \# D  a8 J0 Z0 I; J$ M! }
initialize-settings

3 D3 ]6 P3 }1 ]! I
% f# {4 C  S, P6 S+ }. Zcrt people [setup-turtles]
' Z- @1 r2 `5 a- f/ Z
- {* L7 e5 q3 [$ C  L, J/ Q
reset-timer

, o. t. L% i( i: j' q7 v; K0 E5 o1 `, e3 o, E$ _6 D- H
poll-class

" O( n3 c. w% ^* Y. [1 l* c/ g/ A- n
" b7 m1 S  v) ]" A/ V9 Esetup-plots

+ V6 X3 }5 G" Y6 f# K* W, t$ \
0 ~6 W& o9 e# H( ?) ^0 Z! zdo-plots

) b9 n: M) ~; Z9 u: Z( ?end
: w8 O6 D3 T' a! u! ]2 ]. h3 M! B" r8 b' _) z& K% w! l5 H6 q
to initialize-settings" V2 Z0 A2 V* p# K/ s( ~

- h- c4 k5 l+ T3 Bset global-reputation-list []
( ]* U0 ^( k' L1 f* v
" ]3 l! \& O9 Z0 V; \' j
set credibility-list n-values people [0.5]

% z+ g: j' W6 q) p+ B: a7 g" E7 B9 x
; _9 f* n7 v$ S: w7 T% rset honest-service 0
6 X: R2 l, t7 c' B( x9 m4 e

; ]* e/ b# }7 D: Mset unhonest-service 0

- y8 T/ n9 t/ K9 n
& G8 x$ F1 [: d& x! n1 r; zset oscillation 0

: x/ z" c/ u/ ]1 D* R/ E+ i# A/ t8 s' D4 p" b! q* a/ n5 p) g2 E
set rand-dynamic 0
/ Y3 A' }$ r4 v: S6 r; B) S
end( k1 r8 U4 `) r) u2 k
# C" r7 C$ D; F5 P. l: D8 R* _
to setup-turtles
' S% G+ U6 B. ?* W" i! k# wset shape "person"% i% o0 }! x+ H. c9 n: N
setxy random-xcor random-ycor
9 W8 L* J8 M; ?% n! C# p% Tset trade-record-one []$ \: ]5 g: N' J: F
1 Y5 L# S2 h8 A/ a
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 T" N8 P& |) J: `! @* v/ p# _
: f6 R" J2 L% I. _! S% `9 [
set trade-record-current []9 h: |7 y2 m& S  U4 E# d! p% @2 n
set credibility-receive [], }% h. d4 ~7 Y3 D) R6 a5 ]
set local-reputation 0.5
. ~( D7 a% |4 D/ W! A$ [set neighbor-total 0
1 K3 c! ^$ s# C5 C3 d) sset trade-times-total 0
+ H: f- I6 D3 x* A1 Hset trade-money-total 0- }9 T( F/ e9 b  ^; c. @
set customer nobody
- [( V3 Y0 p. S) L* oset credibility-all n-values people [creat-credibility]" [. q# R! O+ H9 m
set credibility n-values people [-1]; \. u3 J9 g3 V& S+ N
get-color
: U, \0 s: g& ]/ ^; m2 b; g

4 x$ D, i5 @7 M2 xend2 Z( h4 Z4 _- R1 i

8 a: j8 b: a' j1 i& kto-report creat-credibility
* d- u& n! ^; |& Ireport n-values people [0.5]
2 `, X3 n0 }! M+ E8 _9 |! ?# \end; V( l& c! h1 C' [* Y
/ e: _1 V2 s6 g2 p5 B  w
to setup-plots
  G4 ~) g: Y. G# U* `  ?5 J* o/ S+ n; l- b
set xmax 30
6 R) u, i" E1 Z$ V8 b
7 r7 o1 c+ v  c5 j' f, E# ]
set ymax 1.0
& ?: [# p  ^9 h6 I% Z9 M
$ C7 d& d2 k6 ?+ a# s/ C- }- m
clear-all-plots

6 s# C3 P2 G% o. D; h/ k9 ~# @* s3 n, ?6 @+ l$ p. L
setup-plot1

) C5 C5 c, b. O: U" R, p' R% m2 o  U7 D
setup-plot2
( }) T& b7 A* \- @1 u: D8 p  O
+ t! g; e) y4 o4 w9 [
setup-plot3

! F& _' R: g* l& v/ Zend8 K7 x7 {4 n* w+ S7 [" q

8 m4 C1 \; U) V& o/ n" F( f( D;;run time procedures
9 J8 o: c8 O2 ~1 F) m0 ~& y. J. k+ p+ j3 |! i5 }4 S
to go6 E' U0 T! w) @5 n2 [* i* m

- A9 E, s# n$ j. [3 pask turtles [do-business]
" j- q. d: U7 F% C7 @
end5 E. x* }+ h3 H
7 \' J9 W3 M& C/ {* D) ]
to do-business
* L1 }2 A6 U2 R6 k. F
  B, n4 w$ b$ J6 R& n) ?4 l6 I7 y
' j8 G6 w+ h" `; t5 q2 z# L) {
rt random 360

) v; j' r+ _& f7 K$ }/ ~0 @0 \/ A! u0 W9 x  R* w1 H
fd 1
  P. ~1 B, {; e' t) Z: R7 p* j9 G
6 t, R! e* R* |3 _- `3 e
ifelse(other turtles-here != nobody)[
/ N6 {' q: A9 S, z/ j7 P0 ^
# a# I4 N! a6 {0 I3 p
set customer one-of other turtles-here

9 v1 G. L: w+ A% y) d' Q
1 T9 I- U- t- u5 X- P! m* n;; set [customer] of customer myself
/ ~) g: g9 e5 t; b

* U" s( e: Q* c" yset [trade-record-one] of self item (([who] of customer) - 1), M% K/ Y) G) N# ]- g; Q
[trade-record-all]of self
! w$ t" t" r" i4 J" s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' H0 `4 C$ e1 k

( e7 ]7 |2 |1 i; L$ rset [trade-record-one] of customer item (([who] of self) - 1): f' ^7 C8 Z5 f$ ^' @0 I
[trade-record-all]of customer
6 j7 C! p( F' s- j

, M; V0 P; t2 W2 Q% O+ ?6 R$ Pset [trade-record-one-len] of self length [trade-record-one] of self

3 [0 C, q, C. F- m0 t7 ^  n- G  A) u# i" C
set trade-record-current( list (timer) (random money-upper-limit))
. S- `- R5 I" h

! }% ~" }- U( q; b- ~" I! Wask self [do-trust]
& c& C; d: [* Z9 K  d6 R;;
先求ij的信任度) O1 s' B+ y( R9 q) h" ?

( [7 r8 p5 v: t4 E6 j2 e$ I. m3 Cif ([trust-ok] of self)4 Y2 P, p/ \% J- A
;;
根据ij的信任度来决定是否与j进行交易[
) _/ {3 N4 i7 n7 Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 r8 E; ^9 S; c5 K' J9 ~  K) y* C
[
, ]" H0 g) `! _3 {6 R/ ^, V) a
$ W& N; u# J$ Q& g. G
do-trade
$ q; \2 |8 U+ r/ Q$ k$ |

, r$ z3 v3 d. M  ~3 @3 {" |update-credibility-ijl
+ [2 s' i2 i) p+ ?( ~) q
! n  l% q4 V" G
update-credibility-list% e* Y; L, N! u; o

; j5 z( y5 ?, z
% F& G. O& ?5 `# lupdate-global-reputation-list
1 l& B7 x! k+ X7 ?

9 i, U9 I5 h$ |0 Z( |poll-class

% Q; _6 H2 ?5 P  {) k5 F
: U% K' g; T& hget-color

. {  g, e4 c, u' Z2 k8 M# O, t/ i( g. N6 e
]]
" E  Q2 h4 w9 V: e; s
" e+ D6 k9 o2 f8 k5 X4 t;;
如果所得的信任度满足条件,则进行交易6 i0 D* d0 M7 {. l9 ~4 z3 \
$ G4 `9 d1 O1 q3 f  w7 ]
[

) q! n1 D# I! w& n* Y$ f: M2 R
( [+ h' \5 X8 [. d; E9 D2 h  {: w. Ert random 360
8 t7 {$ X. I& f
- w/ `$ P  e- I  }& j8 c
fd 1

9 b7 G8 T, `; C, Q) F! k5 g) w* f0 T: E
]
6 a3 H! `/ W" V
$ B' c% \3 S6 N
end
2 M* H% M( ]! U$ |  n
5 W3 H: D* y) n3 T$ ~4 ]2 |
to do-trust 4 Q9 t# ?8 K5 i4 N# S0 _7 \
set trust-ok False
. i0 q+ A% B$ ~5 h" j) F+ ]1 b6 c2 Y& I& G
. A1 ]% @/ Z" K2 x. y% u: q
let max-trade-times 0
5 u" W" g: s# D% @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 J# K: P6 K4 {3 y+ o( ilet max-trade-money 0
# S2 B( V6 E1 m6 @' g0 Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 [6 ^9 A" D$ ?" ^1 h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): l. v, p: G& h4 Y  F% K1 P( O

2 h. X0 ^& u$ @4 M5 u( }& J
3 |4 O1 P/ ]8 W6 ~1 U; ?
get-global-proportion$ q4 |  t8 d, C" P- @
let trust-value
8 s, A4 o+ ]6 _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)

3 i" _+ V" C* {! S. N. |if(trust-value > trade-trust-value)9 W* h  z. Z4 E  g2 O+ q
[set trust-ok true]
7 j/ I% o1 e- D: x2 q6 I" uend
) X4 H' G, l" j3 M% r" M  Y0 Z, W! u9 j6 g% {
to get-global-proportion. t6 a3 q. O: m2 g8 z" r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ g- d& z: K7 j9 C8 y6 S; u" L' P7 H[set global-proportion 0]
0 y9 Y7 s, U3 h3 O5 R$ J" G2 u[let i 0" e. @; s4 @/ g/ F
let sum-money 0
7 e) P$ o6 }% f) j4 r! p, W8 _while[ i < people]
, k! Z4 w# F# e2 [9 i4 j% P. Y( }8 t[1 F/ \! J6 I. S' {4 V8 t% ^
if( length (item i
* Y. h$ A( d) r. h0 E[trade-record-all] of customer) > 3 )

% X  K  X" e( D2 Q6 i[
4 M4 V: U% d+ J% c; K) Fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ O* x' K& Q# p' V( v+ X& i4 A) J]0 O* z! Z* I! I9 ^. j6 V
]% e# D: y9 U! {* {
let j 0
: v& b6 |0 E1 C9 f2 g" Clet note 0# |" X# G$ r3 F2 M* W) l$ F( ^
while[ j < people]
, z: l6 [# \6 J! g[% h0 v- y- `! M0 E: D
if( length (item i
. X: @2 y9 b2 c2 A/ d3 ~6 ?4 X[trade-record-all] of customer) > 3 )
' \' J% T' L9 E
[
. e) m) c, m6 s* ?# p: q: ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 R8 y/ d* S, N4 U+ M6 q3 |4 e
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& I6 m* F5 w& u9 J: j2 [+ ^( A
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 O! i& r8 `  m2 |
]/ U+ k7 g; p$ ^& ?6 ~: M5 v9 @
]
) N0 ]& ^/ S# l* k0 {0 p' Lset global-proportion note$ a1 O, G! {& d( P3 t" C* D
]
" R( Y; y/ p0 [# w5 lend
) x2 h+ y6 ~* ^4 K
. _! R3 J& s& s1 ^to do-trade* `/ D  \/ A2 s+ Y2 o% ~1 Z1 u
;;
这个过程实际上是给双方作出评价的过程
: p7 Q( P5 U+ Z% h/ T1 W6 j. O7 I0 cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* o6 W: s% T" h5 T; g8 B" k9 p5 @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 r" Z7 S& S! ^$ X- c; N- nset trade-record-current lput(timer) trade-record-current! r+ _4 m9 x2 z. C5 @
;;
评价时间3 |; ~$ B: O( q- w0 x3 _
ask myself [
5 L, w) t9 U* Z3 s! H6 S0 `- nupdate-local-reputation
6 }1 w- q" E" Z. xset trade-record-current lput([local-reputation] of myself) trade-record-current
; U0 i0 q/ y( B  V# ^' V, \]6 E( ]: Q3 O7 m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 B7 R% s* B" |; I$ n3 |: ~
;;
将此次交易的记录加入到trade-record-one
: s* Q6 b: b* f" W7 U4 T, Qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# X, U! H3 O8 l; T# T. j
let note (item 2 trade-record-current )
$ j% `& U0 W% eset trade-record-current- e8 Z6 w& N$ f
(replace-item 2 trade-record-current (item 3 trade-record-current))

% n. c/ z+ n9 H% @$ s4 g7 mset trade-record-current
. J1 ?( l( I, I1 `(replace-item 3 trade-record-current note)5 {( V( U1 {2 Y1 p5 A
$ R' r" s: Y, W% q3 c  k
& Y4 C3 a& |8 A7 |
ask customer [3 e4 r8 V4 I, g2 Q" M8 U$ K6 m
update-local-reputation
4 j, W# C4 u7 E/ B8 w( X" nset trade-record-current
) X9 r2 N! @1 V* G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 v4 m4 x9 F9 F, M; K, h
]
7 `# A' j" a7 }$ k
/ T3 p9 _0 |% H, j4 N, w
/ w1 v: H6 A% J2 T, r8 u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ I) e3 V& {7 }* g

9 E# h+ z! S+ f7 lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) a6 Y" A: x9 W, {;;
将此次交易的记录加入到customertrade-record-all7 T" Z% J8 o$ ]" y: Y, H
end- }# H( f: X- X* K
/ [/ j+ U- w8 O: X& ?5 d( o; o- t9 \5 B: d
to update-local-reputation! c. @- W/ x& i, o
set [trade-record-one-len] of myself length [trade-record-one] of myself
0 C9 Q' B/ ?5 o* `7 n: D) t
7 H6 \$ J" S. v; W3 ~6 p/ H. Y
1 [% y; Z* q' ^) ?% Z, k6 o;;if [trade-record-one-len] of myself > 3

0 C+ I. t8 f$ O( M6 ]( C, C7 O; ?update-neighbor-total
2 f* c: ]# q( O- z/ b3 u;;
更新邻居节点的数目,在此进行
5 z, S; q" q4 W0 Plet i 32 a* X7 e: V2 f( p, M( p: r9 ]0 y
let sum-time 05 N' r7 s, T- }8 B
while[i < [trade-record-one-len] of myself]
  s7 R% D: ]& d6 m2 W[
8 Z1 K0 U6 g' wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 h9 G: \+ O/ C2 d0 P
set i
* ^0 [' b! p: \5 f9 L( i + 1)

( R) ?) Y* H: I/ ]" X! U]
! x' C/ {- {/ Y- Flet j 3' X/ A7 z" @" _2 w7 y% A
let sum-money 0
+ i- [# I+ G8 R" ]7 r6 hwhile[j < [trade-record-one-len] of myself]
' _# b2 R: F7 k7 ]7 d% c* a[
( D8 g  m& _4 @: t; W! nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* ^) r4 E  }8 `7 G
set j3 x4 J, L' D& z, X5 F9 f- {
( j + 1)

2 A. @1 w" R+ E  Z2 u) V]$ S; V. a. M7 ^* O) d! h- m
let k 30 Y' O- M) O; e. O/ e' o. y4 }- H7 J
let power 0
7 ?# H3 v5 V* ilet local 0  ^, J5 s% \4 _: f" N+ P4 G
while [k <[trade-record-one-len] of myself]
8 `* G* J$ u7 \; i- D[
0 [3 e4 f& U7 b) U9 M" N& X/ Tset 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)
. X, E* W# t, b' L. J0 @set k (k + 1)( b. P& r# S6 W) g9 S- ?$ |, [
]! m& ^, b' e; r
set [local-reputation] of myself (local)
1 s" G, r3 y5 x' Y  Eend
9 ^/ M: t, k, G8 e5 q& C$ M; K' @: ^6 B- w  ]: C5 U4 T3 l
to update-neighbor-total8 m# Q8 }; z- d, q3 v

: w: Y* ^' f1 M) G* w9 q$ _if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: H! q8 v) B3 T/ W
" w9 Y5 F) ~) N  s! X
+ |8 u8 h' ^$ H/ x9 m; v1 e3 D
end) C, D  x! {  Q, W5 I, V6 j& s7 [
3 k% T/ F9 z" k" N- f% k
to update-credibility-ijl # R0 v4 {- `6 i7 F; c; j

2 c3 |- ]: H( s" a3 u  [5 `3 k;;
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。; h* ]. q; C6 P8 x" Y4 C
let l 0
% x- u- a0 s+ _while[ l < people ]$ E# B) u. N0 A: f/ g
;;
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
7 j, z/ V. u% H9 G( C[
6 t6 ?- |# l- Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" x% R0 l, `: ^* b& H! P
if (trade-record-one-j-l-len > 3)  ~2 B( ~7 l: h/ a# N; }) 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-one
8 R: l1 G3 r8 E" \/ j5 z& Zlet i 3+ ?' \. x: e- T$ H- H" X( o5 W1 L
let sum-time 0
7 @% n+ S# \) Q4 x# f' kwhile[i < trade-record-one-len]0 v0 ^0 x3 O. V6 ?4 F
[
9 G( C2 j- U) d% O  Gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- A' p/ n5 M& T, c' `+ Z! u: Qset i4 d  r5 m* F' m0 X1 t% p
( i + 1)

- F" Y1 [0 W' B& z]6 a5 Z5 ^8 j7 N- P' O; a
let credibility-i-j-l 06 R5 J% O9 }( \/ P3 z' b) P" \7 Q
;;i
评价(jjl的评价)3 v3 p$ A+ w6 r2 |3 I
let j 33 T- K$ ?/ n' Z3 @- C
let k 4
. U2 `. ~. i) P/ R! z0 Mwhile[j < trade-record-one-len]
. g% a) s9 x6 K" S; j( F+ ~[" k! L3 _: |4 D1 X1 ~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
: R, E* w9 x/ [  V/ yset 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)- \/ K; e0 f/ s* ^; V, ~9 e
set j5 q  \: c& j4 |2 z, B) u5 H
( j + 1)

7 n2 k; h; ~8 k2 j2 r]
6 }& Z% Z7 M" K9 {$ wset [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 )). p6 ?/ D- I# C+ C

6 ?$ L) F: J# @. [
4 b9 x% a* i" x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  Y, r0 o% z5 ]2 N;;
及时更新il的评价质量的评价" w& o# f5 e/ z. J% |& V0 I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( l% x* T2 `1 T4 V+ \- a8 W6 c. S
set l (l + 1)
/ }0 j" u4 V4 V/ ^1 O]
) T" ~! ?9 y. r4 A( V& bend( q; a' B- k6 W/ ^  m, z" X
" X; }* Q- g7 V0 ~
to update-credibility-list  y$ C8 `2 ^  t# F2 `$ o' U  B( F
let i 0
6 ^# v" I: l3 wwhile[i < people]
5 l- V5 n4 G1 Q, x3 x  v4 J[
# j6 ?( g# v: Q- v6 olet j 0
( j) K1 ^1 u" C. k# ~9 e% a3 f  glet note 0
* b- `1 b) `2 B. W. R: `let k 0
/ c3 d/ ^. D$ G/ Q% H( p% H2 B;;
计作出过评价的邻居节点的数目" z$ e$ n0 J0 A/ J4 |9 Y, d
while[j < people]$ S0 u+ X5 ~1 f. b. F9 G
[
* G, f* u$ K3 eif (item j( [credibility] of turtle (i + 1)) != -1)
: N0 L1 X& ^& R/ A;;
判断是否给本turtle的评价质量做出过评价的节点
5 b, ~5 y( `  I9 ?[set note (note + item j ([credibility]of turtle (i + 1)))
( e0 z2 T! t3 y! R+ }- D4 Z;;*(exp (-(people - 2)))/(people - 2))]

# X9 h* n0 D4 a( ]1 _2 nset k (k + 1)# r1 }% \6 U* O
]. g6 X  u, U3 m8 S. U
set j (j + 1): ]. l5 N( i4 z7 V9 u; L4 d7 T& }
]3 [% n9 Y) N; e' `7 ?4 f. T
set note (note *(exp (- (1 / k)))/ k)/ ^4 Q6 m0 ]' [! E' B8 G
set credibility-list (replace-item i credibility-list note)
! a0 m; c, y" v# tset i (i + 1)
9 Y0 I, R$ o4 r8 u]( N6 V# D7 y3 V$ @# A
end7 A% q3 x6 q3 H+ t. Y" L
: a/ H2 c( l$ B
to update-global-reputation-list
$ b: Y4 F6 L  v6 vlet j 0
/ N- C$ R% o% X/ c9 ?1 w( @while[j < people]
( l% f/ n( U/ P  H! `[
5 {) R! }: {" Y4 A2 g3 c1 ?let new 0
: ~! x1 c) A) T5 r5 d1 X% h7 J;;
暂存新的一个全局声誉/ D( X& _3 V" y1 ~' O
let i 0
( S2 d% Z1 _$ q$ v# M2 _$ Flet sum-money 00 d8 S4 I. Y1 f$ F) B) F
let credibility-money 0% j4 D$ T( d" N& p
while [i < people]
. T; r/ O# D! ][, p) m5 q  b6 N" U2 o& H7 n* O& y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). O* T. S2 I4 Z* p8 _3 ~2 ^+ k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 s6 n4 ]- S1 p5 t  s$ r( pset i (i + 1)2 Y# T5 k$ u2 }) i% H! x8 r5 F
]+ j9 p6 N; u0 G' w( D- Q
let k 0
3 e' C5 |. G  `* t" p& r& z5 ilet new1 0
% A+ u- z: q& X; @7 [while [k < people]: z% o2 w) s+ O- I# `3 j- u
[3 |" K/ [# S/ T
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)
; C, q  X* O% rset k (k + 1)
9 {! H1 ?) u% l" f]) B% L& ]- N; d/ a, [8 R* w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & e6 |8 [5 I: p2 I  F) ^2 e, |
set global-reputation-list (replace-item j global-reputation-list new)
5 @2 P% X) z2 g  J4 mset j (j + 1)
3 W8 `* r0 u3 W0 K: y]
4 o. t; k4 y3 E9 e) Hend
: k/ u0 S) g" _3 N  {2 U- b
3 d5 t- G9 r) m; [1 q1 @
; F/ K2 y; j! W7 N2 [
1 S( t7 C7 k/ @7 R0 L) nto get-color
: o0 ?" ?6 {9 Z$ U$ a# E6 G! a$ v
* W" D8 M( x1 p# sset color blue

2 L$ Q1 O* G( w/ e* x0 `end# \2 ~  X( @6 W7 T

$ v" b4 T) L8 tto poll-class+ F3 H' T# C- p# v; D7 q
end, A, H% J. M* v9 ~3 j$ Z
4 e0 Z' {' m  X$ E5 e* l1 U- ~
to setup-plot18 q9 ?9 n) k- [! H" e2 {* c
8 J$ C* ?' `9 B* g$ v$ @* ~* p
set-current-plot "Trends-of-Local-reputation"
8 q) w, e- i) E! ?0 G4 H
8 i/ X* |9 t6 I
set-plot-x-range 0 xmax

, t6 g# L0 D$ a( a2 N, o$ i3 G4 ^" B/ h) T4 r! u' {/ e
set-plot-y-range 0.0 ymax
: v0 C* v1 _3 H4 M6 `
end% c, {% y) R3 p
. A% F8 \0 B. C! `" P% m+ M
to setup-plot2
% W" Y% G, |3 S. _* O  ?' x/ h7 l1 o+ y# d1 ^9 s( ~7 d
set-current-plot "Trends-of-global-reputation"
( E$ k( R; D0 L" {' e/ g7 n
$ {, h2 Z" G( H1 Q" ~
set-plot-x-range 0 xmax

7 l9 V( o5 H: X' |& q( a) C( i: K- P7 d; @' Q" X2 k
set-plot-y-range 0.0 ymax
" w, e; ^+ q5 q% e! k
end
% ~# G7 b3 ?: w. N5 F; z, n( T/ U8 H) G- f9 {# O6 @7 e0 ?
to setup-plot3; y) L3 f3 Z6 x8 ^( B8 m2 r. a

7 b2 ?& d. x3 Bset-current-plot "Trends-of-credibility"

: I5 e" g; s1 }- R. n- p
& V& N) \! Z' r% [9 eset-plot-x-range 0 xmax

5 f4 Z: ]: ^/ p9 h& D; l8 P+ n% y  \  |
set-plot-y-range 0.0 ymax
" n, J, v& W- ]* Q3 U6 F, {
end- V+ i" L/ n. d1 U/ I: w
+ i" W) N2 E2 ^5 S4 [' y& b
to do-plots
; [: |* x8 Y+ x" X) d; V; Gset-current-plot "Trends-of-Local-reputation"
2 E' m4 o6 P+ h0 wset-current-plot-pen "Honest service"
9 ^7 B( a) s0 bend
- }  ~1 X  h8 l" v+ r
. l; {7 j0 F+ l' x: u$ ?[ 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.7 O; J. n# L5 Q$ K; k4 C
0 T  Q/ J- C' q! f1 O1 L2 S  O
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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